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Document And Entity Information - USD ($)	12 Months Ended
Document And Entity Information - USD ($)	Dec. 31, 2018	Apr. 08, 2019	Jun. 30, 2018
Document Information [Line Items]
Entity Registrant Name	CORETEC GROUP INC.
Entity Central Index Key	0001375195
Trading Symbol	crtg
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Common Stock, Shares Outstanding (in shares)		68,673,537
Entity Public Float			$ 4,317,152
Entity Shell Company	false
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Amendment Flag	false

Consolidated Balance Sheets - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash	$ 4,001	$ 470,630
Prepaid expenses	37,237	35,358
Total current assets	41,238	505,988
Property and equipment, net	882	1,638
Other assets:
Patents, net	1,219,484	1,299,714
Goodwill	166,000	166,000
Deposits-other	2,315	2,315
Total other assets	1,387,799	1,468,029
Total Assets	1,429,919	1,975,655
Current liabilities:
Notes payable - related party	1,702,300	1,262,434
Notes and debentures payable	94,764	110,788
Accounts payable and accrued expenses	597,843	755,481
Accrued interest payable - related party	468,260	258,815
Accrued interest payable	26,051	22,984
Total current liabilities	2,889,218	2,410,502
Long term debt:
Notes payable - related party, net of current portion and discount		124,422
Total Liabilities	2,889,218	2,534,924
Stockholders' deficiency:
Preferred stock, Series A convertible, $0.0002 par value, 500,000 shares authorized; 345,000 shares issued and outstanding at December 31, 2018 and 2017	69	69
Common stock $0.0002 par value, 1,500,000,000 shares authorized; 68,474,520 and 66,785,428 shares issued and outstanding at December 31, 2018 and December 31, 2017, respectively	13,695	13,357
Additional paid-in capital	2,166,745	2,020,642
Accumulated deficit	(3,639,808)	(2,593,337)
Total Stockholders' Deficiency	(1,459,299)	(559,269)
Total Liabilities and Stockholders' Deficiency	$ 1,429,919	$ 1,975,655

Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Preferred stock, par value (in dollars per share)	$ 0.0002	$ 0.0002
Preferred stock, shares authorized (in shares)	500,000	500,000
Preferred stock, shares issued (in shares)	345,000	345,000
Preferred stock, shares outstanding (in shares)	345,000	345,000
Common stock, par value (in dollars per share)	$ 0.0002	$ 0.0002
Common stock, shares authorized (in shares)	1,500,000,000	1,500,000,000
Common stock, shares issued (in shares)	68,474,520	66,785,428
Common stock, shares outstanding (in shares)	68,474,520	66,785,428

Consolidated Statements of Operations - USD ($)	12 Months Ended
Consolidated Statements of Operations - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Income:
Revenue
Expenses:
Research and development	85,066	456,360
General and administrative	751,251	936,780
Interest	394,943	320,093
Total expenses	1,231,260	1,713,233
Gain on settlement of accounts payable	184,789
Net loss	$ (1,046,471)	$ (1,713,233)
Loss per share:
Basic and diluted (in dollars per share)	$ (0.015)	$ (0.067)
Weighted average shares outstanding, basic and diluted (in shares)	67,909,853	25,461,630

Consolidated Statements of Changes in Stockholders' Equity Deficiency - USD ($)	Preferred Stock [Member] Series A Preferred Stock [Member]	Preferred Stock [Member] Series B Preferred Stock [Member]	Preferred Stock [Member] Preferred Class B [Member]	Common Stock [Member] Series A Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2016	345,000	6,558,345	1,312		4,943,187
Balance at Dec. 31, 2016	$ 69				$ 989	$ 881,698	$ (880,104)	$ 3,964
Recognition of beneficial conversion feature						350,000		350,000
Convertible securities converted to common stock (in shares)		(6,558,345)	(1,312)		41,842,241
Convertible securities converted to common stock					$ 8,368	(7,056)
Stock and options issued for cash (in shares)					20,000,000
Stock and options issued for cash					$ 4,000	746,000		750,000
Options issued to purchase common stock						50,000		50,000
Net loss							(1,713,233)	(1,713,233)
Balance (in shares) at Dec. 31, 2017	345,000				66,785,428
Balance at Dec. 31, 2017	$ 69				$ 13,357	2,020,642	(2,593,337)	(559,269)
Convertible securities converted to common stock (in shares)				166,667	641,253
Convertible securities converted to common stock					$ 128	322		450
Net loss							(1,046,471)	(1,046,471)
Warrants exercised						49,106		49,106
Common stock issued for liabilities (in shares)					552,924
Common stock issued for liabilities					$ 111	71,768		71,879
Common stock issued for services (in shares)					494,915
Common stock issued for services					$ 99	24,907		25,006
Balance (in shares) at Dec. 31, 2018	345,000				68,474,520
Balance at Dec. 31, 2018	$ 69				$ 13,695	$ 2,166,745	$ (3,639,808)	$ (1,459,299)

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
Consolidated Statements of Cash Flows - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Cash Flows from Operating Activities
Net loss	$ (1,046,471)	$ (1,713,233)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	756	1,002
Amortization - intangible assets	80,230	93,007
Amortization - debt discount	180,444	124,422
Common stock issued for services	25,006
Options issued for common stock		50,000
Gain on settlement of accounts payable	(184,789)
Loss on sale of property and equipment		3,259
Change in:
Prepaid expenses	(1,879)	9,496
Accounts payable and accrued liabilities	311,542	597,213
Net cash used in operating activities	(635,161)	(834,834)
Cash Flows from Investing Activities
Purchase of property and equipment		(2,268)
Proceeds from sale of property and equipment		2,500
Net cash provided by investing activities		232
Cash Flows from Financing Activities
Payments on insurance premium financing	(39,088)	(42,023)
Proceeds from note payable - related party	183,854	596,661
Proceeds from exercise of warrants	23,766
Proceeds from options and common stock issued		750,000
Net cash provided by financing activities	168,532	1,304,638
Net change in cash	(466,629)	470,036
Cash, beginning of period	470,630	594
Cash, end of period	4,001	470,630
Supplement Disclosure of Cash flow Information
Cash paid during the year for interest	1,967	2,797
Non-Cash Investing Activities
Series B Preferred shares converted to common shares		1,312
Debentures converted to common stock	25,790
Common stock issued for liabilities	$ 71,879

Note 1 - Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Business Description and Basis of Presentation [Text Block]

Note

– Summary of Significant Accounting Policies

Nature of Business

The Coretec Group Inc. (the “Group”) (formerly

3DIcon

Corporation) (

“3DIcon”

) was incorporated on

August 11, 1995,

under the laws of the State of Oklahoma as First Keating Corporation. The articles of incorporation were amended

August 1, 2003

to change the name to

3DIcon

Corporation. During

2001,

First Keating Corporation began to focus on the development of

360

-degree holographic technology. From

January 1, 2001,

3DIcon’s

primary activity has been the raising of capital in order to pursue its goal of becoming a significant participant in the development, commercialization and marketing of next generation

display technologies.

Coretec Industries, LLC (“Coretec”), a wholly owned subsidiary of the Group (collectively the “Company”), was organized on

June 2, 2015

in the state of North Dakota. Coretec is currently developing, testing, and providing new and/or improved technologies, products, and service solutions for energy-related industries including, but

not

limited to oil/gas, renewable energy, and distributed energy industries. Many of these technologies and products also have application for medical, electronic, photonic, display, and lighting markets among others. Early adoption of these technologies and products is anticipated in markets for energy storage (Li-ion batteries), renewable energy (BIPV), and electronics (Asset Monitoring).

Reverse Acquisition

May 31, 2016,

the Group entered into a Share Exchange Agreement (the “Share Exchange Agreement”) with Coretec and

four

Coretec members (the “Members”), which Members held all outstanding membership interests in Coretec. On

September 30, 2016 (

the “Closing Date”), the Group closed the transaction contemplated by the Share Exchange Agreement. Pursuant to the Share Exchange Agreement, the Members agreed to sell all their membership interests in Coretec to the Group in exchange for the Group’s issuance of an aggregate

4,760,872

shares of the Group’s Series B Convertible Preferred Stock to the Members (the “Exchange”). Coretec became a wholly-owned subsidiary of the Group and the former Members beneficially owned approximately

65%

of the Group’s common stock on a fully-diluted basis on the Closing Date. Upon the closing of the Share Exchange Agreement,

two

of the Group’s Directors resigned and

three

new Directors associated with Coretec were nominated and elected, giving control of the board of directors to former Coretec Members. The

65%

holders of the Group common stock were unable to sell that stock for a period of

one

year under the terms of a lock-up agreement reached between the parties. Victor Keen, the largest shareholder of the Group prior to the reverse acquisition, was also a participant in the lock-up agreement.

Authorization of Name Change

February 21, 2017,

the Board unanimously approved the proposal to seek stockholder approval and authorization to amend the

3DIcon

Certificate of Incorporation to change the name of

3DIcon

to “The Coretec Group Inc.” (the “Name Change”) and thereafter change its trading symbol to a trading symbol resembling the name of the Group following the Name Change. On

February 21, 2017,

a majority of the Group’s stockholders adopted resolutions by written consent authorizing the Board to undertake the Name Change. This Name Change became effective

June 28, 2017

upon the Group’s filing of the Name Change Amendment with the Secretary of State of the State of Oklahoma.

Authorization of Reverse Stock Split

February 21, 2017 (

the “Record Date”), the Board of Directors unanimously approved, and a majority of the Company’s stockholders, as of the Record Date, approved by written consent pursuant to Section

1073

of the Oklahoma Act, to permit the Company’s Board of Directors, in its sole discretion, to effectuate

one

or more consolidations of the issued and outstanding shares of common stock at some future date

later than the

first

anniversary of the Record Date, pursuant to which the shares of common stock would be combined and reclassified into

one

validly issued fully paid and non-assessable share of common stock at a ratio (the “Reverse Split Ratio”) within the range of

-for-

and up to

-for-

300

(the “Reverse Split Range”), with each stockholder otherwise entitled to receive a fractional share of common stock as a result of the Reverse Stock Split. Effective

June 28, 2017,

a Reverse Stock Split pursuant to the maximum stated Reverse Split Ratio, each

300

shares of our issued and outstanding common stock was automatically converted into

share of common stock.

Basis of Presentation

Under accounting principles generally accepted in the United States of America (“U.S. GAAP”), the acquisition is treated as a “reverse acquisition” under the purchase method of accounting. The consolidated statements of operations herein reflect the historical results of Coretec prior to the completion of the reverse acquisition since it was determined to be the accounting acquirer, and do

not

include the historical results of operations for

3DIcon

prior to the completion of the acquisition.

3DIcon’s

assets and liabilities were consolidated with the assets and liabilities of Coretec as of the

September 30, 2016

consummation of the acquisition.

Principles of Consolidation

The consolidated balance sheets as of

December 31, 2018

and

2017

and the consolidated statements of operations and cash flows for the years ended

December 31, 2018

and

2017

include the accounts of the Group and its wholly owned subsidiary, Coretec. Intercompany transactions and balances have been eliminated in consolidation.

Use of Estimates

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses and the disclosure of contingent assets and liabilities. Actual results could differ from the estimates and assumptions used.

Property and Equipment

Property and equipment are recorded at cost. Depreciation is recorded over the estimated useful lives using the straight-line method. Maintenance and repairs are expensed as incurred; major improvements and betterments are capitalized.

Estimated useful lives of property and equipment are as follows for the major classes of assets:

Asset Description		Estimated Lives (years)
Furniture and fixtures			7

Intangible Assets

Intangible assets consist primarily of acquired patents. The Company acquired

$1,400,000

of intangible assets in conjunction with the reverse acquisition discussed in Note

Intangible assets with finite lives are amortized on a straight-line basis over their useful lives.

Goodwill

Goodwill was acquired with the reverse acquisition discussed in Note

The Company evaluates the carrying value of goodwill on an annual basis and between annual evaluations if events occur or circumstances change that would more likely than

not

reduce the fair value of goodwill below its carrying amount. When assessing whether goodwill is impaired, management considers

first

a qualitative approach to evaluate whether it is more likely than

not

the fair value of the goodwill is below its carrying amount; if so, management considers a quantitative approach by analyzing changes in performance and market-based metrics as compared to those used at the time of the initial acquisition. For the periods presented,

impairment charges were recognized.

Long-Lived Assets

Long-lived assets, such as property and equipment and intangible assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset

may

not

be recoverable. If circumstances require a long-lived asset or asset group be tested for possible impairment, the Company

first

compares undiscounted cash flows expected to be generated by that asset or asset group to its carrying value. If the carrying value of the long-lived asset or asset group is

not

recoverable on an undiscounted cash flow basis, impairment is recognized to the extent that the carrying value exceeds its fair value. Fair value is determined through various valuation techniques including discounted cash flow models, quoted market values and

third

-party independent appraisals, as considered necessary.

