Statements of Comprehensive Income (unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues
Licenses, royalties and fees	$ 222,500	$ 153,300	$ 552,900	$ 425,000
Product and other sales	90,000	601,500	884,900	1,477,400
Total revenues	312,500	754,800	1,437,800	1,902,400
Cost of revenues
Licenses, royalties and fees	28,300	61,900	124,900	170,200
Product and other sales	75,000	267,400	432,500	716,200
Total cost of revenues	103,300	329,300	557,400	886,400
Gross profit	209,200	425,500	880,400	1,016,000
Operating expenses
Research and development	44,000	40,700	134,300	123,700
Sales and marketing	56,600	90,900	214,000	260,900
General and administrative	122,300	123,800	385,500	383,500
Total operating expenses	222,900	255,400	733,800	768,100
Net income (loss) from operations	(13,700)	170,100	146,600	247,900
Other income (expenses)
Interest income	5,100	4,200	15,200	12,300
Interest expense and bank charges	(500)	(1,300)	(1,700)	(5,900)
Total other income (expenses)	4,600	2,900	13,500	6,400
Net income (loss) before income taxes	(9,100)	173,000	160,100	254,300
Income taxes	(10,200)	9,900	1,700	(32,200)
Net income	$ 1,100	$ 163,100	$ 158,400	$ 286,500
Basic and diluted net income per common share	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Weighted average common shares outstanding
Basic	67,495,055	66,768,023	67,416,519	62,952,473
Diluted	67,495,055	66,893,250	67,416,519	63,069,652