G. PATENTS

9 Months Ended

Jun. 30, 2017

Accounting Policies [Abstract]

G. PATENTS

During the nine and three months ended June 30, 2017 and 2016, no patent impairment charges were recorded. For the nine and three months ended June 30, 2017, amortization of patent costs totaled approximately $30,000 and $11,000, respectively. For the nine and three months ended June 30, 2016, amortization of patent costs totaled approximately $30,000 and $12,000, respectively. The total estimated future amortization expense is approximately as follows:

Three months ending September 30, 2017	$	9,248
Year ending September 30,
2018		36,660
2019		34,957
2020		31,763
2021		28,463
2022		24,661
Thereafter		65,897
Total	$	231,649