Fair Value of Financial Instruments

The following methods and assumptions were used to estimate the fair value of each class of financial instrument held by the Company:

Current assets and current liabilities

- The carrying value approximates fair value due to the short maturity of these items.

Notes payable

- The fair value of the Company's notes payable has been estimated by the Company based upon the liability's characteristics, including interest rate. The carrying value approximates fair value.

Basic and Diluted Loss Per Common Share

Basic loss per common share is computed by dividing net loss by the weighted average number of vested common shares outstanding during the period. Diluted earnings per share reflects the potential dilution that could occur if securities or other instruments to issue common stock were exercised or converted into common stock. The following securities are excluded from the calculation of weighted average dilutive common shares because their inclusion would have been anti-dilutive:

	December 31,
	201 8		201 7
Options		216,557		2,950,262
Warrants		1,061		32,728
Series A convertible preferred stock		115,000		115,000
Convertible debentures		289,804,783		84,103,256
Total potentially dilutive shares		290,137,401		87,201,246

Research and Development

Research and development costs are expensed as incurred. Research and development costs amounted to approximately

$85,000

and

$456,000

for the years ended

December 31, 2018

and

2017,

respectively.

Income Taxes

The Company accounts for income taxes under an asset and liability approach that requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in the Company’s consolidated financial statements or tax returns. In estimating future tax consequences, the Company generally considers all expected future events other than enactments of changes in tax laws or rates. The effect on deferred tax assets and liabilities of a change in tax rates will be recognized as income or expense in the period that includes the enactment date. A valuation allowance is established when necessary to reduce deferred tax assets to the amount expected to be realized.

The Company’s tax benefits are fully offset by a valuation allowance due to the uncertainty that the deferred tax assets would be realized. Management considers the likelihood of changes by taxing authorities in its filed income tax returns and recognizes a liability for or discloses potential changes that management believes are more likely than

not

to occur upon examination by tax authorities. Management has

not

identified any uncertain tax positions in filed income tax returns that require recognition or disclosure in the accompanying consolidated financial statements.

Recent Accounting Pronouncements

The following is a summary of recent accounting pronouncements that are relevant to the Company:

January 2016,

the FASB issued ASU

No.

2016

01,

Financial Instruments – Overall (Subtopic

825

): Recognition and Measurement of Financial Assets and Financial Liabilities

(“ASU

2016

01”

). ASU

2016

addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments, specifically equity investments and financial instruments measured at amortized cost. ASU

2016

is effective for public companies for annual and interim periods beginning after

December 15, 2017.

ASU

2016

did

not

have a material impact on the Company’s financial statements.

August 2016,

the FASB issued ASU

No.

2016

15,

Statement of Cash Flows (Topic

230

): Classification of Certain Cash Receipts and Cash Payments

(“ASU

2016

15”

). ASU

2016

will make

eight

targeted changes to how cash receipts and cash payments are presented and classified in the statement of cash flows. ASU

2016

is effective for public companies for interim and annual periods beginning after

December 15, 2017.

ASU

2016

did

not

have a material impact on the Company’s cash flows.

February 2016,

the FASB issued accounting standards update (ASU)

No.

2016

02,

Leases (Topic

842

)

intended to increase transparency and comparability among companies by requiring most leases to be included on the balance sheet and by expanding disclosure requirements. This is effective for public business entities for fiscal years beginning after

December 15, 2018,

including interim periods within those fiscal years. The Company determined the ASU will

not

have a material impact to the consolidated financial statements as the Company only has

one

lease that is operating month to month.

The FASB has issued ASU

2014

09,

Revenue from Contracts with Customers

. This ASU supersedes the revenue recognition requirements in FASB ASC

605

- Revenue Recognition and most industry-specific guidance throughout the Codification. The standard requires that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. On

July 9, 2015,

the FASB deferred the effective date of ASU

No.

2014

from annual periods beginning after

December 15, 2016

to annual periods beginning after

December 15, 2017.

The adoption of this standard did

not

have a material impact on the Company’s consolidated financial position and results of operations because the Company currently has

revenue.

January 2017,

the FASB issued ASU

2017

01,

Business Combinations (Topic

805

): Clarifying the Definition of a Business

. This ASU provides a screen to determine when a set is

not

a business. The screen requires that when substantially all of the fair value of gross assets acquired (or disposed of) is concentrated in a single identifiable asset or a group of similar identifiable assets, the set is

not

a business. The amendments in this ASU are effective beginning after

December 15, 2017,

including interim periods within those periods and should be applied prospectively. The adoption of this standard did

not

have a material impact on the Company’s consolidated financial position and results of operations.

January 2017,

the FASB issued ASU

2017

04,

Intangibles – Goodwill and Other (Topic

350

): Simplifying the Test for Goodwill Impairment

. This ASU simplifies the subsequent measurement of goodwill by eliminating Step

from the goodwill test. Under Step

an entity had to perform procedures to determine the fair value at the impairment testing date of its assets and labilities following the procedure that would be required in determining the fair value of assets acquired and labilities assumed in a business combination. Instead, an entity should perform its annual, or intern, goodwill impairment test by comparing the fair value of a reporting unity with its carrying amount. The amendments in this ASU are effective beginning after

December 15, 2019,

however early adoption is permitted beginning

January 1, 2017

and should be applied on a prospective basis. The Company does

not

anticipate that the adoption of this standard will have a material impact on its consolidated financial position and results of operations.

Uncertainties

The Company has realized a cumulative net loss of

$3,639,808

for the period from inception (

June 2, 2015)

December 31, 2018,

negative working capital of

2,847,980,

and

revenues. These conditions raise substantial doubt about the Company’s ability to continue as a going concern for a year following the issuance of these consolidated financial statements. The Company has insufficient revenue and capital commitments to fund the development of its planned products and to pay operating expenses.

The ability of the Company to continue as a going concern depends on the successful completion of the Company's capital raising efforts to fund the development of its planned products. The Company intends to continue to raise additional capital through debt and equity financings. There is

assurance that these funds will be sufficient to enable the Company to fully complete its development activities or attain profitable operations. If the Company is unable to obtain such additional financing on a timely basis or, notwithstanding any request the Company

may

make, the Company’s debt holders do

not

agree to convert their notes into equity or extend the maturity dates of their notes, the Company

may

have to curtail its development, marketing and promotional activities, which would have a material adverse effect on the Company’s business, financial condition and results of operations, and ultimately the Company could be forced to discontinue its operations and liquidate.

The accompanying consolidated financial statements have been prepared in conformity with U.S. GAAP, which contemplates the continuation of the Company as a going concern and the realization of assets and satisfaction of liabilities in the normal course of business. The carrying amounts of assets and liabilities presented in the consolidated financial statements do

not

necessarily purport to represent realizable or settlement values. The consolidated financial statements do

not

include any adjustments that might result from the outcome of this uncertainty.

Under the terms of the Golden State Equity Investors, Inc (“Golden State”)

4.75%

Convertible Debenture due on

December 31, 2018,

subsequently extended to

June 30, 2019,

Golden State is obligated to submit conversion notices in an amount such that Golden State receives

of the outstanding shares of the Company every calendar quarter for a period of

one

year. In connection with each conversion, Golden State is expected to simultaneously exercise a percentage of warrants equal to the percentage of the principal being converted. The warrants are exercisable at

$114,450

per share. The number of warrants exercisable is subject to certain beneficial ownership limitations contained in the

4.75%

Convertible Debenture (“the Beneficial Ownership Limitations”). The Beneficial Ownership Limitations prevent Golden State from converting on the

4.75%

Convertible Debenture or exercising warrants if such conversion or exercise would cause Golden State’s holdings to exceed

9.99%

of the Company’s issued and outstanding common stock. Subject to the Beneficial Ownership Limitations and provided that Golden State is able to sell the shares under Rule

144,

Golden State is required to convert

$28.60

of the

4.75%

Convertible Debenture and exercise

2.86

warrants per month. Based upon the current stock price, the issued and outstanding shares as of

December 31, 2018

and ignoring the impact of the Beneficial Ownership Limitations, the Company

may

receive up to

$327,000

per month in funding for the duration of the debenture from Golden State as a result of warrant exercises. Due to the Beneficial Ownership Limitations, Golden State did

not

provide funding in the year ended

December 31, 2017

and only

$23,766

2018.

Note 2 - Property and Equipment

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Property, Plant and Equipment Disclosure [Text Block]

Note

– Property and Equipment

Property and equipment consist of the following:

	December 31,			December 31,
	201 8			201 7
Furniture and fixtures	$	13,286		$	13,286
Less: Accumulated depreciation		(12,404	)		(11,648	)
Totals	$	882		$	1,638

Depreciation expense amounted to

$756

and

$1,002

for the years ended

December 31, 2018

and

2017,

respectively.

Note 3 - Patents

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Intangible Assets Disclosure [Text Block]

Note

– Patents

The following table sets forth patents:

	December 31, 201 8							December 31, 201 7
	Gross							Gross							Useful
	Carrying		Accumulated			Net Book		Carrying		Accumulated			Net Book		Life
	Amount		Amortization			Value		Amount		Amortization			Value		In Years

Patents	$	1,400,000	$	(180,516	)	$	1,219,484	$	1,400,000	$	(100,286	)	$	1,299,714		17.45

The patents were acquired with the

September 30, 2016

reverse acquisition. Amortization expense for the next

five

fiscal years and thereafter is expected to be approximately

$80,000

annually through the year ended

December 31, 2034.

Note 4 - Debentures and Notes Payable

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Debt Disclosure [Text Block]

Note

– Debentures and Notes Payable

Debentures and notes payable consists of the following:

	December 31,			December 31,
	201 8			201 7
Notes and debentures payable:
6.05% Insurance premium finance agreement due July 2019	$	31,089		$	-
5.25% Insurance premium finance agreement, due June 2018		-			21,323
9% Promissory note due June 2018		-			25,341
4.75% Convertible debenture due June 2019		63,675			64,124
Total notes and debentures payable	$	94,764		$	110,788

Notes payable - related party:
14% Term loan due June 2019	$	374,993		$	264,993
14% Term loan due June 2019		621,500			596,500
14% Term loan due June 2019		400,941			400,941
7% Convertible promissory note due June 2019, net		228,627			98,187
7% Convertible promissory note due June 2019, net		76,239			26,235
Total notes payable - related party		1,702,300			1,386,856
Less current maturities		(1,702,300	)		(1,262,434	)
Long-term debt	$	-		$	124,422

6.05%

Insurance premium finance agreement, due

July 2019

The Company entered into an insurance financing agreement in

2018

totaling

$48,855

due

July 2019

and made payments of

$17,766

during the year ended

December 31, 2018.

5.25%

Insurance premium finance agreement, due

June 2018

The Company entered into an insurance financing agreement in

2017

totaling

$37,711

due

June 2018

and made payments of

$21,323

during the year ended

December 31, 2018.

Promissory note due

June 2018

April 26, 2016,

the Company signed a

promissory note with Golden State in the amount of

$40,000.

Golden State advanced the

$40,000

on the note and, on

June 16, 2016,

applied

$14,659

to fund the exercise of warrants under the terms of the

4.75%

convertible debenture (described below) held by Golden State, leaving

$25,341

outstanding on the

promissory note as of

December 31, 2017.

During the year ended

December 31, 2018,

Golden State applied

$25,341

to fund the exercise of warrants under the terms of the

4.75%

convertible debenture.

4.75%

Convertible debenture due

June 2019

November 3, 2006,

the Company issued to Golden State a

4.75%

convertible debenture in a principal amount of

$100,000,

due

December 31, 2014,

subsequently extended to

December 31, 2018

and most recently extended to

June 30, 2019

and warrants to buy

post-split equivalent shares of common stock at a post-split exercise price of

$114,450

per share. In connection with each conversion, Golden State is expected to simultaneously exercise a percentage of warrants equal to the percentage of the principal being converted. On

January 8, 2018,

Golden State converted

$225

of the

4.75%

convertible debenture into

244,618

shares of common stock at

$0.0009

per share and exercised

0.2143

warrants at

$114,450

per share for

$24,525.

May 24, 2018,

Golden State converted

$225

of the

4.75%

convertible debenture into

396,635

shares of common stock at

$0.0006

per share and exercised

0.2143

warrants at

$114,450

per share and advanced

$23,766

cash for the exercise.

