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Note 7 - Patents (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

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

		June 30, 2021
		Cost				Accumulated Amortization				Net
Patents-foundation intellectual property		$	1,377,863			$	(1,071,319	)		$	306,544
Total		$	1,377,863			$	(1,071,319	)		$	306,544

		December 31, 2020
		Cost				Accumulated Amortization				Net
Patents-foundation intellectual property		$	1,377,863			$	(1,048,614	)		$	329,249
Total		$	1,377,863			$	(1,048,614	)		$	329,249

X

- Definition

Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration