0001437749-21-005962 | 10-K | XBRL Viewer

Document And Entity Information - USD ($)	12 Months Ended
Document And Entity Information - USD ($)	Dec. 31, 2020	Mar. 12, 2021	Jun. 30, 2020
Document Information [Line Items]
Entity Registrant Name	CORETEC GROUP INC.
Entity Central Index Key	0001375195
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 Interactive Data Current	Yes
Entity Common Stock, Shares Outstanding (in shares)		239,267,102
Entity Public Float			$ 6,217,446
Entity Shell Company	false
Document Type	10-K
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false

Consolidated Balance Sheets - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash	$ 22,219	$ 58,149
Prepaid expenses	179,963	88,821
Total current assets	202,182	146,970
Property and equipment, net		126
Other assets:
Net Book Value	1,059,026	1,139,255
Goodwill	166,000	166,000
Deposits-other	18,946	3,575
Total other assets	1,243,972	1,308,830
Total Assets	1,446,154	1,455,926
Current liabilities:
Notes payable	46,580	39,138
Accounts payable and accrued expenses	396,019	615,815
Total current liabilities	442,599	654,953
Long term debt, net	266,598	120,508
Total Liabilities	709,197	775,461
Stockholders' equity:
Preferred stock, Series A convertible, $0.0002 par value, 500,000 shares authorized; 345,000 shares issued and outstanding at December 31, 2020 and 2019	69	69
Common stock $0.0002 par value, 1,500,000,000 shares authorized; 213,751,145 and 193,521,506 shares issued and outstanding at December 31, 2020 and 2019, respectively	42,750	38,704
Additional paid-in capital	8,033,313	6,135,885
Accumulated deficit	(7,339,175)	(5,494,193)
Total Stockholders' Equity	736,957	680,465
Total Liabilities and Stockholders' Equity	$ 1,446,154	$ 1,455,926

Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2020	Dec. 31, 2019
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)	213,751,145	193,521,506
Common stock, shares outstanding (in shares)	213,751,145	193,521,506

Consolidated Statements of Operations - USD ($)	12 Months Ended
Consolidated Statements of Operations - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Income:
Revenue
Expenses:
Research and development	151,864	148,875
General and administrative	1,029,136	1,418,203
Interest	665,232	287,307
Total expenses	1,846,232	1,854,385
Other income	1,250
Net loss	$ (1,844,982)	$ (1,854,385)
Loss per share:
Basic and diluted (in dollars per share)	$ (0.009)	$ (0.026)
Weighted average shares outstanding, basic and diluted (in shares)	202,680,171	70,919,722

Consolidated Statements of Changes in Stockholders' Equity (Deficiency) - USD ($)	Preferred Stock [Member] Series A Preferred Stock [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, 2018	345,000		68,474,520
Balance at Dec. 31, 2018	$ 69		$ 13,695	$ 2,166,745	$ (3,639,808)	$ (1,459,299)
Debentures converted to common stock (in shares)			91,788,776
Notes payable converted to common stock			$ 18,358	1,999,077		2,017,434
Common stock issued for liabilities (in shares)			472,486
Common stock issued for liabilities			$ 94	18,960		19,054
Common stock issued for interest and accrued interest (in shares)			31,542,031
Common stock issued for interest and accrued interest			$ 6,308	687,616		693,924
Common stock issued for services (in shares)			1,243,693
Common stock issued for services			$ 249	39,557		39,806
Beneficial conversion feature of notes payable				281,837		281,837
Warrants issued				60,593		60,593
Options issued for compensation and services				881,500		881,500
Net loss					(1,854,385)	(1,854,385)
Balance (in shares) at Dec. 31, 2019	345,000		193,521,506
Balance at Dec. 31, 2019	$ 69		$ 38,704	6,135,885	(5,494,193)	680,465
Debentures converted to common stock (in shares)		166,667	16,727,920
Notes payable converted to common stock			$ 3,346	546,654		550,000
Common stock issued for liabilities (in shares)			337,353
Common stock issued for liabilities			$ 67	11,403		11,470
Common stock issued for services (in shares)			1,364,366
Common stock issued for services			$ 273	61,704		61,977
Beneficial conversion feature of notes payable				1,049,826		1,049,826
Warrants issued				135,705		135,705
Options issued for compensation and services				92,496		92,496
Net loss					(1,844,982)	$ (1,844,982)
Exchange of stock options for common stock (in shares)			1,800,000			1,800,000
Exchange of stock options for common stock			$ 360	(360)
Balance (in shares) at Dec. 31, 2020	345,000		213,751,145
Balance at Dec. 31, 2020	$ 69		$ 42,750	$ 8,033,313	$ (7,339,175)	$ 736,957

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended		67 Months Ended
Consolidated Statements of Cash Flows - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020
Cash Flows from Operating Activities
Net loss	$ (1,844,982)	$ (1,854,385)	$ (7,339,175)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	126	756
Amortization - patents	80,229	80,229
Amortization - debt discount	572,091	55,839
Options issued for services	92,496	765,631
Common stock issued for services	61,977	39,806
Common stock issued for interest		225,664
Change in:
Prepaid expenses	(91,142)	(52,844)
Deposits	(15,371)
Accounts payable and accrued liabilities	(208,326)	126,845
Net cash used in operating activities	(1,352,902)	(612,459)
Cash Flows from Financing Activities
Payments on notes payable	(69,709)	(117,129)
Proceeds from debt and warrants issued	1,386,681	806,503
Payments on debt issue cost		(22,767)
Net cash provided by financing activities	1,316,972	666,607
Net change in cash	(35,930)	54,148
Cash, beginning of period	58,149	4,001
Cash, end of period	22,219	58,149	$ 22,219
Supplemental Disclosure of Cash flow Information
Cash paid during the period for interest	84,366	50,237
Non-Cash Financing Activities
Notes payable converted to common stock	550,000	2,017,434
Stock options exchanged for common stock	360
Options issued for accounts payable		115,869
Common stock issued to satisfy liabilities	11,470	487,315
Recognition of beneficial conversion feature	$ 1,049,826	$ 281,837

Note 1 - Business and Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2020

Notes to Financial Statements

Business Description and Accounting Policies [Text Block]

Note

–

Business and 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”), is a wholly owned subsidiary of the Group (collectively the “Company”). The Company 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.

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, 2020

and

2019

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

Reclassification

Certain amounts in the prior period year balance sheet and statement of operations have been reclassified to conform to the presentation of the current year. These reclassifications were immaterial and had

effect on the previously reported net loss.

Property and Equipment

Property and equipment is 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.

Patents

The Company acquired patents valued at

$1,400,000

in conjunction with the reverse acquisition discussed in Note

As these intangible assets have finite lives based on the patents' expiration dates, they 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.

Impairment of Long-Lived Assets

Long-lived assets, such as property and equipment and patents, 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 rates, embedded instruments and conversion discounts. The carrying value approximates fair value after taking into consideration the liability's characteristics.

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,
	2020		2019
Options		20,212,174		20,716,557
Warrants		2,190,000		570,000
Series A convertible preferred stock		115,000		115,000
Convertible debt		38,753,799		14,448,285
Total potentially dilutive shares		61,270,973		35,849,842

Research and Development

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

$152,000

and

$149,000

for the years ended

December 31, 2020

and

2019,

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 2017,

the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("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 liabilities following the procedure that would be required in determining the fair value of assets acquired and liabilities assumed in a business combination. Instead, an entity should measure goodwill impairment and test by comparing the fair value of a reporting unit with its carrying amount. The Company adopted this standard effective

January 1, 2020

and will apply the standard on a prospective basis. The adoption of this standard did

not

have a material impact on its consolidated financial position and results of operations.

August 2020,

the FASB issued ASU

2020

06,

Debt with Conversion and Other Options (Subtopic

470

) and Derivatives and Hedging

—

Contracts in Entity

s Own Equity (Subtopic

815

This ASU simplifies the accounting for convertible instruments. The guidance removes certain accounting models which separate the embedded conversion features from the host contract for convertible instruments. As a result, after adopting ASU

2020

06,

the Company will

longer separately present the embedded conversion feature of its convertible debt within stockholders' equity and interest expense is expected to decrease due to the elimination of the related debt discount amortization. ASU

2020

is effective for the Company in the

first

quarter of

2024,

with early adoption permitted in the

first

quarter of

2021

and

may

be adopted using either a full or modified retrospective approach. The Company intends to adopt ASU

2020

under the modified retrospective approach for the

2021

fiscal year effective

January 1, 2021.