The conversion price for the

4.75%

$100,000

convertible debenture is the lesser of (i)

$1,200

or (ii)

80%

of the average of the

five

lowest volume weighted average prices (“VWAP”) during the

twenty

(

) trading days prior to the conversion. If Golden State elects to convert a portion of the debenture and, on the day that the election is made, the volume weighted average post-split price is below

$210,

the Company shall have the right to prepay that portion of the debenture that Golden State elected to convert, plus any accrued and unpaid interest, at

135%

of such amount.

14%

Term loan due

June 2019,

related party

April 18, 2016,

the Company entered into an unsecured loan agreement whereby Carlton James North Dakota Limited ("CJNDL”) agreed to provide the Company a loan facility of up to

$100,000.

Under the terms of the agreement, the Company shall pay interest on the outstanding unpaid balance at the rate of

1.167%

per month. The interest is due quarterly, and the principal is due

June 29, 2019.

CJNDL has advanced

$374,993

(

$274,993

in excess of the facility) on the loan as of

December 31, 2018.

During

2017,

CJNDL agreed that the excess amount funded to date and any future funding under the loan will be done on the same terms and conditions as the original note.

14%

Term loan due

June 2019,

related party

February 24, 2016,

the Company entered into an unsecured loan agreement whereby Victor Keen, Co-Chairman of the Company (“Keen”) agreed to provide the Company a loan facility of up to

$300,000.

Under the terms of the agreement, the Company shall pay interest on the outstanding unpaid balance at the rate of

1.167%

per month. The interest is due quarterly, and the principal is due

June 29, 2019.

Keen has advanced

$621,500

(

$301,000

in excess of the facility) on the loan through

December 31, 2018.

During

2017,

Keen agreed that the excess amount funded to date and any future funding under the loan will be done on the same terms and conditions as the original note.

14%

Term loan due

June 2019,

related party

June 1, 2015,

Coretec obtained a

$500,000

revolving note agreement with CJNDL. The total amount of borrowings by Coretec shall

not

exceed

$500,000.

Coretec accrues interest on the outstanding balance at the rate of

1.167%

per month, payable on a quarterly basis. CJNDL has advanced

$400,941

on the loan as of

December 31, 2018.

Outstanding borrowings are secured by substantially all assets of the Company. The note is due on

June 29, 2019.

Convertible promissory note due

June 2019

, related party

March 30, 2017,

the Company issued to Mr. Victor Keen, Co-Chairman of the Board of Directors, a

convertible promissory note in a principal amount of

$250,000,

due

March 1, 2019 (

“Maturity Date”), subsequently extended to

June 30, 2019.

The promissory note shall automatically convert into

eight

percent (

) of the fully diluted outstanding shares of common stock of the Company calculated after giving effect to (a) the exercise of all outstanding options, warrants or other rights to acquire shares of common stock of the Company, (b) the conversion of all outstanding convertible or exchangeable securities, and (c) after giving effect to the issuance of common stock upon conversion of this note (the “Conversion Shares”). The conversion shall

not

occur until both of the following

two

events shall have occurred (the “Conversion Event”): (i) the consummation of the Reverse Split by the Company as reflected in the Preliminary Information Statement filed with the Securities and Exchange Commission on

March 7, 2017,

and (ii) the conversion of all the Company’s issued and outstanding Series A Convertible Preferred Stock and Series B Convertible Preferred Stock into the Conversion Shares. The calculation amounts to a total of

6,413,108

common shares. If the Conversion Event has

not

occurred prior to the earlier to occur of the Maturity Date and the occurrence of an event of default, then this note shall

not

be automatically converted into the Conversion Shares and Mr. Victor Keen

may

elect, at his sole discretion, (i) to have the outstanding principal balance of this note converted into the Conversion Shares; or (ii) to declare the outstanding principal balance of this note, together with all accrued interest, be paid in accordance with the terms of the note. Such election

may

be made at any time on or following the Maturity Date or the occurrence of an event of default. This note is an unsecured obligation of the Company. The embedded conversion option was deemed to be a beneficial conversion feature because the active conversion price was less than the commitment date market price of the common stock. The dollar amount of the beneficial conversion feature is limited to the carrying value of the promissory note, so a

$250,000

debt discount was recorded, with a corresponding credit to additional paid-in capital for the beneficial conversion feature. The debt discount will be amortized over the life of the debt and

$130,440

and

$98,187

was amortized during the years ended

December 31, 2018

and

2017,

respectively.

Convertible promissory note due

June 2019,

related party

June 21, 2017,

the Company issued to Mr. Victor Keen, Co-Chairman of the Board of Directors, a

convertible promissory note in a principal amount of

$100,000,

due

June 21, 2019.

The promissory note shall automatically convert into

four

percent (

4,128,665

common shares. The conversion shall

not

occur until both of the following

two

March 7, 2017,

and (ii) the conversion of all of the Company’s issued and outstanding Series A Convertible Preferred Stock and Series B Convertible Preferred Stock into the Conversion Shares. If the Conversion Event has

not

occurred prior to the earlier to occur of the Maturity Date and the occurrence of an event of default, then this note shall

not

be automatically converted into the Conversion Shares and Mr. Victor Keen

may

$100,000

debt discount was recorded, with a corresponding credit to additional paid-in capital for the beneficial conversion feature. The debt discount will be amortized over the life of the debt and

$50,004

and

$26,235

was amortized during the year ended

December 31, 2018

and

2017,

respectively.

Note 5 - Commitments	12 Months Ended
Note 5 - Commitments	Dec. 31, 2018
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	Note 5 – Commitments Consulting Agreements On November 13, 2017, the Company hired Ramez Elgammal as Vice President of Technology. Mr. Elgammal will lead new business development and sales initiatives for the Company’s proprietary liquid silicon precursor, CHS. The one -year consulting agreement was effective as of November 15, 2017 and continued in full force and effect through November 14, 2018 whereupon the agreement was renewed on a month to month term. The Company paid Mr. Elgammal a fee of $58,063 for the year ended December 31, 2018. The Company entered into a one -year independent consulting agreement with Concordia Financial Group (“Concordia”) effective August 1, 2016, and month-to-month thereafter. Under the terms of the agreement, Concordia will provide business strategy services by assisting the Company by reviewing and evaluating the Company's plans, personnel, board composition, technology, development of business models, building financial models for projections, developing materials to describe the Company, developing capital sources and assisting and advising the Company in its financial negotiations with capital sources. Concordia also advises with respect to effective registration of offerings of Company securities, the management team, the Company's development of near and long-term budgets, marketing strategies and plans, and assists in presentations related to the above services. Concordia is paid an hourly fee of $185. The Company recognized expense of $54,483 and $66,555 during the years ended December 31, 2018 and 2017, respectively. North Dakota State University Sponsored Research Agreement The Company entered into a Sponsored Research Agreement (“SRA”) dated August 14, 2015 with North Dakota State University Research Foundation (“NDSU/RF”). With the proposed research for this project, NDSU/RF planned to make prototypical compounds and materials from CHS and CHS derivatives with the potential; 1 ) to act as efficient photoactive materials for solar cells, 2 ) to serve in electro active devices for optimization of current and voltage performance, 3 ) to perform at high levels of efficiency as silicon anodes in lightweight batteries (silicon has more than 11 times the capacity of carbon in the ubiquitous carbon based batteries), and, 4 ) to be incorporated into specialty inks for printed electronics applications. The research was conducted August 14, 2015 through August 31, 2016. The Company agreed to reimburse NDSU/RF for all costs incurred in performing the research up to a maximum amount of $70,000. On June 7, 2016 the Company and NDSU/RF mutually agreed to amend the SRA. Under the terms of the amendment the term was extended to June 30, 2017 and the consideration was increased by $120,000 to a maximum amount of $190,000. The Company recognized expense of $100,932 during the year ended December 31, 2017. As of December 31, 2018, the remaining balance of the SRA to be paid under the terms of the agreement is $93,578. As of December 31, 2018, and pursuant to the SRA, Coretec was in arrears on the payment of that obligation. Accordingly, as of December 31, 2018, Coretec would be considered in default under the SRA because of the unpaid obligations, which could allow NDSU/RF to exercise various options under the SRA, including an option to terminate the SRA if we do not cure the default within 10 business days after receiving written notice by NDSU/RF. Due to Coretec’s belief that certain obligations of NDSU/RF were unsatisfied, Coretec has actively communicated with NDSU/RF in order to determine what obligations are owed and what actions all parties are required to take, and will agree to take, in furtherance of the SRA. In connection with such objective, Coretec has sent NDSU/RF a detailed communication setting forth, among other things, the basis for its belief that (i) the payment obligation was not due to NDSU/RF; and (ii) NDSU/RF does not have the right to enforce a default. As of the date of this report, there have been no legal proceedings initiated in connection with the SRA. However, no assurances can be made that the active communications between the parties will result in a resolution or that legal proceedings will not be initiated in the future. Supply Agreement The Company is currently negotiating an agreement with Gelest Inc., a Pennsylvania corporation (“Gelest”) where Gelest will provide Cyclohexasilane (“CHS” or the “Products”) storage and handling, website and catalog listings of CHS produced by or for the Company for sale to its customers, and customer service, including trans-fill of customer cylinders.

Note 6 - Preferred Stock, Warrants and Options

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Stockholders' Equity Note Disclosure [Text Block]

Note

– Preferred Stock, Warrants and Options

The terms of the Series A Convertible Preferred Stock, Series B Convertible Preferred Stock, Warrants and Options are as follows:

Series A Convertible Preferred Stock

A total of

500,000

shares of Series A Convertible Preferred Stock (the “Series A Preferred Stock”) have been authorized for issuance under the Certificate of Designation of Preferences, Rights and Limitation of Series A Convertible Preferred Stock of the Company (the “Certificate of Designation”), which Certificate of Designation was filed with the Secretary of State of the State of Oklahoma on

December 11, 2013.

The shares of Series A Preferred Stock have a par value of

$0.0002

per share and a stated value of

$1.00

per share (the “Stated Value”) and shall receive a dividend of

of their Stated Value per annum payable or upon conversion or redemption of Series A Preferred at the option of the Corporation. We have

not

paid any cash or stock dividends to the holders of our Series A Preferred. As of

December 31, 2018,

dividends in arrears totaled approximately

$107,000.

Under the Certificate of Designation, the holders of the Series A Preferred Stock have the following rights, preferences and privileges:

The Series A Preferred Stock

may,

at the option of the Investor, be converted at any time after the

first

anniversary of the issuance of the Series A Preferred Stock or from time to time thereafter into

166,667

post-split shares of Common Stock that such investor is entitled to in proportion to the

500,000

shares of Series A Preferred so designated in the Certificate of Designation.

The Series A Preferred Stock will automatically be converted into Common Stock anytime the post-split

-day average VWAP of the Company’s Common Stock prior to such conversion is equal to

$15.00

or more. Such mandatory conversion would be converted by the same method described above for discretionary conversions.

Except as otherwise required by law, the holders of shares of Series A Preferred Stock shall

not

have voting rights or powers.

In the event of any (i) liquidation, dissolution or winding up of the Company, whether voluntary or involuntary, or ii) sale, merger, consolidation, reorganization or other transaction that results in a change of control of the Company, each holder of a share of Series A Preferred shall be entitled to receive, subject to prior preferences and other rights of any class or series of stock of the Company senior to the Series A Preferred, but prior and in preference to any distribution of any of the assets or surplus funds of the Company to holders of Common Stock, or any other class or series of stock of the Company junior to the Series A Preferred, an amount equal to the Stated Value plus accrued and unpaid dividends (as adjusted for any stock dividends, combinations or splits with respect to such shares) (the “Preference Amount”). After such payment has been made to the holders of Series A Preferred of the full Preference Amount to which such holders shall be entitled, the remaining net assets of the Company available for distribution, if any, shall be distributed pro rata among the holders of Common Stock. In the event the funds or assets legally available for distribution to the holders of Series A Preferred are insufficient to pay the Preference Amount, then all funds or assets available for distribution to the holders of capital stock shall be paid to the holders of Series A Preferred pro rata based on the full Preference Amount to which they are entitled.

The Company

may

not

declare, pay or set aside any dividends on shares of any class or series of capital stock of the Company (other than dividends on shares of Common Stock payable in shares of Common Stock) unless the holders of the Series A Preferred Stock shall

first

receive, or simultaneously receive, a dividend on each outstanding share of Series A Preferred in an amount equal to the dividend per share that such holders would have received had they converted their shares of Series A Preferred into shares of Common Stock immediately prior to the record date for the declaration of the Common Stock dividend in an amount equal to the average VWAP during the

trading days prior to the date such dividend is due.

