Note 6 - Patents and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

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

	2023
Beginning	$	5,370,878
Additions		—
Disposals		—
Ending		5,370,878
Accumulated amortization		(1,832,420	)
	$	3,538,458

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Years ending December 31,
2025	$	164,895
2026		164,895
2027		164,895
2028		164,895
2029		164,895
Thereafter		2,713,983
	$	3,538,458