Note 7 - Patents - Summary of Patents (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Patents, cost	$ 1,377,863	$ 1,377,863
Patents, impairment	(1,008,856)	(995,603)
Patents, accumulated amortization	369,007	382,260
Foundation Intellectual Property Patents [Member]
Patents, cost	1,377,863	1,377,863
Patents, impairment	(1,008,856)	(995,603)
Patents, accumulated amortization	$ 369,007	$ 382,260

The accumulated amount of impairment loss recognized resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

No definition available.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

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

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