Note 2 - Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	For the Three Months Ended					For the Six Months Ended
	June 30, 2022		June 30, 2021			June 30, 2022		June 30, 2021
Total potentially dilutive common shares as of:
Stock options to purchase common stock (Note 8)		6,301,500		6,301,500			6,301,500		6,301,500
Series C Convertible Preferred Stock and related accrued dividends (Note 5)		-		524,736			-		524,736
Series D Convertible Preferred Stock (Note 6)		-		3,628,576			-		3,628,576
Total potentially dilutive common shares		6,301,500		10,454,812			6,301,500		10,454,812
Numerator:
Net income (loss)	$	109,535	$	(158,511	)	$	16,730	$	(162,434	)
Denominator:
Basic Weighted average shares		68,104,957		68,104,957			68,104,957		68,104,957
Effect of dilutive securities:
Series C Convertible Preferred Stock and related accrued dividends (Note 5)		524,736		-			524,736		-
Series D Convertible Preferred Stock (Note 6)		3,628,576		-			3,628,576		-
Denominator for diluted income (loss) per share-adjusted weighted average shares after assumed conversions		72,258,269		68,104,957			72,258,269		68,104,957

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

	For the Three Months Ended						For the Six Months Ended
	June 30, 2022			June 30, 2021			June 30, 2022			June 30, 2021
Customer A		28	%		20	%		18	%		*
Customer B		15	%		16	%		13	%		15	%
Customer C		13	%		19	%		16	%		21	%
Customer D		11	%		13	%		10	%		11	%
Customer E		10	%		13	%		13	%		22	%
Customer F		*			10	%		*			13	%

Schedule of Inventory, Current [Table Text Block]

	June 30,		December 31,
	2022		2021
Raw materials	$	83,429	$	102,444
Finished goods		229,077		156,563
	$	312,506	$	259,007

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

	June 30,		December 31,
	2022		2021
Trade accounts payable	$	171,084	$	162,829
Payroll and related expenses		85,642		42,472
Patent monetization expenses		187,201		162,990
Current operating lease liabilities		37,329		39,909
Deferred revenue		91,232		123,451
Professional and other service fees		154,863		172,712
Total trade accounts payable and other current liabilities	$	727,351	$	704,363