Series A Warrants

Each Unit under the Securities Purchase Agreement consists of warrants entitling the investor to purchase

fifty

(

) pre-split shares of Common Stock for each share of Series A Preferred purchased by such investor in the Private Placement, at an initial pre-split exercise price per share of

$0.0055.

The exercise price and number of shares of Common Stock issuable under the warrants are subject to adjustments for stock dividends, splits, combinations and similar events. On or after the

first

anniversary of the issuance of the warrants and prior to close of business on the

fourth

anniversary of the issuance of the warrants, the warrants

may

be exercised at any time upon the election of the holder, provided however, that an investor

may

at any given time convert only up to that number of shares of Common Stock so that, upon conversion, the aggregate beneficial ownership of the Company’s Common Stock (calculated pursuant to Rule

13d

of the Securities Exchange Act of

1934,

as amended) of such investor and all persons affiliated with such investor, is

not

more than

4.99%

of the Company’s Common Stock then outstanding (subject to adjustment up to

9.99%

at the investor’s discretion upon

days’ prior notice). The Series A Warrants expired in

November 2017

and

January 2018,

four

years from date of issuance.

Series B Convertible Preferred Stock

March 22, 2016,

the Company filed with the Secretary of State of the State of Oklahoma a Certificate of Designation (the “Certificate of Designation”), setting for the Preferences, Rights and Limitation of the Company’s Series B Convertible Preferred Stock (the “Series B Preferred”). The Two Million (

2,000,000

) shares of Series B Preferred designated under the Certificate of Designation have a stated value of

$1.00

per share (the “Stated Value”). Under the Certificate of Designation, the holders of the Series B Preferred have the following rights, preferences and privileges:

The holders of Series B Preferred are

not

entitled to receive dividends but have voting rights equal to the number of shares of the Company’s Common Stock into which their Series B Preferred can be converted, whether or

not

the shares are available for issuance.

At the option of the holder, Series B Preferred

may

be converted in whole or in part, from time to time, into

6.38

post-split shares of Common Stock. The Series B Preferred Stock will automatically be converted into Common Stock if (i) at any time the

day average VWAP of the Company’s Common Stock prior to such automatic conversion is equal to pre-split

$0.10

or more; or (ii) the Company enters into a transaction for which the Company enters into a share exchange agreement or agreement and plan of merger, which agreement is executed within

ninety

(

) days after the date of the Certificate of Designation and pursuant to which the Company thereafter becomes a consolidated company with another entity, and the Company issues equity securities of the Company. Such automatic conversion would be converted by the same method described above for discretionary conversions.

In the event of any i) liquidation, dissolution or winding up of the Company, whether voluntary or involuntary, or ii) sale, merger, consolidation, reorganization or other transaction that results in a change of control of the Company, each holder of a share of Series B Preferred shall be entitled to receive, subject to prior preferences and other rights of any class or series of stock of the Company senior to the Series B Preferred, but prior and in preference to any distribution of any of the assets or surplus funds of the Company to holders of Common Stock, or any other class or series of stock of the Company junior to the Series B Preferred, an amount equal to the Stated Value (as adjusted for any stock dividends, combinations or splits with respect to such shares) (the “Preference Amount”). After such payment has been made to the holders of Series B Preferred of the full Preference Amount to which such holders shall be entitled, the remaining net assets of the Company available for distribution, if any, shall be distributed pro rata among the holders of Common Stock. In the event the funds or assets legally available for distribution to the holders of Series B Preferred are insufficient to pay the Preference Amount, then all funds or assets available for distribution to the holders of capital stock shall be paid to the holders of Series B Preferred pro rata based on the full Preference Amount to which they are entitled.

September 30, 2016,

the Company filed with the Secretary of State of the State of Oklahoma a Certificate of Amendment to the Certificate of Designation, increasing the number of authorized shares of Series B Preferred Stock from

2,000,000

shares to

6,600,000

shares.

Pursuant to the

September 30, 2016

closing date of the

May 31, 2016

Share Exchange Agreement, the Group issued

4,760,872

shares of the Group’s Series B Convertible Preferred Stock in the reverse acquisition of Coretec. On

July 27, 2017

the

4,760,872

Series B Preferred stock issued in the acquisition of Coretec and the previously issued

1,797,473

Preferred stock was converted into

41,842,241

post-split common shares of the Company which thereby retired all of the Series B Preferred stock.

Michael Kraft Options

March 21, 2017,

the Company and Mr. Michael Kraft entered into a Consulting Agreement whereby Mr. Kraft became the new CEO of the Company. Pursuant to the agreement the Company granted Mr. Kraft an option to purchase from the Company

$50,000

of common stock at the market price on the date of the execution of the Reverse Split, which became effective on

June 28, 2017.

Accordingly, the

$50,000

value of options calculates to

208,160

shares based upon the

$0.24

closing price on

June 28, 2017.

The

$50,000

estimated fair value of option to purchase common stock issued in

June 2017

was determined using the Black-Scholes option pricing model. The expected dividend yield of

is based on the average annual dividend yield at the date issued. Expected volatility of

260.52%

is based on the historical volatility of the stock. The risk-free interest rate of

1.84%

is based on the U.S. Treasury Constant Maturity rates as of the issue date. The expected life of the option of

ten

years is based on historical exercise behavior and expected future experience.

Golden State and Other Warrants

As of

December 31, 2018,

Golden State has warrants outstanding to purchase

shares of common stock at a price of

$114,450

per share which expire

December 31, 2018,

subsequently extended to

June 30, 2019.

Global Capital has warrants outstanding to purchase

1,000

shares of common stock at a price of

$0.96

per shares which expired on

March 31, 2019.

November 15, 2017,

the Company conducted a private placement with a related party, Victor Keen, Co-Chairman of the Board of Directors of the Company, pursuant to which it sold

20,000,000

shares of common stock, for a purchase price of

$750,000.

Simultaneously, the Company issued an option to purchase an aggregate of

2,666,667

shares of common stock to a

third

-party accredited investor as an inducement to provide Victor Keen with a personal loan, the proceeds from which Victor Keen used to partially fund his purchase of the shares.

The

one

-year option was exercisable, at any time on or after the

November 15, 2017,

at an exercise price of

$0.0375

per share and expired on

November 15, 2018.

The

$750,000

in proceeds received for the common stock issued and the option to purchase common stock were recorded using the relative fair value method under the guidance in ASC

470

The fair value of the

20,000,000

shares of common stock issued was determined using the quoted closing price of

$0.28

and the option was valued based on the Black Scholes valuation on

November 15, 2017

$714,719.

Based on the proportion of the fair values to the sum of the fair values of the common stock and the option,

$665,113

(

89%

) was allocated to the common stock and

$84,887

(

11%

) was allocated to the option.

The

$714,719

estimated fair value of option to purchase common stock issued in

November 2017

was determined using the Black-Scholes option pricing model. The expected dividend yield of

is based on the average annual dividend yield at the date issued. Expected volatility of

300.18%

is based on the historical volatility of the stock. The risk-free interest rate of

1.55%

is based on the U.S. Treasury Constant Maturity rates as of the issue date. The expected life of the option of

one

year is based on the historical exercise behavior and expected future experience.

Warrants Summary

The following table summarizes the Company’s warrant activity during the year ended

December 31, 2018:

						Weighted
				Weighted		Average
				Average		Remaining		Aggregate
	Number of			Exercise		Life		Intrinsic
	Warrants			Price		In Years		Value

Outstanding, December 31, 2017		32,728		$	215		0.09
Granted		-			-
Expired		(31,667	)		1.65
Exercised		-			-

Outstanding, December 31, 2018		1,061		$	6,589		0.26	$	-

Exercisable, December 31, 2018		1,061		$	6,589		0.26	$	-

The following table summarizes the Company’s warrants as of

December 31, 2018:

Warrants Outstanding				Warrants Exercisable
				Weighted
		Outstanding		Average		Exercisable
Exercise		Number of		Remaining Life		Number of
Price		Warrants		In Years		Warrants

$	0.96		1,000		0.25		1,000
$	114,450		61		0.50		61
	Total		1,061		0.26		1,061

Options Summary

Stock options for employees, directors or consultants that vest immediately, are valued at the date of award, which does

not

precede the approval date, and compensation cost is recognized in the period the options are vested. Stock options generally become exercisable on the date of grant and expire based on the terms of each grant.

The estimated fair value of options for common stock granted was determined using the Black-Scholes option pricing model. The expected dividend yield is based on the average annual dividend yield as of the grant date. Expected volatility is based on the historical volatility of our stock. The risk-free interest rate is based on the U.S. Treasury Constant Maturity rates as of the grant date. The expected life of the option is based on historical exercise behavior and expected future experience.

The following table summarizes the Company’s option activity during the year ended

December 31, 2018:

						Weighted
				Weighted		Average
				Average		Remaining		Aggregate
	Number of			Exercise		Life		Intrinsic
	Options			Price		In Years		Value

Outstanding, December 31, 2017		2,950,262		$	0.63		1.5	$	-
Granted		-			-				-
Expired		(2,733,705	)		0.40		-		-
Exercised		-			-		-		-
Outstanding, December 31, 2018		216,557		$	3.51		8.26	$	-

Exercisable, December 31, 2018		216,557		$	3.51		8.26	$	-

The following table summarizes the Company’s options as of

December 31, 2018:

Options Outstanding				Options Exercisable
				Weighted
		Outstanding		Average		Exercisable
Exercise		Number of		Remaining Life		Number of
Price		Options		In Years		Options

$	0.24		208,160		8.5		208,160
$	52.50		4,383		1.5		4,383
$	70.26		3,449		3.5		3,449
$	420.00		565		2.4		565
			216,557		8.3		216,557

Note 7 - Incentive Stock Plan	12 Months Ended
Note 7 - Incentive Stock Plan	Dec. 31, 2018
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	Note 7 – Incentive Stock Plan In March 2014, the Company’s 2014 Equity Incentive Plan (the “2014 EIP”) was established. The total number of shares of stock which may be purchased or granted directly by options, stock awards or restricted stock purchase offers, or purchased indirectly through exercise of options granted under the 2014 EIP shall not exceed fifty million ( 50,000,000 ) shares. The shares are included in a registration statement filed March 2014. As of December 31, 2018, there were 750,103 shares available for issuance under the 2014 EIP. In March 2015, the Company’s 2015 Equity Incentive Plan (the “2015 EIP”) was established. The total number of shares of stock which may be purchased or granted directly by options, stock awards or restricted stock purchase offers, or purchased indirectly through exercise of options granted under the 2015 EIP shall not exceed eighty-five million ( 85,000,000 ) shares. The shares are included in a registration statement filed March 2015. There are 142,244 shares available for issuance under the 2015 EIP as of December 31, 2018 . In January 2018, the Company’s 2018 Equity Incentive Plan (the “2018 EIP”) was established. The total number of shares of stock which may be purchased or granted directly by options, stock awards or restricted stock purchase offers, or purchased indirectly through exercise of options granted under the 2018 EIP shall not exceed fifteen million ( 15,000,000 ) shares. The shares are included in a registration statement filed January 2018. There are 13,952,161 shares available for issuance under the 2018 EIP as of December 31, 2018.

Note 8 - Office Lease	12 Months Ended
Note 8 - Office Lease	Dec. 31, 2018
Notes to Financial Statements
Leases of Lessee Disclosure [Text Block]	Note 8 – Office Lease The Company entered into a lease agreement in June 2015 for office space in North Dakota that was canceled on April 30, 2017 with no cancellation costs paid or due. The Company has an amended office lease in Tulsa, Oklahoma that expired on July 31, 2018. Rent expense for operating leases was $23,298 and $31,560 for the years ended December 31, 2018 and 2017, respectively. The Company is now on a month to month basis at $1,980 per month under the terms of the lease.

