Note H - Patents (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

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

	December 31, 2022
	Cost		Accumulated Amortization			Net
Patents-foundation intellectual property	$	1,377,863	$	(1,149,907	)	$	227,956
Total	$	1,377,863	$	(1,149,907	)	$	227,956

	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