Adoption is expected to result in an approximate

$989,000

decrease in additional paid in capital from the derecognition of the beneficial conversion feature,

$863,000

increase in long term debt from the derecognition of the discount associated with the beneficial conversion feature and

$126,000

decrease to the opening balance of accumulated deficit, representing the cumulative interest expense recognized related to the amortization of the beneficial conversion feature. The adoption and financial adjustments will be included in the Company's next reporting period.

Note 2 - Recent Capital Financing and Management's Plans	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Substantial Doubt about Going Concern [Text Block]	Note 2 – Recent Capital Financing and Management ' s Plans The Company has realized a cumulative net loss of $7,339,175 for the period from inception ( June 2, 2015) to December 31, 2020, negative working capital of $240,417 and no revenues. As of December 31, 2020, these conditions raised substantial doubt about the Company's ability to continue as a going concern for a year following the balance sheet date of these consolidated financial statements. As of December 31, 2020, the Company had 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 depended on the Company's capital raising efforts to fund the development of its planned products. As a result of the securities purchase agreement and capital raise of $6,000,000 subsequent event to December 31, 2020 ( see Note 9 ), management believes that the Company has sufficient capital commitments to fund the development of its planned products and to pay operating expenses for a period of more than one year following the issuance of these consolidated financial statements. Consequently, the substantial doubt about the Company's ability to continue as a going concern has been alleviated. Management is committed to utilizing this capital to expand and accelerate the development of its CHS technology, while scaling business functions and appropriately adding resources necessary for future growth.

Note 3 - Property and Equipment

12 Months Ended

Dec. 31, 2020

Notes to Financial Statements

Property, Plant and Equipment Disclosure [Text Block]

Note

–

Property and Equipment

Property and equipment consist of the following:

	December 31, 2020		December 31, 2019
Furniture and Fixtures	$	-	$	13,286
Less: Accumulated Depreciation		-		13,160
Totals	$	-	$	126

Depreciation expense amounted to

$126

and

$756

for the years ended

December 31, 2020

and

2019,

respectively. The Company moved headquarters from Tulsa, OK to Ann Arbor, MI during

June 2020.

At that time, the Company sold all furniture and reported a gain on sale of assets of

$1,250.

Note 4 - Patents

12 Months Ended

Dec. 31, 2020

Notes to Financial Statements

Intangible Assets Disclosure [Text Block]

Note

–

Patents

The following table sets forth patents:

Patents	December 31, 2020			December 31, 2019
Gross Carrying Amount	$	1,400,000		$	1,400,000
Accumulated Amortization		(340,974	)		(260,745	)
Net Book Value	$	1,059,026		$	1,139,255

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 5 - Debt

12 Months Ended

Dec. 31, 2020

Notes to Financial Statements

Debt Disclosure [Text Block]

Note

–

Debt

Notes payable and long-term debt consists of the following:

	December 31,			December 31,
	2020			2019
Notes payable:
6.3% Insurance premium finance agreement due July 2020	$	-		$	39,138
3.8% Insurance premium finance agreement due June 2021		46,580			-
Total notes payable	$	46,580		$	39,138

Long term debt:
10% Promissory note due January 2024		1,275,000			475,000
Less:
Beneficial conversion feature		(862,775	)		(273,422	)
Warrants issued		(106,167	)		(59,108	)
Debt issue costs		(39,460	)		(21,962	)
Net long term debt	$	266,598		$	120,508

3.8%

Insurance premium finance agreement, due

June 2021

The Company entered into an insurance financing agreement in

August 2020

totaling

$77,151.

The monthly payments under the agreement are due in

ten

installments of

$7,849.

The Company made the

first

installment payment in

September 2020.

6.3%

Insurance premium finance agreement due

July 2020

The Company entered into an insurance financing agreement in

September 2019

totaling

$61,503.

The agreement was due in

eleven

installments of

$5,591

through

July 2020.

The Company paid the balance due of

$39,138

during the year ended

December 31, 2020.

4.75%

Convertible debenture due

September

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

September 30, 2019

and warrants to buy

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

$114,450

per share. 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. On

October

15,2019,

the Company paid the balance due on the debenture of

$63,675

along with the accrued interest due of

$26,065.

10%

Promissory note due

January 2024,

net

October 4, 2019,

the Company entered into a Credit Agreement and related Promissory Note with Diversified Alpha Fund of Navigator Global Fund Manager Platform SPC (DAF), the Lender. DAF is a segregated portfolio fund of Navigator Global Fund Manager Platform SPC. DAF is managed and controlled by Mollitium Investment Management (Mollitium). Mollitium utilizes Diversified Global Investment Advisors Ltd. (DGIA) to act in an advisory role. DGIA maintains an Investment Committee to support the services to Mollitium. Simon Calton serves as part of this

five

-member investment committee and in accordance with the investment committee's guidelines, Mr. Calton does

not

participate in matters or voting that pertain to the Company due to his conflict of interest. Investment advice provided by DGIA to Mollitium are recommendations only and the final decision on actions are the responsibility of Mollitium. Carlton James Global Management, Ltd (CJGM) serves as a distributer of investments by introducing funds available to the market of which DAF is included in CJGM's group of funds. Compensation to CJGM occurs when investments are made into funds that they introduce. CJGM is part of the Carlton James Group of which Mr. Calton is CEO.

The

10%

Promissory Note, in a principal amount of

$2,500,000,

is due

February 15, 2024

and has attached warrants to subscribe for and purchase

3,000,000

shares of common stock at an exercise price of

$0.052

per share. Under the terms of the Credit Agreement, DAF will fund the Promissory Note in

sixteen

(

) tranches in amounts of

$125,000

and

$175,000

per month beginning in

October 2019.

The funding of the Promissory Note is at the discretion of DAF and

may

differ from the planned schedule. As of

December 31, 2020,

DAF has advanced

$1,825,000

with the remaining

$675,000

to be funded in

2021.

Interest is accrued monthly and paid in advance for the

first

months and thereafter principal and interest payments shall be paid monthly in equal amounts, amortized over a

-month period.

Under the terms of the Credit Agreement, DAF has the right to elect to convert all or part of the Promissory Note at a price equal to

seventy

percent (

70%

) of the average closing price of the Company's common stock as reported on the over-the-counter quotation system on the OTC Markets during the

fifteen

(

) calendar days prior to the loan closing date of

October 4, 2019,

which calculates to

$0.0329

per share.

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. Given the terms and related-party nature of the agreement, the commitment date was determined to be the date the funds are advanced to the Company and is limited to the funding value less other debt discounts (see below). A debt discount of

$1,049,825

and

$281,837

was recorded, with a corresponding credit to additional paid-in capital, for the beneficial conversion feature for the years ended

December 31, 2020

and

2019,

respectively. The debt discount is amortized over the life of the debt relative to unconverted debt. A debt discount of

$175,506

and

$8,415

was amortized to interest expense during the years ended

December 31, 2020

and

2019.

Under the terms of the Credit Agreement, warrants to subscribe for and purchase

3,000,000

shares of common stock at an exercise price of

$0.052

per share were issued to DAF. The warrants will be issued in amounts of

150,000

and

210,000

per month as the advance is received during the funding period. In the event that funding advances deviate from the planned schedule then warrants will be issued pro-rata at

1.2

warrants for every

of funding. Warrants granted under the terms of the DAF Credit Agreement as of

December 31, 2020

and

2019

were

2,190,000

and

570,000,

respectively. The estimated value of the warrants granted monthly, with each advance, is calculated using the Black-Scholes option pricing model. The resulting estimated value of the warrant is used to proportionally allocate the fair value of the debt advance and the fair value of the warrants. The allocated cost of the warrants amounted to

$135,706

and

$60,593

for the years ended

December 31, 2020

and

2019,

respectively, and is being amortized over the life of the debt with

$28,216

and

$1,485

of allocated costs amortized during the years ended

December 31, 2020

and

2019,

respectively.