Note 9 - Related Party Transactions	12 Months Ended
Note 9 - Related Party Transactions	Dec. 31, 2018
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	Note 9 – Related Party Transactions The Company entered into a consulting agreement dated July 7, 2015 with Mr. Doug Freitag, who became the Company’s CEO on October 1, 2016. Mr. Freitag’s field of consultation was in the area of working as a federal business and private sector business consultant and technical consultant. The work under this consulting agreement was performed for the Company, in support of business development, research, development, and commercialization activities. The consulting agreement was effective as of July 2015 and continued in full force through July 2016 and will continue monthly thereafter, unless terminated under the terms of the agreement. On October 1, 2016, the Company entered into a consulting agreement with Mr. Doug Freitag which replaced the previous agreement, but the terms are identical. The consulting agreement was effective as of October 1, 2016 and continued in full force and effect through December 31, 2016. The Company paid Mr. Freitag a fee of $185 per hour. The Company entered into a third consulting agreement on January 1, 2017 with Mr. Freitag. Under the terms of the one -year agreement, Mr. Freitag’s fee is $194 per hour. The Company paid Mr. Freitag a fee of $58,054 for the year ended December 31, 2017. Mr. Freitag assumed a strategic consulting role as the Company’s Vice President of Technology and remained on the Company’s Board of Directors until his resignation on August 20, 2017. On March 21, 2017, Doug Freitag resigned as Chief Executive Officer of the Company in order to allow Michael A. Kraft to take over in his place as the Company’s newly appointed Chief Executive Officer. In connection with Mr. Kraft’s appointment, the Company entered into a consulting agreement with Mr. Kraft, pursuant to which it agreed to compensate Mr. Kraft, $1,500 per day for his commitment to allocate seven days a month to the Company and a $25,000 bonus payable in the Company’s restricted stock upon the occurrence of certain events. In addition, the Company agreed to issue to Mr. Kraft, an option to purchase up to $50,000 of the Company’s common stock at an exercise price equal to the market price as of the date on which certain milestones are completed. During the years ended December 31, 2018 and 2017, the company recognized $126,000 and $177,500 of expense respectively, under the terms of the agreement. At December 31, 2016 the Company had an aggregate balance of $440,500 of advances due to Mr. Victor Keen Co-Chairman of the Board of Directors. Subsequent to December 31, 2016, Mr. Keen advanced the Company an additional $181,000 such that as of December 31, 2018, an aggregate amount of $621,500 is due to Mr. Keen under the terms of a 14% Term loan which is included in notes payable – related party (see Note 4 ). As of December 31, 2018, accrued interest related to the 14% Term loan due June 2019 amounted to $187,238 and interest expense was $84,901 and $81,729 during the years ended December 31, 2018 and 2017 respectively. At December 31, 2016 the Company had an aggregate balance of $613,825 of advances due to CJNDL, a company owned by Mr. Simon Calton, a director of the Company. Subsequent to December 31, 2016, CJNDL advanced the Company an additional $162,109 under the terms of two loans, such that as of December 31, 2018, an aggregate amount of $775,934 is due to CJNDL under the terms of the loans which are included in notes payable – related party (see Note 4 ). As of December 31, 2018, accrued interest related to the two loans due June 2019 amounted to $238,938 and interest expense was $99,615 and $81,729 during the years ended December 31, 2018 and 2017 respectively. On March 30, 2017, the Company issued to Mr. Victor Keen, Co-Chairman of the Board of Directors, a 7% convertible promissory note in a principal amount of $250,000, due March 1, 2019. The promissory note shall automatically convert into eight percent ( 8% ) of the fully diluted outstanding shares of common stock of the Company calculated after giving effect to certain conversions as discussed in Note 4. On June 21, 2017, the Company issued to Mr. Victor Keen, Co-Chairman of the Board of Directors, a 7% convertible promissory note in a principal amount of $100,000, due June 21, 2019. The promissory note shall automatically convert into four percent ( 4% ) of the fully diluted outstanding shares of common stock of the Company calculated after giving effect to certain conversions discussed in Note 4. On November 15, 2017, the Company conducted a private placement with Victor Keen, Co-Chairman of the Board of Directors of the Company, pursuant to which it sold 20,000,000 shares of common stock for a purchase price of $750,000.

Note 10 - Settlement of Accounts Payable	12 Months Ended
Note 10 - Settlement of Accounts Payable	Dec. 31, 2018
Notes to Financial Statements
Settlement of Accounts Payable Disclosure [Text Block]	Note 1 0 – Settlement of Accounts Payable Digital Communication Agreement The Company entered into a one -year Digital Communication Agreement (“the Agreement”) with MDM Worldwide Solutions, Inc. (“MDM”) October 1, 2013 with automatic renewal for an additional twelve months unless either party notifies the other party in writing of its intention not to renew the Agreement at least sixty days prior to the requested date of termination. The agreement was canceled September 1, 2014. leaving a balance of $45,000 in accounts payable. The remaining balance in accounts payable was written off in 2018 and accordingly, the Company recognized a gain of $45,000 for the settlement of accounts payable in the year ending December 31, 2018. North Dakota State University Exclusive License Agreement Under the terms of the NDSU/RF Agreement signed on June 16, 2016 with NDSU/RF, the Company was delinquent on payments of $139,789 and unable to meet certain milestones. A dispute arose between the Company and NDSU/RF regarding compensation and deliverables. The NDSU/RF Agreement was renegotiated with NDSU/RF and on June 29, 2018, the Company entered into a settlement agreement and general release (the “Settlement Agreement”) with NDSU/RF to resolve the dispute, pursuant to which the Company and NDSU/RF fully and forever released each other from the NDSU/RF Agreement and mutually released each other of all claims. Accordingly, the Company recognized a gain of $139,789 for the settlement of accounts payable in the year ending December 31, 2018.

Note 11 - Subsequent Events	12 Months Ended
Note 11 - Subsequent Events	Dec. 31, 2018
Notes to Financial Statements
Subsequent Events [Text Block]	Note 1 1 – Subsequent Events Debentures Payable Subsequent to December 31, 2018, Golden State extended their 4.75% Convertible debenture to June 30, 2019. 14% Term Loan due June 2019 to related party Subsequent to December 31, 2018, CJNDL advanced $120,000 to the Company under the terms of the $500,000 revolving note agreement, increasing the total outstanding balance to $520,941. CJNDL has agreed that the excess amount funded to date and any future funding under the loan will be done on the same terms and conditions as the original note. 14% Term Loan due June 2019 to related party Subsequent to December 31, 2018, Victor Keen advanced $25,000 to the Company under the terms of the $100,000 revolving note agreement, increasing the total outstanding balance to $646,500. Mr. Keen has agreed that the excess amount funded to date and any future funding under the loan will be done on the same terms and conditions as the original note. 7% Convertible promissory note due June 2019 , related party Subsequent to December 31, 2018, Mr. Victor Keen extended the 7% promissory note due March 1, 2019 to June 30, 2019. Common stock issued Subsequent to December 31, 2018 the company issued 199,017 shares of common stock to Matthews Kappers in consideration of consulting services performed during the year ended December 31, 2018. F- 20

Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Nature of Business [Policy Text Block]

Nature of Business

The Coretec Group Inc. (the “Group”) (formerly

3DIcon

Corporation) (

“3DIcon”

) was incorporated on

August 11, 1995,

under the laws of the State of Oklahoma as First Keating Corporation. The articles of incorporation were amended

August 1, 2003

to change the name to

3DIcon

Corporation. During

2001,

First Keating Corporation began to focus on the development of

360

-degree holographic technology. From

January 1, 2001,

3DIcon’s

primary activity has been the raising of capital in order to pursue its goal of becoming a significant participant in the development, commercialization and marketing of next generation

display technologies.

Coretec Industries, LLC (“Coretec”), a wholly owned subsidiary of the Group (collectively the “Company”), was organized on

June 2, 2015

in the state of North Dakota. Coretec is currently developing, testing, and providing new and/or improved technologies, products, and service solutions for energy-related industries including, but

not

Business Combinations Policy [Policy Text Block]

Reverse Acquisition

May 31, 2016,

the Group entered into a Share Exchange Agreement (the “Share Exchange Agreement”) with Coretec and

four

Coretec members (the “Members”), which Members held all outstanding membership interests in Coretec. On

September 30, 2016 (

4,760,872

65%

of the Group’s common stock on a fully-diluted basis on the Closing Date. Upon the closing of the Share Exchange Agreement,

two

of the Group’s Directors resigned and

three

new Directors associated with Coretec were nominated and elected, giving control of the board of directors to former Coretec Members. The

65%

holders of the Group common stock were unable to sell that stock for a period of

one

Authorization of Name Change, Policy [Policy Text Block]

Authorization of Name Change

February 21, 2017,

the Board unanimously approved the proposal to seek stockholder approval and authorization to amend the

3DIcon

Certificate of Incorporation to change the name of

3DIcon

to “The Coretec Group Inc.” (the “Name Change”) and thereafter change its trading symbol to a trading symbol resembling the name of the Group following the Name Change. On

February 21, 2017,

a majority of the Group’s stockholders adopted resolutions by written consent authorizing the Board to undertake the Name Change. This Name Change became effective

June 28, 2017

upon the Group’s filing of the Name Change Amendment with the Secretary of State of the State of Oklahoma.

Authorization of Reverse Stock Split, Policy [Policy Text Block]

Authorization of Reverse Stock Split

February 21, 2017 (

the “Record Date”), the Board of Directors unanimously approved, and a majority of the Company’s stockholders, as of the Record Date, approved by written consent pursuant to Section

1073

of the Oklahoma Act, to permit the Company’s Board of Directors, in its sole discretion, to effectuate

one

or more consolidations of the issued and outstanding shares of common stock at some future date

later than the

first

anniversary of the Record Date, pursuant to which the shares of common stock would be combined and reclassified into

one

validly issued fully paid and non-assessable share of common stock at a ratio (the “Reverse Split Ratio”) within the range of

-for-

and up to

-for-

300

(the “Reverse Split Range”), with each stockholder otherwise entitled to receive a fractional share of common stock as a result of the Reverse Stock Split. Effective

June 28, 2017,

a Reverse Stock Split pursuant to the maximum stated Reverse Split Ratio, each

300

shares of our issued and outstanding common stock was automatically converted into

share of common stock.

Basis of Accounting, Policy [Policy Text Block]

Basis of Presentation

not

include the historical results of operations for

3DIcon

prior to the completion of the acquisition.

3DIcon’s

assets and liabilities were consolidated with the assets and liabilities of Coretec as of the

September 30, 2016

consummation of the acquisition.

Consolidation, Policy [Policy Text Block]

Principles of Consolidation

The consolidated balance sheets as of

December 31, 2018

and

2017

and the consolidated statements of operations and cash flows for the years ended

December 31, 2018

and

2017

include the accounts of the Group and its wholly owned subsidiary, Coretec. Intercompany transactions and balances have been eliminated in consolidation.

Use of Estimates, Policy [Policy Text Block]

Use of Estimates

Property, Plant and Equipment, Policy [Policy Text Block]

Property and Equipment

Estimated useful lives of property and equipment are as follows for the major classes of assets:

Asset Description		Estimated Lives (years)
Furniture and fixtures			7

Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]

Intangible Assets

Intangible assets consist primarily of acquired patents. The Company acquired

$1,400,000

of intangible assets in conjunction with the reverse acquisition discussed in Note

Intangible assets with finite lives are amortized on a straight-line basis over their useful lives.

Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]

Goodwill

Goodwill was acquired with the reverse acquisition discussed in Note

The Company evaluates the carrying value of goodwill on an annual basis and between annual evaluations if events occur or circumstances change that would more likely than

not

reduce the fair value of goodwill below its carrying amount. When assessing whether goodwill is impaired, management considers

first

a qualitative approach to evaluate whether it is more likely than

not

impairment charges were recognized.

Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block]

Long-Lived Assets

Long-lived assets, such as property and equipment and intangible assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset

may

not

be recoverable. If circumstances require a long-lived asset or asset group be tested for possible impairment, the Company

first

compares undiscounted cash flows expected to be generated by that asset or asset group to its carrying value. If the carrying value of the long-lived asset or asset group is

not

third

-party independent appraisals, as considered necessary.

Fair Value of Financial Instruments, Policy [Policy Text Block]

Fair Value of Financial Instruments

The following methods and assumptions were used to estimate the fair value of each class of financial instrument held by the Company:

Current assets and current liabilities

- The carrying value approximates fair value due to the short maturity of these items.

Notes payable

- The fair value of the Company's notes payable has been estimated by the Company based upon the liability's characteristics, including interest rate. The carrying value approximates fair value.

Earnings Per Share, Policy [Policy Text Block]

Basic and Diluted Loss Per Common Share

	December 31,
	201 8		201 7
Options		216,557		2,950,262
Warrants		1,061		32,728
Series A convertible preferred stock		115,000		115,000
Convertible debentures		289,804,783		84,103,256
Total potentially dilutive shares		290,137,401		87,201,246

Research and Development Expense, Policy [Policy Text Block]

Research and Development

Research and development costs are expensed as incurred. Research and development costs amounted to approximately

$85,000

and

$456,000

for the years ended

December 31, 2018

and

2017,

respectively.

Income Tax, Policy [Policy Text Block]

Income Taxes

not

to occur upon examination by tax authorities. Management has

not

identified any uncertain tax positions in filed income tax returns that require recognition or disclosure in the accompanying consolidated financial statements.

New Accounting Pronouncements, Policy [Policy Text Block]

Recent Accounting Pronouncements

The following is a summary of recent accounting pronouncements that are relevant to the Company:

January 2016,

the FASB issued ASU

No.

