Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenues
Licenses, royalties and fees	$ 793,800	$ 2,242,500
Product and other sales	1,743,600	1,099,200
Total revenues	2,537,400	3,341,700
Cost of revenues
Licenses, royalties and fees	169,100	115,400
Product and other sales	672,600	445,800
Total cost of revenues	841,700	561,200
Gross profit	1,695,700	2,780,500
Operating expenses
Research and development	165,600	153,200
Sales and marketing	329,900	387,300
General and administrative	393,900	369,400
Total operating expenses	889,400	909,900
Net income from operations	806,300	1,870,600
Other income (expenses)
Interest income	11,700	2,900
Interest expense and bank charges	(10,800)	(12,300)
Total other income (expenses)	900	(9,400)
Net income before income taxes	807,200	1,861,200
Income taxes	52,300	205,800
Net income	$ 754,900	$ 1,655,400
Net income per common share
Basic	$ 0.01	$ 0.03
Diluted	$ 0.01	$ 0.03
Weighted average common shares outstanding
Basic	59,443,207	58,616,716
Diluted	59,836,570	58,980,420