Additionally, under the terms of the Credit Agreement, the Company agreed to pay a commitment fee of

of each advance and reimburse DAF for certain expenses in connection with the preparation, interpretation, performance and enforcement of the Credit Agreement. Those costs amounted to

$42,000

and

$22,767

during the years ended

December 31, 2020

and

2019,

respectively, and are being amortized over the life of the debt with

$9,034

and

$805

amortized during the years ended

December 31, 2020

and

2019,

respectively.

March 31, 2020,

under the terms of the Credit Agreement, DAF converted

$300,000

of the principle of the Promissory Note into

9,129,136

shares of common stock at

$0.0329

per share. A related charge of

$130,370

of the beneficial conversion feature was made to interest expense along with debt issue related charges of

$25,523

for the warrants and

$8,123

for the deferred cost at the time of the conversion.

October 30, 2020,

under the terms of the Credit Agreement, DAF converted

$250,000

of the principle of the Promissory Note into

7,598,784

shares of common stock at

$0.0329

per share. A related charge of

$156,265

of the beneficial conversion feature was made to interest expense along with debt issue related charges of

$34,912

for the warrants and

$5,796

for the deferred cost at the time of the conversion.

Conversion of related party loans and convertible debentures to common stock

December 27, 2019,

the Company issued

123,330,807

shares of Common Stock of the Company upon the conversion of debt held by certain Legacy Holders, which consists substantially of the Company's Co-Chairmen, Victor Keen and Simon Calton. The total outstanding Legacy Debt converted was

$2,711,359,

which consisted of

$2,017,435

in outstanding principal and

$693,924

in accrued interest. The Legacy Debt was converted at conversion prices of

$0.022

per share.

14%

Term loan due

December 2019,

related party

April 18, 2016,

the Company entered into an unsecured loan agreement whereby Carlton James Ltd ("CJL”), a company owned by Mr. Simon Calton, a director of the Company, agreed to provide the Company a loan facility of up to

$100,000.

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

1.167%

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

September 30, 2019

and subsequently extended to

December 31, 2019.

CJL had advanced

$374,993

(

$274,993

in excess of the facility) on the loan as of

September 30, 2019.

During

2017,

CJL agreed that the excess amount funded and any future funding under the loan would be done on the same terms and conditions as the original note. The loan and accrued interest were a part of the Legacy Debt and effective

November 30, 2019,

the loan and accrued interest were retired

December 27, 2019.

14%

Term loan due

December 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 accrued interest on the outstanding unpaid balance at the rate of

1.167%

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

September 30, 2019

and subsequently extended to

December 31, 2019.

Keen had advanced

$756,500

(

$456,500

in excess of the facility) on the loan through

November 30, 2019.

During

2017,

Keen agreed that the excess amount funded and any future funding under the loan will be done on the same terms and conditions as the original note. The loan and accrued interest were a part of the Legacy Debt and effective

November 30, 2019,

the loan and accrued interest were retired on

December 27, 2019.

14%

Term loan due

December 2019,

related party

June 1, 2015,

Coretec obtained a

$500,000

revolving note agreement with CJL. Coretec accrued the interest on the outstanding balance at the rate of

1.167%

per month. CJL had advanced

$535,941

on the loan (

$35,941

in excess of the facility) through

November 30, 2019.

During

2019,

CJL agreed that the excess amount funded and any future funding under the loan would be done on the same terms and conditions as the original note. Outstanding borrowings were secured by substantially all assets of the Company. The note was due on

September 30, 2019

and subsequently extended to

December 31, 2019.

The loan and accrued interest were a part of the Legacy Debt and effective

November 30, 2019,

the note and accrued interest were retired on

December 27, 2019.

Convertible promissory note due

December 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,

subsequently extended to

December 31, 2019.

The promissory note automatically converted into

eight

percent (

) of the fully diluted outstanding shares of common stock 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 was 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 was amortized over the original life of the debt and

$21,373

was amortized during the year ended

December 31, 2019.

The note and accrued interest were a part of the Legacy Debt retired on

December 27, 2019.

Convertible promissory note due

December 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

and subsequently extended to

December 31, 2019.

The promissory note automatically converted into

four

percent (

) of the fully diluted outstanding shares of common stock 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

$100,000

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

$23,761was

amortized during the year ended

December 31, 2019.

The note and accrued interest were a part of the Legacy Debt retired

December 27, 2019.

Note 6 - Common Stock, Preferred Stock, Warrants and Options

12 Months Ended

Dec. 31, 2020

Notes to Financial Statements

Stockholders' Equity Note Disclosure [Text Block]

Note

–

Common Stock, Preferred Stock, Warrants and Options

Common Stock

December 27, 2019,

the Company issued

123,330,807

shares of Common Stock of the Company upon the conversion of debt held by certain Legacy Holders (see Note

June 8, 2020,

the Board of Directors consented to a share exchange agreement with holders of

21,500,000

options awarded on

August 7, 2019.

The agreement allows for holders to exchange their options for rule

144

common stock at an exchange rate of

0.6

shares per

option. Since the execution of the option exchange agreement

3,000,000

options have been exchanged for

1,800,000

shares of common stock.

October 22, 2020,

the Board of Directors consented to satisfying accrued liabilities of vendors by issuing

common stock from the

2018

Equity Incentive Plan from

August 26, 2020

through

September 1, 2021.

The number of shares issued to satisfy a liability was determined by the average closing price for the

fifteen

(

) days prior to conversion at a discount rate of

50%

to that

fifteen

(

) day average. The stock issuance, in lieu of cash payment, requires written approval of the Chief Executive Officer. During the year ended

December 31, 2020,

1,701,719

shares were issued to satisfy

$73,107

of vendor accrued liabilities and services.

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 Company We have

not

paid any cash or stock dividends to the holders of our Series A Preferred Stock. Dividends in arrears totaled approximately

$148,000

and

$128,000

for the years ended

December 31, 2020

and

2019,

respectively. 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 Volume-Weighted Average Price (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.

Warrants

Warrants to subscribe for and purchase up to

3,000,000

shares of common stock at an exercise price of

$0.052

per share were included under the terms of the DAF Credit Agreement. The warrants will be issued in amounts of

150,000

and

210,000

per month during the funding period. In the event that funding advances deviate from the planned schedule then warrants will be issued pro-rata at

1.2

warrants for every

of funding. Warrants granted under the terms of the DAF Credit Agreement as of

December 31, 2020

and

2019

total

2,190,000

and

570,000,

respectively. The estimated value of the warrants granted monthly, with each advance, is calculated 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 warrant is based on historical exercise behavior and expected future experience. The resulting estimated value of the warrant is used to proportionally allocate the fair value of the debt advance and the fair value of the warrants.

As of

December 31, 2018,

Golden State had warrants outstanding to purchase

shares of common stock at a price of

$114,450

per share which expired

December 31, 2018,

subsequently extended to

September 30, 2019

and cancelled in

October 2019

with the retirement of the Golden State convertible debenture. Global Capital had warrants outstanding to purchase

1,000

shares of common stock at a price of

$0.96

per shares which expired on

March 31, 2019.

Warrants Summary

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

December 31, 2020:

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

Outstanding, December 31, 2019		570,000	$	0.052			$	-
Granted		1,620,000		0.052				-
Outstanding, December 31, 2020		2,190,000		0.052		4.30		-

Options

Stock options for employees, directors or consultants, 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. The Company recognizes compensation expense for awards subject to graded vesting on a straight-line basis. 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.

August 7, 2019

the Company issued

21,500,000

five

(

) year options to purchase common stock of the Company at an exercise price of

$0.041

per share. The estimated fair value of the options was

$881,500.

Michael Kraft, CEO was issued

10,000,000

options, Concordia Financial Group was issued

10,000,000

options, Ramez Elgammal, CTO was issued

1,000,000

options and Ronald Robinson, former CFO, was issued

500,000

options. Mr. Kraft's options were issued for

$90,869

in accrued compensation due him,

$25,000

under the terms of his employment agreement and

$294,132

as additional compensation for his services as CEO. Concordia's, Mr. Elgammal's and Mr. Robinson's options were issued for additional compensation for services during the year ended

December 31, 2019.

