Note 7 - Patents

6 Months Ended

Jun. 30, 2022

Notes to Financial Statements

Goodwill and Intangible Assets Disclosure [Text Block]

NOTE 7 — PATENTS    

	June 30, 2022
	Cost		Accumulated Amortization			Net
Patents-foundation intellectual property		1,377,863		(1,127,013	)		250,850
Total		1,377,863		(1,127,013	)		250,850

	December 31, 2021
	Cost		Accumulated Amortization			Net
Patents-foundation intellectual property		1,377,863		(1,100,244	)		277,619
Total		1,377,863		(1,100,244	)		277,619

Patents are amortized utilizing the straight-line method over estimated useful lives ranging from 3 to 20 years. Amortization expense was approximately $13,000 and $27,000 for the three and six months ended June 30, 2022, respectively. Amortization expense was approximately $11,000 and $23,000 for the three and six months ended June 30, 2021, respectively The annual amortization expense expected to be recorded for existing intangibles assets for the years 2022 through 2026 and thereafter, is approximately $27,000, $52,000, $34,000, $28,000 and $110,000.