2016

01,

Financial Instruments – Overall (Subtopic

825

): Recognition and Measurement of Financial Assets and Financial Liabilities

(“ASU

2016

01”

). ASU

2016

addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments, specifically equity investments and financial instruments measured at amortized cost. ASU

2016

is effective for public companies for annual and interim periods beginning after

December 15, 2017.

ASU

2016

did

not

have a material impact on the Company’s financial statements.

August 2016,

the FASB issued ASU

No.

2016

15,

Statement of Cash Flows (Topic

230

): Classification of Certain Cash Receipts and Cash Payments

(“ASU

2016

15”

). ASU

2016

will make

eight

targeted changes to how cash receipts and cash payments are presented and classified in the statement of cash flows. ASU

2016

is effective for public companies for interim and annual periods beginning after

December 15, 2017.

ASU

2016

did

not

have a material impact on the Company’s cash flows.

February 2016,

the FASB issued accounting standards update (ASU)

No.

2016

02,

Leases (Topic

842

)

December 15, 2018,

including interim periods within those fiscal years. The Company determined the ASU will

not

have a material impact to the consolidated financial statements as the Company only has

one

lease that is operating month to month.

The FASB has issued ASU

2014

09,

Revenue from Contracts with Customers

. This ASU supersedes the revenue recognition requirements in FASB ASC

605

July 9, 2015,

the FASB deferred the effective date of ASU

No.

2014

from annual periods beginning after

December 15, 2016

to annual periods beginning after

December 15, 2017.

The adoption of this standard did

not

have a material impact on the Company’s consolidated financial position and results of operations because the Company currently has

revenue.

January 2017,

the FASB issued ASU

2017

01,

Business Combinations (Topic

805

): Clarifying the Definition of a Business

. This ASU provides a screen to determine when a set is

not

a business. The amendments in this ASU are effective beginning after

December 15, 2017,

including interim periods within those periods and should be applied prospectively. The adoption of this standard did

not

have a material impact on the Company’s consolidated financial position and results of operations.

January 2017,

the FASB issued ASU

2017

04,

Intangibles – Goodwill and Other (Topic

350

): Simplifying the Test for Goodwill Impairment

. This ASU simplifies the subsequent measurement of goodwill by eliminating Step

from the goodwill test. Under Step

December 15, 2019,

however early adoption is permitted beginning

January 1, 2017

and should be applied on a prospective basis. The Company does

not

anticipate that the adoption of this standard will have a material impact on its consolidated financial position and results of operations.

Uncertainties, Policy [Policy Text Block]

Uncertainties

The Company has realized a cumulative net loss of

$3,639,808

for the period from inception (

June 2, 2015)

December 31, 2018,

negative working capital of

2,847,980,

and

may

make, the Company’s debt holders do

not

agree to convert their notes into equity or extend the maturity dates of their notes, the Company

may

not

necessarily purport to represent realizable or settlement values. The consolidated financial statements do

not

include any adjustments that might result from the outcome of this uncertainty.

Under the terms of the Golden State Equity Investors, Inc (“Golden State”)

4.75%

Convertible Debenture due on

December 31, 2018,

subsequently extended to

June 30, 2019,

Golden State is obligated to submit conversion notices in an amount such that Golden State receives

of the outstanding shares of the Company every calendar quarter for a period of

one

$114,450

per share. The number of warrants exercisable is subject to certain beneficial ownership limitations contained in the

4.75%

Convertible Debenture (“the Beneficial Ownership Limitations”). The Beneficial Ownership Limitations prevent Golden State from converting on the

4.75%

Convertible Debenture or exercising warrants if such conversion or exercise would cause Golden State’s holdings to exceed

9.99%

of the Company’s issued and outstanding common stock. Subject to the Beneficial Ownership Limitations and provided that Golden State is able to sell the shares under Rule

144,

Golden State is required to convert

$28.60

of the

4.75%

Convertible Debenture and exercise

2.86

warrants per month. Based upon the current stock price, the issued and outstanding shares as of

December 31, 2018

and ignoring the impact of the Beneficial Ownership Limitations, the Company

may

receive up to

$327,000

per month in funding for the duration of the debenture from Golden State as a result of warrant exercises. Due to the Beneficial Ownership Limitations, Golden State did

not

provide funding in the year ended

December 31, 2017

and only

$23,766

2018.

Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Property Plant and Equipment, Estimated Useful Lives [Table Text Block]

Asset Description		Estimated Lives (years)
Furniture and fixtures			7

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	December 31,
	201 8		201 7
Options		216,557		2,950,262
Warrants		1,061		32,728
Series A convertible preferred stock		115,000		115,000
Convertible debentures		289,804,783		84,103,256
Total potentially dilutive shares		290,137,401		87,201,246

Note 2 - Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Property, Plant and Equipment [Table Text Block]

	December 31,			December 31,
	201 8			201 7
Furniture and fixtures	$	13,286		$	13,286
Less: Accumulated depreciation		(12,404	)		(11,648	)
Totals	$	882		$	1,638

Note 3 - Patents (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	December 31, 201 8							December 31, 201 7
	Gross							Gross							Useful
	Carrying		Accumulated			Net Book		Carrying		Accumulated			Net Book		Life
	Amount		Amortization			Value		Amount		Amortization			Value		In Years

Patents	$	1,400,000	$	(180,516	)	$	1,219,484	$	1,400,000	$	(100,286	)	$	1,299,714		17.45

Note 4 - Debentures and Notes Payable (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Long-term Debt Instruments [Table Text Block]

	December 31,			December 31,
	201 8			201 7
Notes and debentures payable:
6.05% Insurance premium finance agreement due July 2019	$	31,089		$	-
5.25% Insurance premium finance agreement, due June 2018		-			21,323
9% Promissory note due June 2018		-			25,341
4.75% Convertible debenture due June 2019		63,675			64,124
Total notes and debentures payable	$	94,764		$	110,788

Notes payable - related party:
14% Term loan due June 2019	$	374,993		$	264,993
14% Term loan due June 2019		621,500			596,500
14% Term loan due June 2019		400,941			400,941
7% Convertible promissory note due June 2019, net		228,627			98,187
7% Convertible promissory note due June 2019, net		76,239			26,235
Total notes payable - related party		1,702,300			1,386,856
Less current maturities		(1,702,300	)		(1,262,434	)
Long-term debt	$	-		$	124,422

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

Note 6 - Preferred Stock, Warrants and Options (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

						Weighted
				Weighted		Average
				Average		Remaining		Aggregate
	Number of			Exercise		Life		Intrinsic
	Options			Price		In Years		Value

Outstanding, December 31, 2017		2,950,262		$	0.63		1.5	$	-
Granted		-			-				-
Expired		(2,733,705	)		0.40		-		-
Exercised		-			-		-		-
Outstanding, December 31, 2018		216,557		$	3.51		8.26	$	-

Exercisable, December 31, 2018		216,557		$	3.51		8.26	$	-

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

Warrants Outstanding				Warrants Exercisable
				Weighted
		Outstanding		Average		Exercisable
Exercise		Number of		Remaining Life		Number of
Price		Warrants		In Years		Warrants

$	0.96		1,000		0.25		1,000
$	114,450		61		0.50		61
	Total		1,061		0.26		1,061

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

Options Outstanding				Options Exercisable
				Weighted
		Outstanding		Average		Exercisable
Exercise		Number of		Remaining Life		Number of
Price		Options		In Years		Options

$	0.24		208,160		8.5		208,160
$	52.50		4,383		1.5		4,383
$	70.26		3,449		3.5		3,449
$	420.00		565		2.4		565
			216,557		8.3		216,557

Warrant [Member]

Notes Tables

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

						Weighted
				Weighted		Average
				Average		Remaining		Aggregate
	Number of			Exercise		Life		Intrinsic
	Warrants			Price		In Years		Value

Outstanding, December 31, 2017		32,728		$	215		0.09
Granted		-			-
Expired		(31,667	)		1.65
Exercised		-			-

Outstanding, December 31, 2018		1,061		$	6,589		0.26	$	-

Exercisable, December 31, 2018		1,061		$	6,589		0.26	$	-

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

+ References + Details

Note 1 - Summary of Significant Accounting Policies (Details Textual)				12 Months Ended		43 Months Ended
	Jun. 28, 2017	Feb. 21, 2017	Sep. 30, 2016 shares	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares	Dec. 31, 2018 USD ($) $ / shares shares	Apr. 26, 2016
Goodwill, Impairment Loss				$ 0	$ 0
Research and Development Expense, Total				85,066	456,360
Income Tax Expense (Benefit), Total				0
Unrecognized Tax Benefits, Ending Balance				0		$ 0
Net Income (Loss) Attributable to Parent, Total				(1,046,471)	(1,713,233)	(3,639,808)
Working Capital Deficit				(2,847,980)		(2,847,980)
Revenue from Contract with Customer, Including Assessed Tax						$ 0
Debt Instrument, Interest Rate, Stated Percentage							4.75%
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares				$ 6,589	$ 215	$ 6,589
Proceeds from Warrant Exercises				$ 23,766
Warrant [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares				$ 114,450		$ 114,450
Golden State Debentures [Member]
Debt Instrument, Interest Rate, Stated Percentage				4.75%		4.75%
Ownership Percentage of Common Shares Outstanding				1.00%		1.00%
Debt Instrument Conversion Circumstance Trading Price per Certain Principal Amount of Debt as Percentage of Common Stock Price				9.99%		9.99%
Debt Conversion, Converted Instrument, Amount				$ 28.60
Class of Warrant or Right, Number of Warrants Exercisbable Per Month \| shares				2.86		2.86
Proceeds from Warrant Exercises				$ 23,766	$ 0
Patents [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles				1,400,000		$ 1,400,000
Maximum [Member] \| Golden State Debentures [Member]
Maximum Monthly Proceeds from Warrant Exercises				$ 327,000
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	300
Reverse Stock Split [Member] \| Minimum [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio		50
Reverse Stock Split [Member] \| Maximum [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio		300
Series B Convertible Preferred Stock [Member]
Stock Issued During Period, Shares, Conversion of Convertible Securities \| shares			4,760,872
Sale of Stock, Percentage of Ownership after Transaction			65.00%

Note 1 - Summary of Significant Accounting Policies - Estimated Useful Lives (Details)	12 Months Ended
	Dec. 31, 2018
Furniture and Fixtures [Member]
Furniture and fixtures (Year)	7 years

Note 1 - Summary of Significant Accounting Policies - Antidilutive Securities Excluded From Computation of Earnings Per Share (Details) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Total potentially dilutive shares (in shares)	290,137,401	87,201,246
Options [Member]
Total potentially dilutive shares (in shares)	216,557	2,950,262
Warrant [Member]
Total potentially dilutive shares (in shares)	1,061	32,728
Series A Convertible Preferred Stock [Member]
Total potentially dilutive shares (in shares)	115,000	115,000
Convertible Debt Securities [Member]
Total potentially dilutive shares (in shares)	289,804,783	84,103,256

Note 2 - Property and Equipment (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Depreciation, Total	$ 756	$ 1,002

Note 2 - Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Totals	$ 882	$ 1,638
Furniture and Fixtures [Member]
Furniture and fixtures	13,286	13,286
Less: Accumulated depreciation	(12,404)	(11,648)
Totals	$ 882	$ 1,638

Note 3 - Patents (Details Textual)	Sep. 30, 2016 USD ($)
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 80,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	80,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	80,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	80,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	80,000
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	$ 80,000

Note 3 - Patents - Schedule of Patents (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Patents, net	$ 1,219,484	$ 1,299,714
Patents [Member]
Finite-Lived Intangible Assets, Gross Carrying Amount	1,400,000	1,400,000
Finite-Lived Intangible Assets, Accumulated Amortization	(180,516)	(100,286)
Patents, net	$ 1,219,484	$ 1,299,714
Finite-Lived Intangible Asset, Useful Life In Years (Year)	17 years 164 days