The

$881,500

estimated fair value of options to purchase common stock issued in

August 2019

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

337.19%

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

1.52%

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

five

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

June 8, 2020,

the Board of Directors consented to a share exchange agreement with holders of

21,500,000

options awarded on

August 7, 2019.

The agreement allows for holders to exchange their options for rule

144

common stock at an exchange rate of

0.6

shares per

option. The modification of these options did

not

result in any additional compensation because there was

change in the fair value. As of

December 31, 2020,

3,000,000

options have been exchanged for

1,800,000

shares that were issued under the executed exchange agreement.

The Company granted

1,500,000

options during the year ended

December 31, 2020

at an average grant date fair value of

$0.057

determined using the Black-Scholes option pricing model, with

500,000

options vesting immediately and

1,000,000

options vesting over a

two

-year time frame in

four

equal

six

-month periods. The Company recognized

$92,496

of stock option expense related to the options during the year ended

December 31, 2020.

The remaining expense of

$112,554

December 31, 2020,

will be recognized on a straight-line basis over the remaining vesting period of

months.

Options Summary

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

December 31, 2020:

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

Outstanding, December 31, 2019		21,716,557		$	0.076			$	-
Expired		(4,383	)		52.50				-
Exchanged for common stock		(3,000,000	)		0.041				-
Granted		1,500,000			0.057				-
Outstanding, December 31, 2020		20,212,174			0.068		3.69		-

Exercisable, December 31, 2020		19,462,174		$	0.068		3.66	$	-

The following table summarizes the Company's options as of

December 31, 2020:

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

$	0.041		19,000,000		3.62		19,000,000
$	0.065		1,000,000		4.50		250,000
$	0.240		208,160		6.21		208,160
$	70.260		3,449		1.50		3,449
$	420.000		565		0.37		565
Total			20,212,174		3.69		19,462,174

Incentive Stock Plan

January 2018,

the Company established its

2018

Equity Incentive Plan (the

“2018

EIP”). 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

10,534,263

shares available for issuance under the

2018

EIP as of

December 31, 2020.

Note 7 - Commitments	12 Months Ended
Note 7 - Commitments	Dec. 31, 2020
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	Note 7 – Commitments Consulting Agreements The Company entered into a one -year consulting agreement with Michelle Tokarz (“Tokarz”) effective February 10, 2020 and expiring February 9, 2021. Under the terms of the agreement, Tokarz will have the position of Business Development Consultant. Tokarz will be paid an hourly fee of $115 with a maximum of $1,000 per day and shall make up to ten days available to the Company each month. The Company recognized expenses of approximately $52,000 during the year ended December 31, 2020. 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. As of December 31, 2020, the remaining balance of the SRA to be paid under the terms of the agreement is $93,578. As of December 31, 2020, and pursuant to the SRA, Coretec was in arrears on the payment of that obligation. Accordingly, as of December 31, 2020, 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 Coretec does 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. Coretec did not attempt communication or receive communication from NDSU/RF during 2020. 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. Office Lease On June 30, 2020 the Company moved headquarters from Tulsa, Oklahoma to Ann Arbor, Michigan at which time the Company terminated the lease agreement in Tulsa. The Company continued to occupy the office space in Ann Arbor under the lease agreement that was executed on December 3, 2019. The Company signed a one -year lease in Ann Arbor, Michigan commencing January 1, 2020 with an annual rent obligation of $15,120 ( $1,260 per month). Rent expense for the office operating leases was $25,592 and $23,760 and for the years ended December 31, 2020 and 2019, respectively. The Company has renewed the Ann Arbor lease for 2021 under the same terms. Supply Agreement During June 2020, the Company entered into a supply agreement with Evonik Operations GmbH to purchase 500 grams of cyclohexasilane, Si6H12 (CHS) for $185,000. The supply agreement is valid until March 31, 2021. The Company paid Evonik Operations GmbH $92,500 on July 20, 2020, to initiate production of CHS, in accordance with the agreement. Delivery is expected during the months of March and April of 2021, at which time the Company will owe the remaining $92,500.

Note 8 - Related Party Transactions	12 Months Ended
Note 8 - Related Party Transactions	Dec. 31, 2020
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	Note 8 – Related Party Transactions The Company entered into a consulting agreement dated March 20, 2017 with Mr. Michael A. Kraft, who became the Company's CEO. Under the terms of the agreement the Company agreed to compensate Mr. Kraft, $1,500 per day for his commitment to allocate seven days a month (subsequently amended to ten day a month) to the Company and a $25,000 bonus payable in the Company's restricted stock upon occurrence of certain events. Mr. Kraft was issued ten million options during August 2019 for ( 1 ) as compensation for the $25,000 bonus in the consulting agreement, ( 2 ) approximately $91,000 as payment for unpaid consulting fees and, ( 3 ) approximately $294,000 as additional compensation for his consulting services. During the years ended December 31, 2020 and 2019, the Company recognized $180,000 and $144,000 of expense respectively, under the terms of the agreement. Mr. Kraft was owed $51,720 and $95,966 in unpaid consulting fees and out of pocket expenses, which is included in accounts payable and accrued expenses the years ended December 31, 2020 and 2019 respectively. At December 31, 2018 the Company had an aggregate balance of $971,500 of advances due to Mr. Victor Keen, Co-Chairman of the Board of Directors. During the year ended December 31, 2019 Mr. Keen advanced the Company an additional $135,000, such that as of November 30, 2019, an aggregate amount of $1,106,500 was due to Mr. Keen under the terms of certain promissory notes and convertible debentures (“the Notes”) which were included in notes payable – related party (see Note 5 ). The Notes along with accrued interest of $342,292, were converted to common stock on December 27, 2019. Interest expense related to the Notes was $112,969 for the year ended December 31, 2019. At December 31, 2018 the Company had an aggregate balance of $775,934 of advances due to CJL, a company owned by Mr. Simon Calton, a director of the Company, During the years ended December 31, 2019, CJL, advanced an additional $135,000 such that as of November 30, 2019, an aggregate amount of $910,934 was due to CJL under the terms of two loans (“Loans”), which were included in notes payable-related parties (see Note 5 ). The Loans along with accrued interest of $351,633 were converted to common stock on December 27, 2019. Interest expense related to the Loans was $112,695 for the year ended December 31, 2019. The Company entered into a one -year consulting agreement with Matthew Hoffman (“Hoffman”), doing business as, Integrate Growth, LLC, effective May 21, 2020 and expiring May 19, 2021. Under the terms of the agreement, Hoffman held the position of Director of Finance. On June 30, 2020 Ron Robinson, Chief Financial Officer and Judith Keating, Corporate Secretary both retired from the Company. As part of the management transition plan, Hoffman was elevated to Chief Financial Officer and Corporate Secretary on June 30, 2020. Under the terms of the agreement, Hoffman will be paid a monthly fee of $6,000 and shall make up to twenty hours per week available to the Company for each week of each month. The Company recognized $42,000 of consultant expense to Hoffman for the year ended December 31, 2020.

