5. PATENTS

12 Months Ended

Sep. 30, 2015

Accounting Policies [Abstract]

5. PATENTS

Patents consisted of the following at September 30:

		2015			2014
Patents	$	1,525,791		$	1,517,344
Accumulated amortization		(1,234,227	)		(1,193,756	)
Net Patents	$	291,564		$	323,588

During the years ended September 30, 2015, 2014 and 2013, the Company recorded patent impairment charges of $0, $1,182 and $22,628, respectively, for the net book value of patents abandoned during the year. These amounts are included in general and administrative expenses.  Amortization expense for the years ended September 30, 2015, 2014 and 2013 totaled $40,471, $42,785 and $88,207, respectively. The total estimated future amortization is as follows:

		Years ending September 30,
2016	$	36,547
2017		36,547
2018		36,213
2019		34,510
2020		31,317
Thereafter		116,430
	$	291,564