Note 10 - Income Taxes (Tables)

12 Months Ended

Sep. 30, 2016

Notes Tables

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	2016			2015			2014
Income (Loss) Before Provision for (Recovery of) Income Taxes	$	1,333,248		$	(122,377	)	$	8,376
Statutory rate		34	%		34	%		34	%
		453,304			(41,608	)		2,848
Permanent differences		1,000			900			1,200
Research and development and other credits - net		(47,400	)		(48,500	)		(46,300	)
Valuation allowance		(3,681,100	)		82,200			44,400
Other		(25,404	)		7,008			(2,148	)
Total recovery of income taxes	$	(3,299,600	)	$	-		$	-

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	2016			2015
Inventories	$	302,600		$	81,500
Bad debts		3,400			3,400
Accrued liabilities		77,700			70,600
Prepaid expense		(8,900	)		(13,400	)
Depreciation and amortization		93,000			46,700
Research and development and other credit carryforwards		2,019,700			1,980,200
Net operating loss carryforward		1,303,000			1,914,300
Directors stock option plan		40,100			40,100
Acquisition costs		-			125,500
		3,830,600			4,248,900
Valuation allowance		(500,000	)		(4,248,900	)
Total	$	3,330,600		$	-

Summary of Operating Loss Carryforwards [Table Text Block]

Tax Year Expires	NOLS		R& D & Other Credits
2018	$	-	$	44,980
2019		-		166,019
2020		-		195,753
2021		-		125,939
2022		-		48,573
2023		-		107,172
2024		-		156,392
2025		-		155,394
2026		-		139,885
2027		-		154,991
2028		-		152,732
2029		1,587,809		68,676
2030		942,727		31,081
2031		358,744		44,712
2032		622,879		59,085
2033		33,807		111,323
2034		186,708		73,198
2035		99,688		76,429
2036		-		107,315
	$	3,832,362	$	2,019,649