Note 9 - Subsequent Events	12 Months Ended
Note 9 - Subsequent Events	Dec. 31, 2020
Notes to Financial Statements
Subsequent Events [Text Block]	Note 9 – Subsequent Events In January 2021, the Company agreed to settle accrued liabilities in the amount of $41,800 due to multiple vendors for 1,115,961 common shares. This transaction was pursuant to the October 22, 2020 Board of Directors consent to issue S8 common stock from the 2018 Equity Incentive Plan. The number of shares issued to satisfy the liabilities was determined by the average closing price for the fifteen ( 15 ) days prior to conversion at a discount rate of 50% to that fifteen ( 15 ) day average. In January 2021, Ken Evans exchanged 1,500,000 options for 900,000 shares of rule 144 common stock. This transaction was pursuant to the June 8, 2020 consent by the Board of Directors for a share exchange agreement with holders of 21,500,000 options awarded on August 7, 2019. The agreement allows for holders to exchange their options for rule 144 common stock at an exchange rate of 0.6 shares per 1 option. In January 2021, the Company entered into a one -year consulting agreement with Allison Gabrys (“Gabrys”), doing business as, Mears Advisory, LLC, effective February 8, 2021 and expiring February 8, 2022. Under the terms of the agreement, Gabrys will perform services as Chief Marketing Officer Consultant. Gabrys will make 20 hours per week available to the Company with an hourly bill rate of $125. In February 2021, the Company received a gross advance of $225,000 as part of the credit agreement with DAF, bringing the total advances to $2,170,000. The Company and DAF investment manager also agreed to a revised funding schedule of $110,000 tranches to be received in March, April and May of 2021 to complete the $2,500,000 credit agreement. On March 2, 2021, the Company entered into a securities purchase agreement (the “Purchase Agreement”) with a single institutional investor in a private placement to sell (i) 23,500,000 shares of its common stock, (ii) pre-funded warrants to purchase up to an aggregate of 51,500,000 shares of its common stock, and (iii) warrants to purchase up to an aggregate of 82,500,000 shares of its common stock for gross proceeds of approximately $6,000,000. The combined purchase price for one share of common stock and associated Warrant is $0.08 and for one Pre-Funded Warrant and associated Warrant is $0.0799. The sale of the securities under the Purchase Agreement closed on March 5, 2021. The Warrants are exercisable for a period of five and one half years from the date of issuance and have an exercise price of $0.08 per share, subject to adjustment as set forth in the warrants for stock splits, stock dividends, recapitalizations and similar events. The Investor may exercise the warrant on a cashless basis if the shares of common stock underlying the warrant are not then registered pursuant to an effective registration statement. The investor has contractually agreed to restrict its ability to exercise the warrant such that the number of shares of the Company's common stock held by the investor and its affiliates after such exercise does not exceed the beneficial ownership limitation set forth in the warrant which may not exceed initially 4.99% of the Company's then issued and outstanding shares of common stock. The pre-funded warrants have an exercise price of $0.0001 per share, subject to adjustment as set forth in the pre-funded warrants for stock splits, stock dividends, recapitalizations and similar events. The pre-funded warrants will be exercisable immediately and may be exercised at any time until all of the pre-funded warrants are exercised in full. Pursuant to an engagement letter, dated as of February 26, 2021, by and between the Company and H.C. Wainwright & Co., LLC (“Wainwright”), the Company engaged Wainwright to act as the Company's exclusive placement agent in connection with the private placement. The Company agreed to pay Wainwright a cash fee of 8.0% of the gross proceeds raised by the Company in the private placement. The Company also agreed to pay Wainwright (i) a management fee equal to 1.0% of the gross proceeds raised in the private placement; and (ii) $85,000 for non-accountable expenses. In addition, the Company agreed to issue to Wainwright (or its designees) placement agent warrants to purchase a number of shares equal to 8.0% of the aggregate number of shares and pre-funded warrant shares sold under the Purchase Agreement, or warrants to purchase an aggregate of up to 6,000,000 shares. The placement agent warrants generally will have the same terms as the warrants, except they will have an exercise price of $0.10.

Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2020

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.

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.

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, 2020

and

2019

Use of Estimates, Policy [Policy Text Block]

Use of Estimates

Reclassification, Comparability Adjustment [Policy Text Block]

Reclassification

effect on the previously reported net loss.

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

Property and Equipment

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

Patents

The Company acquired patents valued at

$1,400,000

in conjunction with the reverse acquisition discussed in Note

As these intangible assets have finite lives based on the patents' expiration dates, they 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, Policy [Policy Text Block]

Impairment of Long-Lived Assets

Long-lived assets, such as property and equipment and patents, 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

Earnings Per Share, Policy [Policy Text Block]

Basic and Diluted Loss Per Common Share

	December 31,
	2020		2019
Options		20,212,174		20,716,557
Warrants		2,190,000		570,000
Series A convertible preferred stock		115,000		115,000
Convertible debt		38,753,799		14,448,285
Total potentially dilutive shares		61,270,973		35,849,842

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

$152,000

and

$149,000

for the years ended

December 31, 2020

and

2019,

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 2017,

the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("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

January 1, 2020

and will apply the standard on a prospective basis. The adoption of this standard did

not

have a material impact on its consolidated financial position and results of operations.

August 2020,

the FASB issued ASU

2020

06,

Debt with Conversion and Other Options (Subtopic

470

) and Derivatives and Hedging

—

Contracts in Entity

s Own Equity (Subtopic

815

2020

06,

the Company will

2020

is effective for the Company in the

first

quarter of

2024,

with early adoption permitted in the

first

quarter of

2021

and

may

be adopted using either a full or modified retrospective approach. The Company intends to adopt ASU

2020

under the modified retrospective approach for the

2021

fiscal year effective

January 1, 2021.

Adoption is expected to result in an approximate

$989,000

decrease in additional paid in capital from the derecognition of the beneficial conversion feature,

$863,000

increase in long term debt from the derecognition of the discount associated with the beneficial conversion feature and

$126,000

Note 1 - Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

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

	December 31,
	2020		2019
Options		20,212,174		20,716,557
Warrants		2,190,000		570,000
Series A convertible preferred stock		115,000		115,000
Convertible debt		38,753,799		14,448,285
Total potentially dilutive shares		61,270,973		35,849,842

Note 3 - Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Property, Plant and Equipment [Table Text Block]

	December 31, 2020		December 31, 2019
Furniture and Fixtures	$	-	$	13,286
Less: Accumulated Depreciation		-		13,160
Totals	$	-	$	126

Note 4 - Patents (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

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

Patents	December 31, 2020			December 31, 2019
Gross Carrying Amount	$	1,400,000		$	1,400,000
Accumulated Amortization		(340,974	)		(260,745	)
Net Book Value	$	1,059,026		$	1,139,255

Note 5 - Debt (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

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

	December 31,			December 31,
	2020			2019
Notes payable:
6.3% Insurance premium finance agreement due July 2020	$	-		$	39,138
3.8% Insurance premium finance agreement due June 2021		46,580			-
Total notes payable	$	46,580		$	39,138

Long term debt:
10% Promissory note due January 2024		1,275,000			475,000
Less:
Beneficial conversion feature		(862,775	)		(273,422	)
Warrants issued		(106,167	)		(59,108	)
Debt issue costs		(39,460	)		(21,962	)
Net long term debt	$	266,598		$	120,508

- 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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-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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+ Details

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

12 Months Ended

Dec. 31, 2020

Notes Tables

Warrant Activity [Table Text Block]

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

Outstanding, December 31, 2019		570,000	$	0.052			$	-
Granted		1,620,000		0.052				-
Outstanding, December 31, 2020		2,190,000		0.052		4.30		-

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, 2019		21,716,557		$	0.076			$	-
Expired		(4,383	)		52.50				-
Exchanged for common stock		(3,000,000	)		0.041				-
Granted		1,500,000			0.057				-
Outstanding, December 31, 2020		20,212,174			0.068		3.69		-

Exercisable, December 31, 2020		19,462,174		$	0.068		3.66	$	-

Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

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

$	0.041		19,000,000		3.62		19,000,000
$	0.065		1,000,000		4.50		250,000
$	0.240		208,160		6.21		208,160
$	70.260		3,449		1.50		3,449
$	420.000		565		0.37		565
Total			20,212,174		3.69		19,462,174

Note 1 - Business and Summary of Significant Accounting Policies (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2021
Goodwill, Impairment Loss	$ 0	$ 0
Research and Development Expense, Total	151,864	148,875
Additional Paid in Capital, Ending Balance	8,033,313	6,135,885
Retained Earnings (Accumulated Deficit), Ending Balance	(7,339,175)	$ (5,494,193)
Accounting Standards Update 2020-06 [Member] \| Forecast [Member]
Additional Paid in Capital, Ending Balance			$ (989,000)
Long-term Debt, Total			863,000
Retained Earnings (Accumulated Deficit), Ending Balance			$ 126,000
Patents [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 1,400,000
Series B Convertible Preferred Stock [Member]
Stock Issued During Period, Shares, Conversion of Convertible Securities (in shares)	4,760,872
Sale of Stock, Percentage of Ownership after Transaction	65.00%

