Statements of Operations - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues
Licenses, royalties and fees	$ 189,400	$ 175,200	$ 571,900	$ 2,005,700
Product and other sales	448,100	386,200	991,100	854,800
Total revenues	637,500	561,400	1,563,000	2,860,500
Cost of revenues
Licenses, royalties and fees	41,400	35,100	98,200	84,300
Product and other sales	166,600	137,900	380,300	323,500
Total cost of revenues	208,000	173,000	478,500	407,800
Gross profit	429,500	388,400	1,084,500	2,452,700
Operating expenses
Research and development	45,200	38,100	122,600	111,300
Sales and marketing	81,000	74,600	224,200	313,200
General and administrative	84,200	73,400	265,200	277,600
Total operating expenses	210,400	186,100	612,000	702,100
Net income from operations	219,100	202,300	472,500	1,750,600
Other income (expenses)
Interest income	4,600	700	7,200	1,400
Interest expense and bank charges	(2,600)	(2,600)	(8,000)	(8,300)
Total other income (expenses)	2,000	(1,900)	(800)	(6,900)
Net income before income taxes	221,100	200,400	471,700	1,743,700
Income taxes	14,300	199,300	30,600	199,300
Net income	$ 206,800	$ 1,100	$ 441,100	$ 1,544,400
Basic and diluted net income per common share	$ 0.00	$ 0.00	$ .01	$ 0.03
Weighted average common shares outstanding
Basic	59,614,698	58,616,716	58,949,377	58,616,716
Diluted	59,990,371	59,012,626	59,322,141	58,977,284