Note 7 - Patents

6 Months Ended

Jun. 30, 2020

Notes to Financial Statements

Goodwill and Intangible Assets Disclosure [Text Block]

NOTE

7

 — PATENTS

    

	June 30, 2020
	Cost		Accumulated Amortization			Net
Patents-foundation intellectual property	$	1,377,863	$	(1,022,108	)	$	355,755
Total	$	1,377,863	$	(1,022,108	)	$	355,755

	December 31, 2019
	Cost		Accumulated Amortization			Net
Patents-foundation intellectual property	$	1,377,863	$	(995,603	)	$	382,260
Total	$	1,377,863	$	(995,603	)	$	382,260

Patents are amortized utilizing the straight-line method over estimated useful lives ranging from

3

to

20

years. Amortization expense was approximately

$13,200

 and

$26,500

for both the

three

and

six

months ended

June 30, 2020

and

2019,

respectively.