Note 1 - Business and Summary of Significant Accounting Policies - Antidilutive Securities Excluded From Computation of Earnings Per Share (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Total potentially dilutive shares (in shares)	61,270,973	35,849,842
Options [Member]
Total potentially dilutive shares (in shares)	20,212,174	20,716,557
Warrant [Member]
Total potentially dilutive shares (in shares)	2,190,000	570,000
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)	38,753,799	14,448,285

Note 2 - Recent Capital Financing and Management's Plans (Details Textual) - USD ($)			12 Months Ended		67 Months Ended
	Mar. 05, 2021	Mar. 02, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020
Net Income (Loss) Attributable to Parent, Total			$ (1,844,982)	$ (1,854,385)	$ (7,339,175)
Working Capital Deficit			240,417		240,417
Revenue from Contract with Customer, Including Assessed Tax					$ 0
Private Placement [Member] \| Subsequent Event [Member]
Proceeds from Issuance or Sale of Equity, Total	$ 6,000,000	$ 6,000,000

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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+ Details

Note 3 - Property and Equipment (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Depreciation, Total	$ 126	$ 756
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property		$ 1,250

Note 3 - Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Totals		$ 126
Furniture and Fixtures [Member]
Furniture and Fixtures		13,286
Less: Accumulated Depreciation		13,160
Totals		$ 126

Note 4 - Patents (Details Textual)	Sep. 30, 2016 USD ($)
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 80,000

Note 4 - Patents - Schedule of Patents (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Net Book Value	$ 1,059,026	$ 1,139,255
Patents [Member]
Gross Carrying Amount	1,400,000	1,400,000
Accumulated Amortization	(340,974)	(260,745)
Net Book Value	$ 1,059,026	$ 1,139,255

Note 5 - Debt (Details Textual)										1 Months Ended		3 Months Ended	12 Months Ended			15 Months Ended
Note 5 - Debt (Details Textual)	Oct. 31, 2020 USD ($) $ / shares shares	Mar. 31, 2020 USD ($) $ / shares shares	Dec. 27, 2019 USD ($) $ / shares shares	Oct. 15, 2019 USD ($)	Oct. 04, 2019 USD ($) $ / shares shares	May 24, 2018 USD ($) $ / shares shares	Jan. 08, 2018 USD ($) $ / shares shares	Jun. 21, 2017 USD ($)	Mar. 30, 2017 USD ($)	Aug. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Nov. 30, 2019 USD ($)	Jan. 01, 2019	Apr. 18, 2016 USD ($)	Feb. 24, 2016 USD ($)	Jun. 01, 2015 USD ($)	Nov. 03, 2006 USD ($) $ / shares shares
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares												$ 0.052		$ 0.052	$ 0.052	$ 0.052
Amortization of Debt Discount (Premium)														$ 572,091	$ 55,839
Class of Warrant or Right, Issued Monthly (in shares) \| shares														1,620,000
Conversion from Convertible Debenture to Common Stock [Member]
Debt Conversion, Original Debt, Amount						$ 225	$ 225
Debt Conversion, Converted Instrument, Shares Issued (in shares) \| shares						396,635	244,618
Debt Instrument, Convertible, Conversion Price (in dollars per share) \| $ / shares						$ 0.0006	$ 0.0009
Conversion of DAF Promissory Note into Common Stock [Member]
Debt Conversion, Original Debt, Amount	$ 250,000	$ 300,000
Debt Conversion, Converted Instrument, Shares Issued (in shares) \| shares	7,598,784	9,129,136
Debt Instrument, Convertible, Conversion Price (in dollars per share) \| $ / shares	$ 0.0329	$ 0.0329
Amortization of Debt Discount (Premium)	$ 156,265	$ 130,370
Allocated Cost of Warrants	34,912	25,523
Amortization of Debt Issuance Costs	$ 5,796	$ 8,123
Conversion of Legacy Debt to Common Stock [Member]
Debt Conversion, Original Debt, Amount			$ 2,711,359
Debt Conversion, Converted Instrument, Shares Issued (in shares) \| shares			123,330,807
Debt Instrument, Convertible, Conversion Price (in dollars per share) \| $ / shares			$ 0.022
Debt Conversion, Original Debt, Amount, Principal			$ 2,017,435
Debt Conversion, Original Debt, Amount, Accrued Interest			$ 693,924
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 (in shares) \| shares																						61
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares						$ 114,450	$ 114,450															$ 114,450
Class of Warrant or Right, Exercised During Period (in shares) \| shares						0.2143	0.2143
Proceeds from Warrant Exercises						$ 23,766	$ 24,525
Warrant Issued in Connection With Credit Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) \| shares					3,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares					$ 0.052
Class of Warrant or Right, Number of Warrants Issued Per Dollar in the Event of Funding Deviation (in shares) \| shares					1.2
Class of Warrant or Right, Issued During Period (in shares) \| shares												570,000		2,190,000	570,000	2,190,000
Allocated Cost of Warrants														$ 135,706	$ 60,593
Amortization Expense Associated With Warrants														$ 28,216	1,485
Warrant Issued in Connection With Credit Agreement [Member] \| Minimum [Member]
Class of Warrant or Right, Issued Monthly (in shares) \| shares					150,000
Warrant Issued in Connection With Credit Agreement [Member] \| Maximum [Member]
Class of Warrant or Right, Issued Monthly (in shares) \| shares					210,000
Three Point Eight Percent Insurance Premium Finance Agreement [Member]
Debt Instrument, Interest Rate, Stated Percentage										3.80%				3.80%		3.80%
Debt Instrument, Face Amount										$ 77,151
Debt Instrument, Term (Month)										300 days
Debt Instrument, Periodic Payment, Total										$ 7,849
Six Point Three Percent Insurance Premium Finance Agreement [Member]
Debt Instrument, Interest Rate, Stated Percentage											6.30%
Debt Instrument, Face Amount											$ 61,503
Debt Instrument, Term (Month)											330 days
Debt Instrument, Periodic Payment, Total											$ 5,591
Repayments of Debt														$ 39,138
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
Repayments of Convertible Debt				$ 63,675
Interest Paid, Including Capitalized Interest, Operating and Investing Activities, Total				$ 26,065
Credit Agreement And Note [Member]
Debt Instrument, Interest Rate, Stated Percentage					10.00%									10.00%		10.00%		10.00%
Debt Instrument, Convertible, Conversion Price (in dollars per share) \| $ / shares					$ 0.0329
Debt Agreement, Maximum Borrowing Capacity					$ 2,500,000
Debt Instrument, Number of Tranches					16
Proceeds from Notes Payable, Total														$ 1,825,000
Debt Instrument, Period of Monthly Advance Interest Payments (Month)					1 year
Debt Instrument, Period Following Advance Interest Payments (Month)					3 years
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger					70.00%
Debt Instrument, Convertible, Threshold Trading Days					15
Debt Instrument, Unamortized Discount, Total												$ 281,837		1,049,825	281,837	$ 1,049,825
Amortization of Debt Discount (Premium)														175,506	8,415
Line of Credit Facility, Commitment Fee Percentage					3.00%
Line of Credit Facility, Commitment Fee and Debt-related Expenses to Be Amortized												$ 22,767		42,000	22,767	$ 42,000
Amortization Associated With Commitment Fee														$ 9,034	805
Credit Agreement And Note [Member] \| Forecast [Member]
Proceeds from Notes Payable, Total													$ 675,000
Credit Agreement And Note [Member] \| Minimum [Member]
Debt Instrument, Amount Funded in Each Monthly Tranche					$ 125,000
Credit Agreement And Note [Member] \| Maximum [Member]
Debt Instrument, Amount Funded in Each Monthly Tranche					$ 175,000
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] \| Co-chairman of Board of Directors [Member]
Debt Instrument, Interest Rate, Stated Percentage																				14.00%
Debt Agreement, Maximum Borrowing Capacity																				$ 300,000
Debt Instrument, Interest Rate, Monthly																				1.167%
Fourteen Percent Term Loan Two [Member] \| Victor Keen [Member]
Notes Payable, Related Parties																	$ 756,500
Debt Instrument, Advances in Excess of Facility Limit																	456,500
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 Instrument, Interest Rate, Monthly																					1.167%
Notes Payable, Related Parties																	535,941
Debt Instrument, Advances in Excess of Facility Limit																	$ 35,941
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, Unamortized Discount, Total									$ 250,000
Amortization of Debt Discount (Premium)															21,373
Debt Instrument, Convertible, Conversion Percentage									8.00%
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, Unamortized Discount, Total								$ 100,000
Amortization of Debt Discount (Premium)															$ 23,761
Debt Instrument, Convertible, Conversion Percentage								4.00%

