PATENT COSTS (Tables)

6 Months Ended

Jun. 30, 2018

PATENT COSTS [Abstract]

Net Patent Costs

For each period presented below, net patent costs consisted of:

	June 30, 2018			December 31, 2017
Patents		1,004,502		$	925,016
Accumulated amortization		(561,534	)		(527,023	)
	$	442,968		$	397,993

Estimated Aggregate Future Amortization Expense

The estimated aggregate amortization expense for the remaining six months of 2018 and each of the years below is approximately as follows:

July 1, 2018 - December 31, 2018	$	36,000
2019		69,700
2020		53,700
2021		37,800
2022		37,800
Thereafter		208,000