Statements of Operations - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues
Licenses, royalties and fees	$ 107,100	$ 192,000	$ 271,700	$ 382,500
Product and other sales	520,200	324,100	875,900	543,000
Total revenues	627,300	516,100	1,147,600	925,500
Cost of revenues
Licenses, royalties and fees	58,600	31,600	108,300	56,800
Product and other sales	247,200	123,400	448,800	213,700
Total cost of revenues	305,800	155,000	557,100	270,500
Gross profit	321,500	361,100	590,500	655,000
Operating expenses
Research and development	41,900	39,400	83,000	77,400
Sales and marketing	86,000	74,300	170,000	143,200
General and administrative	120,000	86,900	259,700	181,000
Total operating expenses	247,900	200,600	512,700	401,600
Net income from operations	73,600	160,500	77,800	253,400
Other income (expenses)
Interest income	4,300	1,500	8,100	2,600
Interest expense, bank charges and accretion of interest	(2,100)	(2,700)	(4,600)	(5,400)
Total other income (expenses)	2,200	(1,200)	3,500	(2,800)
Net income before income taxes	75,800	159,300	81,300	250,600
Income taxes	5,000	10,400	(42,100)	16,300
Net income	$ 70,800	$ 148,900	$ 123,400	$ 234,300
Basic and diluted net income per common share	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Weighted average common shares outstanding
Basic	61,044,698	58,616,716	61,044,698	58,616,716
Diluted	61,605,985	58,973,280	61,577,129	58,988,005