Note 5 - Debt - Schedule of Debt (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2019
Notes payable	$ 46,580	$ 39,138	$ 39,138
Net long term debt	266,598	$ 120,508	120,508
Six Point Zero Five Percent Insurance Premium Finance Agreement, Due July 2019 [Member]
Notes payable			39,138
Three Point Eight Percent Insurance Premium Finance Agreement [Member]
Notes payable	46,580
Credit Agreement And Note [Member]
10% Promissory note due January 2024	1,275,000		475,000
Beneficial conversion feature	(862,775)		(273,422)
Warrants issued	(106,167)		(59,108)
Debt issue costs	$ (39,460)		$ (21,962)

Note 5 - Debt - Schedule of Debt (Details) (Parentheticals)	Dec. 31, 2020	Aug. 31, 2020	Oct. 04, 2019	Jan. 01, 2019
Six Point Zero Five Percent Insurance Premium Finance Agreement, Due July 2019 [Member]
Interest rate	6.30%			6.30%
Three Point Eight Percent Insurance Premium Finance Agreement [Member]
Interest rate	3.80%	3.80%
Credit Agreement And Note [Member]
Interest rate	10.00%		10.00%	10.00%

Note 6 - Common Stock, Preferred Stock, Warrants and Options (Details Textual)						3 Months Ended	7 Months Ended	12 Months Ended		15 Months Ended
	Oct. 22, 2020	Jun. 08, 2020 shares	Dec. 27, 2019 shares	Oct. 04, 2019 $ / shares shares	Aug. 07, 2019 USD ($) $ / shares shares	Dec. 31, 2019 $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2018 $ / shares shares	Jan. 31, 2018 shares
Share Exchange Agreement, Number of Options Authorized (in shares)		21,500,000
Share Exchange Agreement, Exchange Ratio		0.6
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exchanged (in shares)							3,000,000	3,000,000
Stock Issued During Period, Shares, Stock Options Exchanged for Common Shares (in shares)							1,800,000	1,800,000
Preferred Stock, Shares Authorized (in shares)						500,000	500,000	500,000	500,000	500,000
Convertible Preferred Stock, Volume Weighted Average Price Trigger (in dollars per share) \| $ / shares								$ 15
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares						$ 0.052	$ 0.052	$ 0.052	$ 0.052	$ 0.052
Class of Warrant or Right, Issued Monthly (in shares)								1,620,000
Class of Warrant or Right, Outstanding (in shares)						570,000	2,190,000	2,190,000	570,000	2,190,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)					21,500,000			1,500,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share) \| $ / shares					$ 0.041			$ 0.057
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value \| $					$ 881,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) \| $ / shares								$ 0.057
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount \| $							$ 112,554	$ 112,554		$ 112,554
2018 EIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)												15,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)							10,534,263	10,534,263		10,534,263
Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)								500,000
Share-based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)								1,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)								2 years
Share-based Compensation Arrangement by Share-based Payment Award, Vesting Period, Number of Equal Periods								4
Concordia Financial Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)					10,000,000
Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)					10,000,000
Vice President of Technology [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)					1,000,000
Chief Financial Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)					500,000
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exchanged (in shares)								3,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)					5 years
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, Weighted Average Volatility Rate					337.19%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate					1.52%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term (Year)					5 years
Share-based Payment Arrangement, Expense \| $								$ 92,496
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)								1 year 180 days
Options Issued for Accrued Compensation [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value \| $					$ 90,869
Options Issued for Employment Agreement [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value \| $					25,000
Options Issued As Additional Compensation for CEO Services [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value \| $					$ 294,132
Warrant Issued in Connection With Credit Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)				3,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares				$ 0.052
Class of Warrant or Right, Number of Warrants Issued Per Dollar in the Event of Funding Deviation (in shares)				1.2
Class of Warrant or Right, Issued During Period (in shares)						570,000		2,190,000	570,000	2,190,000
Warrant Issued in Connection With Credit Agreement [Member] \| Minimum [Member]
Class of Warrant or Right, Issued Monthly (in shares)				150,000
Warrant Issued in Connection With Credit Agreement [Member] \| Maximum [Member]
Class of Warrant or Right, Issued Monthly (in shares)				210,000
Golden State Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares											$ 114,450
Class of Warrant or Right, Outstanding (in shares)											61
Global Capital Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares											$ 0.96
Class of Warrant or Right, Outstanding (in shares)											1,000
Common Stock [Member]
Stock Issued During Period, Shares, Stock Options Exchanged for Common Shares (in shares)								1,800,000
Stock Issued During Period, Shares, Conversion of Convertible Securities (in shares)								16,727,920	91,788,776
S8 Common Stock [Member]
Common Stock Issued to Satisfy Accrued Liabilities, Number of Trading Days Over which Average Closing Price is Used to Determine Number of Shares	15
Common Stock Issued to Satisfy Accrued Liabilities, Discount Rate Used to Determine Number of Shares	50.00%
Stock Issued During Period, Shares, Satisfaction of Vendor Accrued Liabilities and Services (in shares)								1,701,719
Stock Issued During Period, Value, Satisfaction of Vendor Accrued Liabilities and Services \| $								$ 73,107
Series A Preferred Stock [Member]
Preferred Stock, Shares Authorized (in shares)							500,000	500,000		500,000
Preferred Stock, Par Value, Per Share (in dollars per share) \| $ / shares							$ 0.0002	$ 0.0002		$ 0.0002
Preferred Stock, Stated Value, Per Share (in dollars per share) \| $ / shares							$ 1	$ 1		$ 1
Preferred Stock, Dividend Rate, Percentage								6.00%
Preferred Stock, Amount of Preferred Dividends in Arrears \| $								$ 148,000	$ 128,000
Series A Preferred Stock [Member] \| Common Stock [Member]
Stock Issued During Period, Shares, Conversion of Convertible Securities (in shares)								166,667
Conversion of Legacy Debt to Common Stock [Member]
Debt Conversion, Converted Instrument, Shares Issued (in shares)			123,330,807

Note 6 - Common Stock, Preferred Stock, Warrants and Options - Warrants (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) $ / shares shares
Outstanding, number of warrants (in shares) \| shares	570,000
Outstanding, weighted-average exercise price (in dollars per share) \| $ / shares	$ 0.052
Granted, number of warrants (in shares) \| shares	1,620,000
Granted, weighted-average exercise price (in dollars per share) \| $ / shares	$ 0.052
Outstanding, number of warrants (in shares) \| shares	2,190,000
Outstanding, weighted-average exercise price (in dollars per share) \| $ / shares	$ 0.052
Outstanding, weighted-average remaining life (Year)	4 years 109 days
Outstanding, aggregate intrinsic value \| $

Note 6 - Common Stock, Preferred Stock, Warrants and Options - Option Activity (Details) - USD ($)		7 Months Ended	12 Months Ended
	Aug. 07, 2019	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Exchanged for common stock (in shares)		(3,000,000)	(3,000,000)
Granted, Shares (in shares)	21,500,000		1,500,000
Granted, Weighted Average Exercise Price (in dollars per share)	$ 0.041		$ 0.057
Share-based Payment Arrangement, Option [Member]
Outstanding, Shares (in shares)			21,716,557
Outstanding, Weighted Average Exercise Price (in dollars per share)			$ 0.076
Outstanding, Weighted Average Remaining Life (Year)
Expired, Shares (in shares)			(4,383)
Expired, Weighted Average Exercise Price (in dollars per share)			$ 52.50
Exchanged for common stock (in shares)			(3,000,000)
Exchanged for common stock, Weighted Average Exercise Price (in dollars per share)			$ 0.041
Outstanding, Shares (in shares)		20,212,174	20,212,174	21,716,557
Outstanding, Weighted Average Exercise Price (in dollars per share)		$ 0.068	$ 0.068	$ 0.076
Outstanding, Weighted Average Remaining Life in Years (Year)			3 years 251 days
Outstanding, Aggregate intrinsic value
Exercisable, Shares (in shares)		19,462,174	19,462,174
Exercisable, Weighted Average Exercise Price (in dollars per share)		$ 0.068	$ 0.068
Exercisable, Weighted Average Remaining Life (Year)			3 years 240 days
Exercisable, Aggregate intrinsic value

