G. PATENTS

3 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

G. PATENTS

During the three months ended December 31, 2016 and 2015, no patent impairment charges were recorded. For the three months ended December 31, 2016 and 2015, amortization of patent costs totaled approximately $9,000. The total estimated future amortization expense is as follows:

Nine months ending September 30, 2017	$	27,433
Year ending September 30,
2018		36,379
2019		34,676
2020		31,483
2021		28,183
2022		24,380
Thereafter		64,733
Total	$	247,267