Note 4 - Debentures and Notes Payable (Details Textual)									12 Months Ended
Note 4 - Debentures and Notes Payable (Details Textual)	May 24, 2018 USD ($) $ / shares shares	Jan. 08, 2018 USD ($) $ / shares shares	Jul. 27, 2017 shares	Jun. 21, 2017 USD ($) shares	Mar. 30, 2017 USD ($)	Mar. 07, 2017 shares	Jun. 16, 2016 USD ($)	Nov. 03, 2006 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares	Sep. 30, 2018 USD ($)	Dec. 31, 2016 USD ($)	Apr. 26, 2016 USD ($)	Apr. 18, 2016 USD ($)	Feb. 24, 2016 USD ($)	Jun. 01, 2015 USD ($)
Debt Instrument, Interest Rate, Stated Percentage													4.75%
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares									$ 6,589	$ 215
Class of Warrant or Right, Exercised During Period \| shares
Proceeds from Warrant Exercises									$ 23,766
Notes Payable, Related Parties									1,702,300	1,386,856
Amortization of Debt Discount (Premium)									$ 180,444	$ 124,422
Conversion from Series B Preferred Stock to Common Stock [Member]
Conversion of Stock, Shares Converted \| shares			1,797,473
Conversion from Convertible Debenture to Common Stock [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 114,450
Debt Conversion, Original Debt, Amount	$ 225	$ 225
Debt Conversion, Converted Instrument, Shares Issued \| shares	396,635	244,618
Debt Instrument, Convertible, Conversion Price \| $ / shares	$ 0.0006	$ 0.0009
Class of Warrant or Right, Exercised During Period \| shares	0.2143
Warrants in Connection with 4.75% Convertible Debenture Due June 2018 [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights \| shares								61
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares		$ 114,450						$ 114,450
Class of Warrant or Right, Exercised During Period \| shares		0.2143
Proceeds from Warrant Exercises	$ 23,766	$ 24,525
Six Point Zero Five Percent Insurance Premium Finance Agreement, Due July 2019 [Member]
Debt Instrument, Interest Rate, Stated Percentage									6.05%
Debt Instrument, Face Amount									$ 48,855
Repayments of Debt									$ 17,766
Five Point Two Five Percent Insurance Premium Finance Agreement, Due June 2018 [Member]
Debt Instrument, Interest Rate, Stated Percentage									5.25%	5.25%
Debt Instrument, Face Amount									$ 37,711
Repayments of Debt									$ 21,323
Nine Percent Promissory Note Due June 2018 [Member]
Debt Instrument, Interest Rate, Stated Percentage									9.00%	9.00%			9.00%
Debt Instrument, Face Amount													$ 40,000
Long-term Debt, Gross													$ 40,000
Debt Instruments, Proceeds from Notes to Fund Exercise of Warrants							$ 14,659		$ 25,341
Long-term Debt, Total										$ 25,341
Four Point Seventy Five Percent Convertible Debenture Due June 2018 [Member]
Debt Instrument, Interest Rate, Stated Percentage								4.75%
Debt Instrument, Face Amount								$ 100,000
Debt Instrument, Convertible, Conversion Price, Threshold \| $ / shares								$ 1,200
Debt instrument, Convertible, Conversion Price, Threshold Percentage of Five Lowest Volume Weighted Average Prices								80.00%
Debt Instrument, Convertible, Threshold Trading Days								20
Debt Instrument, Accrued and Unpaid Interest on Debt Converted, Percentage								135.00%
Four Point Seventy Five Percent Convertible Debenture Due June 2018 [Member] \| Maximum [Member]
Debt Instrument, Convertible, Conversion Price \| $ / shares								$ 210
Fourteen Percent Term Loan Due June 2018, One [Member]
Debt Instrument, Interest Rate, Stated Percentage									14.00%	14.00%
Notes Payable, Related Parties									$ 374,993	$ 264,993
Fourteen Percent Term Loan Due June 2018, One [Member] \| Carlton James North Dakota Limited [Member]
Debt Instrument, Interest Rate, Stated Percentage														14.00%
Debt Agreement, Maximum Borrowing Capacity														$ 100,000
Debt Instrument, Interest Rate, Monthly														1.167%
Notes Payable, Related Parties									$ 374,993
Debt Instrument, Advances in Excess of Facility Limit											$ 274,993
Fourteen Percent Term Loan Due June 2018, Two [Member]
Debt Instrument, Interest Rate, Stated Percentage									14.00%	14.00%
Notes Payable, Related Parties									$ 621,500	$ 596,500
Fourteen Percent Term Loan Due June 2018, Two [Member] \| Carlton James North Dakota Limited [Member]
Notes Payable, Related Parties									621,500
Debt Instrument, Advances in Excess of Facility Limit									$ 301,000
Fourteen Percent Term Loan Due June 2018, Two [Member] \| Co-chairman of Board of Directors [Member]
Debt Instrument, Interest Rate, Stated Percentage									14.00%						14.00%
Debt Agreement, Maximum Borrowing Capacity															$ 300,000
Debt Instrument, Interest Rate, Monthly															1.167%
Notes Payable, Related Parties									$ 621,500			$ 440,500
Fourteen Percent Term Loan Due June 2018, Three [Member]
Debt Instrument, Interest Rate, Stated Percentage									14.00%	14.00%
Notes Payable, Related Parties									$ 400,941	$ 400,941
Fourteen Percent Term Loan Due June 2018, Three [Member] \| Carlton James North Dakota Limited [Member]
Debt Instrument, Interest Rate, Stated Percentage																14.00%
Debt Instrument, Face Amount																$ 500,000
Debt Agreement, Maximum Borrowing Capacity																$ 500,000
Debt Instrument, Interest Rate, Monthly																1.167%
Notes Payable, Related Parties											$ 400,941
Seven Percent Convertible Promissory Note Due March 2019, Related Party [Member] \| Co-chairman of Board of Directors [Member]
Debt Instrument, Interest Rate, Stated Percentage					7.00%
Debt Instrument, Face Amount					$ 250,000
Debt Instrument, Convertible, Conversion Percentage					8.00%
Debt Instrument, Unamortized Discount, Total					$ 250,000
Amortization of Debt Discount (Premium)									$ 130,440	$ 98,187
Seven Percent Convertible Promissory Note Due March 2019, Related Party [Member] \| Co-chairman of Board of Directors [Member] \| Conversion from Series B Preferred Stock to Common Stock [Member]
Conversion of Stock, Shares Converted \| shares						6,413,108
Seven Percent Convertible Promissory Note Due June 2019 [Member]
Debt Instrument, Interest Rate, Stated Percentage									7.00%	7.00%
Notes Payable, Related Parties									$ 76,239	$ 26,235
Seven Percent Convertible Promissory Note Due June 2019 [Member] \| Co-chairman of Board of Directors [Member]
Debt Instrument, Interest Rate, Stated Percentage				7.00%
Debt Instrument, Face Amount				$ 100,000
Debt Instrument, Convertible, Conversion Percentage				4.00%
Debt Instrument, Unamortized Discount, Total				$ 100,000
Amortization of Debt Discount (Premium)									$ 50,004	$ 26,235
Seven Percent Convertible Promissory Note Due June 2019 [Member] \| Co-chairman of Board of Directors [Member] \| Convert Convertible Securities to Common Stock [Member]
Conversion of Stock, Shares Converted \| shares				4,128,665

Note 4 - Debentures and Notes Payable - Schedule of Debt (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Notes and debentures payable	$ 94,764	$ 110,788
Notes Payable, Related Parties	1,702,300	1,386,856
Less current maturities	(1,702,300)	(1,262,434)
Long-term debt		124,422
Six Point Zero Five Percent Insurance Premium Finance Agreement, Due July 2019 [Member]
Notes and debentures payable	31,089
Five Point Two Five Percent Insurance Premium Finance Agreement, Due June 2018 [Member]
Notes and debentures payable		21,323
Nine Percent Promissory Note Due June 2018 [Member]
Notes and debentures payable		25,341
Four Point Seventy Five Percent Convertible Debenture Due June 2018 [Member]
Notes and debentures payable	63,675	64,124
Fourteen Percent Term Loan Due June 2018, One [Member]
Notes Payable, Related Parties	374,993	264,993
Fourteen Percent Term Loan Due June 2018, Two [Member]
Notes Payable, Related Parties	621,500	596,500
Fourteen Percent Term Loan Due June 2018, Three [Member]
Notes Payable, Related Parties	400,941	400,941
Seven Percent Convertible Promissory Note Due March 2019 [Member]
Notes Payable, Related Parties	228,627	98,187
Seven Percent Convertible Promissory Note Due June 2019 [Member]
Notes Payable, Related Parties	$ 76,239	$ 26,235

Note 4 - Debentures and Notes Payable - Schedule of Debt (Details) (Parentheticals)	Dec. 31, 2018	Dec. 31, 2017	Apr. 26, 2016
Interest rate			4.75%
Five Point Two Five Percent Insurance Premium Finance Agreement, Due June 2018 [Member]
Interest rate	5.25%	5.25%
Nine Percent Promissory Note Due June 2018 [Member]
Interest rate	9.00%	9.00%	9.00%
Fourteen Percent Term Loan Due June 2018, One [Member]
Interest rate	14.00%	14.00%
Fourteen Percent Term Loan Due June 2018, Two [Member]
Interest rate	14.00%	14.00%
Fourteen Percent Term Loan Due June 2018, Three [Member]
Interest rate	14.00%	14.00%
Seven Percent Convertible Promissory Note Due June 2019 [Member]
Interest rate	7.00%	7.00%

Note 5 - Commitments (Details Textual) - USD ($)		1 Months Ended	12 Months Ended		13 Months Ended
Note 5 - Commitments (Details Textual) - USD ($)	Aug. 01, 2016	Jun. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Aug. 31, 2016
Research and Development Expense, Total			$ 85,066	$ 456,360
North Dakota State University Research Foundation [Member]
Reimbursement of Cost Relating to Research, Remaining Balance			93,578
Concordia Financial Group [Member]
Payments for Fee, Hourly	$ 185
Research and Development Expense, Total			54,483	66,555
North Dakota State University Research Foundation [Member]
Research and Development Expense, Total				$ 100,932
Reimbursement of Cost Relating to Research, Maximum Amount		$ 190,000			$ 70,000
Increase in Reimbursement of Cost Relating to Research		$ 120,000
Vice President of Technology [Member]
Consulting Fee			$ 58,063

Note 6 - Preferred Stock, Warrants and Options (Details Textual) - USD ($)							1 Months Ended	2 Months Ended	12 Months Ended
	Nov. 15, 2017	Jul. 27, 2017	Jun. 28, 2017	Mar. 21, 2017	May 31, 2016	Mar. 22, 2016	Nov. 30, 2017	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Nov. 15, 2018	Sep. 30, 2016
Preferred Stock, Shares Authorized								500,000	500,000	500,000
Convertible Preferred Stock, Volume Weighted Average Price Trigger									$ 15
Class of Warrant or Right, Exercise Price of Warrants or Rights								$ 215	$ 6,589	$ 215
Maximum Conversion Beneficial Ownership									4.99%
Maximum Adjustment Conversion Beneficial Ownership, Upon 61 Day Prior Notice									9.99%
Preferred Stock, Par or Stated Value Per Share								$ 0.0002	$ 0.0002	$ 0.0002
Stock Issued During Period, Value, Share-based Compensation, Gross	$ 714,719						$ 714,719
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate							0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate							300.18%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate							1.55%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term							1 year
Class of Warrant or Right, Outstanding								32,728	1,061	32,728
Stock Issued During Period, Value, New Issues										$ 750,000
Proceeds from Issuance or Sale of Equity, Total										$ 750,000
Private Placement [Member]
Sale of Stock, Price Per Share	$ 20,000,000								$ 0.28
Stock Issued During Period, Value, New Issues	$ 750,000
Proceeds from Issuance of Options	$ 84,887
Proceeds from Issuance of Options, Percent	11.00%
Chief Executive Officer [Member]
Stock Issued During Period, Value, Share-based Compensation, Gross				$ 50,000
Stock Issued During Period, Shares, Share-based Compensation, Gross			208,160
Share Price			$ 0.24
Chief Executive Officer [Member] \| Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate									0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate									260.52%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate									1.84%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term									10 years
Conversion from Series B Preferred Stock Issued in Acquisition to Common Stock [Member]
Conversion of Stock, Shares Converted		4,760,872
Conversion from Series B Preferred Stock to Common Stock [Member]
Conversion of Stock, Shares Converted		1,797,473
Series A Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right									50
Class of Warrant or Right, Exercise Price of Warrants or Rights									$ 0.0055
Golden State Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights									$ 114,450
Class of Warrant or Right, Outstanding									61
Global Capital Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights									$ 0.96
Class of Warrant or Right, Outstanding									1,000
Option Issued to Accredited Investor [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights											$ 0.0375
Class of Warrant or Right, Number of Securities Called by Warrants or Rights									2,666,667
Class of Warrant or Right or Option, Expiration Period								1 year
Common Stock [Member]
Stock Issued During Period, Shares, Conversion of Convertible Securities									641,253	41,842,241
Conversion of Stock, Shares Issued		41,842,241
Stock Issued During Period, Value, New Issues										$ 4,000
Proceeds from Issuance or Sale of Equity, Total									$ 750,000
Common Stock [Member] \| Private Placement [Member]
Proceeds from Issuance of Common Stock	$ 665,113
Proceed from Issuance of Common Stock, Percent	89.00%
Series A Preferred Stock [Member]
Preferred Stock, Shares Authorized									500,000
Preferred Stock, Par Value, Per Share									$ 0.0002
Preferred Stock, Stated Value, Per Share									$ 1
Preferred Stock, Dividend Rate, Percentage									6.00%
Preferred Stock, Amount of Preferred Dividends in Arrears									$ 107,000
Series A Preferred Stock [Member] \| Common Stock [Member]
Stock Issued During Period, Shares, Conversion of Convertible Securities									166,667
Series B Preferred Stock [Member]
Preferred Stock, Shares Authorized						2,000,000						6,600,000
Stock Issued During Period, Shares, Conversion of Convertible Securities					4,760,872	6.38
Convertible Preferred Stock, Volume Weighted Average Price Trigger						$ 0.10
Preferred Stock, Par or Stated Value Per Share						$ 1