Note 6 - Common Stock, Preferred Stock, Warrants and Options - Shares Authorized Under Stock Option Plans (Details)	12 Months Ended
	Dec. 31, 2020 $ / shares shares
Option Outstanding, Number Of Options (in shares)	20,212,174
Option Exercisable, Weighted Average Remaining Life In Years (Year)	3 years 251 days
Option Exercisable, Number Of Options (in shares)	19,462,174
Option Exercisable, Number Of Options (in shares)	19,462,174
Exercise Price Range One [Member]
Option Outstanding, Exercise Price (in dollars per share) \| $ / shares	$ 0.041
Option Outstanding, Number Of Options (in shares)	19,000,000
Option Exercisable, Weighted Average Remaining Life In Years (Year)	3 years 226 days
Option Exercisable, Number Of Options (in shares)	19,000,000
Option Exercisable, Number Of Options (in shares)	19,000,000
Exercise Price Range Two [Member]
Option Outstanding, Exercise Price (in dollars per share) \| $ / shares	$ 0.065
Option Outstanding, Number Of Options (in shares)	1,000,000
Option Exercisable, Weighted Average Remaining Life In Years (Year)	4 years 182 days
Option Exercisable, Number Of Options (in shares)	250,000
Option Exercisable, Number Of Options (in shares)	250,000
Exercise Price Range Three [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)	6 years 76 days
Option Exercisable, Number Of Options (in shares)	208,160
Option Exercisable, Number Of Options (in shares)	208,160
Exercise Price Range Four [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)	1 year 182 days
Option Exercisable, Number Of Options (in shares)	3,449
Option Exercisable, Number Of Options (in shares)	3,449
Exercise Price Range Five [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)	135 days
Option Exercisable, Number Of Options (in shares)	565
Option Exercisable, Number Of Options (in shares)	565

Note 7 - Commitments (Details Textual) - USD ($)			1 Months Ended	11 Months Ended	12 Months Ended		13 Months Ended
Note 7 - Commitments (Details Textual) - USD ($)	Jul. 20, 2020	Feb. 10, 2020	Jun. 30, 2017	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Aug. 31, 2016	Apr. 30, 2021	Sep. 30, 2020
Operating Lease, Expense					$ 25,592	$ 23,760
Ann Arbor, Michigan [Member]
Lessee, Operating Lease, Liability, to be Paid, Total				$ 15,120	15,120
Operating Leases, Rent Expense, Monthly					1,260
North Dakota State University Research Foundation [Member]
Reimbursement of Cost Relating to Research, Remaining Balance				93,578	93,578
Evonik Operations GmbH [Member]
Purchase Obligation, Total									$ 185,000
Payments for Research and Development, Supply Agreement	$ 92,500
Evonik Operations GmbH [Member] \| Forecast [Member]
Purchase Obligation, Total								$ 92,500
North Dakota State University Research Foundation [Member]
Reimbursement of Cost Relating to Research, Maximum Amount			$ 190,000				$ 70,000
Increase in Reimbursement of Cost Relating to Research			$ 120,000
Business Development Consultant [Member]
Consulting Agreement, Term (Year)		1 year
Payments for Fee, Hourly				115
Consulting Fee					$ 52,000
Business Development Consultant [Member] \| Maximum [Member]
Consulting Fee Per Day				$ 1,000

Note 8 - Related Party Transactions (Details Textual) - USD ($)				12 Months Ended
	May 21, 2020	Aug. 07, 2019	Mar. 20, 2017	Dec. 31, 2020	Dec. 31, 2019	Nov. 30, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)		21,500,000		1,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value		$ 881,500
Michael A. Kraft [Member]
Related Party Transaction, Expenses from Transactions with Related Party				$ 180,000	$ 144,000
CEO [Member] \| Consulting Fees and Out of Pocket Expenses [Member] \| Accounts Payable and Accrued Liabilities [Member]
Due to Related Parties, Total				51,720	95,966
Victor Keen [Member]
Due to Related Parties, Total						$ 1,106,500	$ 971,500
Proceeds from Related Party Debt					135,000
Interest Payable						342,292
Interest Expense, Related Party					112,969
CJL [Member]
Due to Related Parties, Total						910,934	$ 775,934
Proceeds from Related Party Debt					135,000
Interest Payable						$ 351,633
Interest Expense, Related Party					$ 112,695
Matthew Hoffman [Member]
Related Party Transaction, Expenses from Transactions with Related Party				$ 42,000
Consulting Agreement, Term (Year)	1 year
Consulting Agreement, Monthly Fee	$ 6,000
Chief Executive Officer [Member]
Consulting Fee Per Day			$ 1,500
Accrued Bonuses			$ 25,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)		10,000,000
Chief Executive Officer [Member] \| Options Issued for Employment Agreement [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value		$ 25,000
Chief Executive Officer [Member] \| Options Issued for Accrued Compensation [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value		90,869
Chief Executive Officer [Member] \| Options Issued As Additional Compensation for CEO Services [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value		$ 294,132

Note 9 - Subsequent Events (Details Textual)					1 Months Ended					12 Months Ended
Note 9 - Subsequent Events (Details Textual)	Mar. 05, 2021 USD ($) $ / shares shares	Mar. 02, 2021 USD ($)	Feb. 26, 2021 USD ($) $ / shares shares	Aug. 07, 2019 shares	May 31, 2021 USD ($)	Apr. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Feb. 28, 2021 USD ($)	Jan. 31, 2021 USD ($) shares	Dec. 31, 2020 $ / shares shares	Dec. 31, 2019 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)				21,500,000						1,500,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares										$ 0.052	$ 0.052
Credit Agreement And Note [Member] \| Forecast [Member]
Proceeds from Issuance of Debt \| $					$ 110,000	$ 110,000	$ 110,000
Long-term Debt, Total \| $					$ 2,500,000
Subsequent Event [Member] \| Pre-funded Warrant [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	51,500,000
Class of Warrant or Right, Purchase Price of Warrants or Rights (in dollars per share) \| $ / shares	$ 0.08
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares	$ 0.0001
Subsequent Event [Member] \| Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	82,500,000
Class of Warrant or Right, Purchase Price of Warrants or Rights (in dollars per share) \| $ / shares	$ 0.0799
Warrants and Rights Outstanding, Term (Year)	5 years 182 days
Warrants Ownership Percentage, Maximum Limit	4.99%
Subsequent Event [Member] \| Placement Agent Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)			6,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares			$ 0.10
Warrants, Percent of Outstanding Shares Purchasable by Warrants			8.00%
Subsequent Event [Member] \| Private Placement [Member]
Stock Issued During Period, Shares, New Issues (in shares)	23,500,000
Proceeds from Issuance or Sale of Equity, Total \| $	$ 6,000,000	$ 6,000,000
Subsequent Event [Member] \| Placement Agent Private Placement [Member]
Sale of Equity, Cash Fee, Percent			8.00%
Sale of Equity, Management Fee, Percent			1.00%
Payments of Stock Issuance Costs \| $			$ 85,000
Subsequent Event [Member] \| Credit Agreement And Note [Member]
Proceeds from Issuance of Debt \| $								$ 225,000
Long-term Debt, Total \| $								$ 2,170,000
Subsequent Event [Member] \| Multiple Vendors [Member]
Liabilities Settled, Original Amount \| $									$ 41,800
Stock Issued During Period, Shares, New Issues (in shares)									1,115,961
Subsequent Event [Member] \| Ken Evans [Member]
Stock Issued During Period, Shares, New Issues (in shares)									900,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares)									1,500,000
Share Based Compensation, Exchange Ratio of Shares Per Stock Option									0.6
Subsequent Event [Member] \| Allison Gabrys [Member]
Employment Agreement, Hourly Rate									125