PATENT COSTS (Tables)

9 Months Ended

Sep. 30, 2020

PATENT COSTS

Schedule of net patent costs

Patent costs may be creditable against future royalty revenues. For each period presented below, net patent costs consisted of:

	September 30,		December 31,
	2020		2019
Patents	$	1,272,625	$	1,272,625
Accumulated amortization		(761,280)		(699,348)
	$	511,345	$	573,277

Schedule of aggregate amortization expense

The  aggregate amortization expense for the remaining three months of 2020 and each of the years below is as follows:

October 1, 2020 – December 31, 2020	$	20,644
2021		65,427
2022		65,427
2023		65,427
2024		65,427
Thereafter		228,993