Note 6 - Preferred Stock, Warrants and Options - Warrants (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Outstanding, number of warrants (in shares)	32,728
Outstanding, weighted-average exercise price (in dollars per share)	$ 215
Outstanding, weighted-average remaining life (Year)	94 days	32 days
Granted, number of warrants (in shares)
Granted, weighted-average exercise price (in dollars per share)
Expired, number of warrants (in shares)	(31,667)
Expired, weighted-average exercise price (in dollars per share)	$ 1.65
Exercised, number of warrants (in shares)
Exercised, weighted-average exercise price (in dollars per share)
Outstanding, number of warrants (in shares)	1,061	32,728
Outstanding, weighted-average exercise price (in dollars per share)	$ 6,589	$ 215
Outstanding, aggregate intrinsic value
Exercisable, number of warrants (in shares)	1,061
Exercisable, weighted-average exercise price (in dollars per share)	$ 6,589
Exercisable, weighted-average remaining life (Year)	94 days
Exercisable, aggregate intrinsic value

Note 6 - Preferred Stock, Warrants and Options - Summary of Warrants (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 6,589	$ 215
Class of Warrant or Right, Outstanding	1,061	32,728
Warrant exercisable, weighted average remaining contractual life (Year)	94 days
Warrant exercisable, number of warrants (in shares)	1,061
Warrant One [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.96
Class of Warrant or Right, Outstanding	1,000
Warrant exercisable, weighted average remaining contractual life (Year)	91 days
Warrant exercisable, number of warrants (in shares)	1,000
Warrant Two [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 114,450
Class of Warrant or Right, Outstanding	61
Warrant exercisable, weighted average remaining contractual life (Year)	182 days
Warrant exercisable, number of warrants (in shares)	61
Warrant Three [Member]
Class of Warrant or Right, Outstanding	1,061
Warrant exercisable, weighted average remaining contractual life (Year)	94 days
Warrant exercisable, number of warrants (in shares)	1,061

Note 6 - Preferred Stock, Warrants and Options - Option Activity (Details) - Employee Stock Option [Member] - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Outstanding, Shares (in shares)	2,950,262
Outstanding, Weighted average exercise price (in dollars per share)	$ 0.63
Outstanding, Weighted average remaining life (Year)	8 years 94 days	1 year 182 days
Outstanding, Aggregate intrinsic value
Granted, Shares (in shares)
Granted, Weighted average exercise price (in dollars per share)
Granted, Weighted average remaining life (Year)
Expired, Shares (in shares)	(2,733,705)
Expired, Weighted average exercise price (in dollars per share)	$ 0.40
Expired, Weighted average remaining life
Exercised, Shares (in shares)
Exercised, Weighted average exercise price (in dollars per share)
Outstanding, Shares (in shares)	216,557	2,950,262
Outstanding, Weighted average exercise price (in dollars per share)	$ 3.51	$ 0.63
Exercisable, Shares (in shares)	216,557
Exercisable, Weighted average exercise price (in dollars per share)	$ 3.51
Exercisable, Weighted average remaining life (Year)	8 years 94 days
Exercisable, Aggregate intrinsic value

Note 6 - Preferred Stock, Warrants and Options - Shares Authorized Under Stock Option Plans (Details)	12 Months Ended
	Dec. 31, 2018 $ / shares shares
Option Outstanding, Number Of Options (in shares)	216,557
Option Exercisable ,Weighted Average Remaining Life In Years (Year)	8 years 109 days
Option Exercisable, Number Of Options (in shares)	216,557
Exercise Price Range One [Member]
Option Outstanding, Exercise Price (in dollars per share) \| $ / shares	$ 0.24
Option Outstanding, Number Of Options (in shares)	208,160
Option Exercisable ,Weighted Average Remaining Life In Years (Year)	8 years 182 days
Option Exercisable, Number Of Options (in shares)	208,160
Exercise Price Range Two [Member]
Option Outstanding, Exercise Price (in dollars per share) \| $ / shares	$ 52.50
Option Outstanding, Number Of Options (in shares)	4,383
Option Exercisable ,Weighted Average Remaining Life In Years (Year)	1 year 182 days
Option Exercisable, Number Of Options (in shares)	4,383
Exercise Price Range Three [Member]
Option Outstanding, Exercise Price (in dollars per share) \| $ / shares	$ 70.26
Option Outstanding, Number Of Options (in shares)	3,449
Option Exercisable ,Weighted Average Remaining Life In Years (Year)	3 years 182 days
Option Exercisable, Number Of Options (in shares)	3,449
Exercise Price Range Four [Member]
Option Outstanding, Exercise Price (in dollars per share) \| $ / shares	$ 420
Option Outstanding, Number Of Options (in shares)	565
Option Exercisable ,Weighted Average Remaining Life In Years (Year)	2 years 146 days
Option Exercisable, Number Of Options (in shares)	565
Exercise Price Range Five [Member]
Option Outstanding, Exercise Price (in dollars per share) \| $ / shares

Note 7 - Incentive Stock Plan (Details Textual) - shares	Dec. 31, 2018	Jan. 31, 2018	Mar. 31, 2015	Mar. 31, 2014
2014 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized				50,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	750,103
2015 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized			85,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	142,244
2018 EIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		15,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	13,952,161

Note 8 - Office Lease (Details Textual) - USD ($)	12 Months Ended
Note 8 - Office Lease (Details Textual) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Operating Leases, Rent Expense, Total	$ 23,298	$ 31,560
Operating Leases, Rent Expense, Monthly	$ 1,980

Note 9 - Related Party Transactions (Details Textual) - USD ($)					1 Months Ended	3 Months Ended	12 Months Ended			24 Months Ended
	Nov. 15, 2017	Jun. 21, 2017	Mar. 30, 2017	Mar. 21, 2017	Nov. 30, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Apr. 26, 2016	Feb. 24, 2016
Stock Issued During Period, Value, Share-based Compensation, Gross	$ 714,719				$ 714,719
Notes Payable, Related Parties							$ 1,702,300	$ 1,386,856		$ 1,702,300
Proceeds from Related Party Debt							183,854	596,661
Debt Instrument, Interest Rate, Stated Percentage											4.75%
Interest Payable, Current							26,051	22,984		26,051
Stock Issued During Period, Value, New Issues								750,000
Private Placement [Member]
Stock Issued During Period, Value, New Issues	$ 750,000
Fourteen Percent Term Loan Due June 2018, Two [Member]
Notes Payable, Related Parties							$ 621,500	$ 596,500		$ 621,500
Debt Instrument, Interest Rate, Stated Percentage							14.00%	14.00%		14.00%
Fourteen Percent Term Loan Due June 2019, Two [Member]
Interest Payable, Current							$ 187,238			$ 187,238
Interest Expense, Debt, Total							84,901	$ 81,729
Fourteen Percent Term Loan Due June 2018, Three [Member]
Notes Payable, Related Parties							$ 400,941	$ 400,941		$ 400,941
Debt Instrument, Interest Rate, Stated Percentage							14.00%	14.00%		14.00%
Fourteen Percent Term Loan Due June 2019, One and Three [Member]
Interest Expense, Debt, Total							$ 99,615	$ 81,729
Seven Percent Convertible Promissory Note Due March 2019 [Member]
Notes Payable, Related Parties							228,627	98,187		$ 228,627
Seven Percent Convertible Promissory Note Due June 2019 [Member]
Notes Payable, Related Parties							$ 76,239	$ 26,235		$ 76,239
Debt Instrument, Interest Rate, Stated Percentage							7.00%	7.00%		7.00%
Michael A. Kraft [Member]
Related Party Transaction, Expenses from Transactions with Related Party							$ 126,000	$ 177,500
Co-chairman of Board of Directors [Member] \| Fourteen Percent Term Loan Due June 2018, Two [Member]
Notes Payable, Related Parties						$ 440,500	621,500		$ 440,500	$ 621,500
Proceeds from Related Party Debt							$ 181,000
Debt Instrument, Interest Rate, Stated Percentage							14.00%			14.00%		14.00%
Co-chairman of Board of Directors [Member] \| Seven Percent Convertible Promissory Note Due June 2019 [Member]
Debt Instrument, Interest Rate, Stated Percentage		7.00%
Debt Instrument, Face Amount		$ 100,000
Debt Instrument, Convertible, Conversion Percentage		4.00%
Mr. Simon Calton [Member] \| Fourteen Percent Term Loan Due June 2018, Three [Member]
Notes Payable, Related Parties						613,825	$ 775,934		613,825	$ 775,934
Proceeds from Related Party Debt									$ 162,109
Mr. Simon Calton [Member] \| Fourteen Percent Term Loan Due June 2019, One and Three [Member]
Interest Payable, Current							$ 238,938			238,938
Mr. Simon Calton [Member] \| Seven Percent Convertible Promissory Note Due March 2019 [Member]
Debt Instrument, Interest Rate, Stated Percentage			7.00%
Debt Instrument, Face Amount			$ 250,000
Debt Instrument, Convertible, Conversion Percentage			8.00%
Mr. Keen [Member] \| Private Placement [Member]
Stock Issued During Period, Shares, New Issues	20,000,000
Stock Issued During Period, Value, New Issues	$ 750,000
Mr. Keen [Member] \| Seven Percent Convertible Promissory Note Due June 2019 [Member]
Debt Instrument, Face Amount		$ 100,000
Debt Instrument, Convertible, Conversion Percentage		4.00%
Vice President of Technology [Member]
Consulting Fee Per Hour						$ 185				$ 194
Payments for Other Fees								$ 58,054
Chief Executive Officer [Member]
Consulting Fee Per Day				$ 1,500
Accrued Bonuses				25,000
Stock Issued During Period, Value, Share-based Compensation, Gross				$ 50,000

Note 10 - Settlement of Accounts Payable (Details Textual) - USD ($)			12 Months Ended
	Jun. 25, 2018	Jun. 16, 2016	Dec. 31, 2018	Dec. 31, 2017	Sep. 01, 2014
Gain (Loss) on Extinguishment of Debt, Total			$ 184,789
Digital Communication Agreement [Member]
Gain (Loss) on Extinguishment of Debt, Total			$ 45,000
Digital Communication [Member]
Accounts Payable, Total					$ 45,000
North Dakota State University Research Foundation [Member]
Gain (Loss) on Extinguishment of Debt, Total	$ 139,789
Debt Instrument, Periodic Payment, Total		$ 139,789

Note 11 - Subsequent Events (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
Note 11 - Subsequent Events (Details Textual) - USD ($)	Apr. 11, 2019	Dec. 31, 2018	Dec. 31, 2017	Feb. 24, 2016	Jun. 01, 2015
Proceeds from Related Party Debt		$ 183,854	$ 596,661
Notes Payable, Related Parties		$ 1,702,300	$ 1,386,856
Carlton James North Dakota Limited [Member] \| Fourteen Percent Term Loan Due June 2019 [Member]
Debt Agreement, Maximum Borrowing Capacity					$ 500,000
Co-chairman of Board of Directors [Member] \| Fourteen Percent Term Loan Due June 2019, Two [Member]
Debt Agreement, Maximum Borrowing Capacity				$ 100,000
Subsequent Event [Member] \| Matthews Kappers [Member]
Stock Issued During Period, Shares, Issued for Services	199,017
Subsequent Event [Member] \| Carlton James North Dakota Limited [Member] \| Fourteen Percent Term Loan Due June 2019 [Member]
Proceeds from Related Party Debt	$ 120,000
Notes Payable, Related Parties	520,941
Subsequent Event [Member] \| Co-chairman of Board of Directors [Member] \| Fourteen Percent Term Loan Due June 2019, Two [Member]
Proceeds from Related Party Debt	25,000
Notes Payable, Related Parties	$ 646,500