G. PATENTS

6 Months Ended

Mar. 31, 2017

Accounting Policies [Abstract]

G. PATENTS

During the six and three months ended March 31, 2017 and 2016, no patent impairment charges were recorded. For the six and three months ended March 31, 2017, amortization of patent costs totaled approximately $19,000 and $10,000, respectively. For the six and three months ended March 31, 2016, amortization of patent costs totaled approximately $18,000 and $9,000, respectively. The total estimated future amortization expense is approximately as follows:

Six months ending September 30, 2017	$	18,308
Year ending September 30,
2018		36,487
2019		34,784
2020		31,590
2021		28,290
2022		24,488
Thereafter		65,267
Total	$	239,214