Note 5 - Intangible Assets (Tables)

12 Months Ended

Mar. 31, 2017

Notes Tables

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	March 31, 2017									March 31, 2016
	Cost		Weighted Average Amortization Period (years)		Accumulated Amortization			Net Carrying Amount		Cost		Weighted Average Amortization Period (years)		Accumulated Amortization			Net Carrying Amount
Patents & Trademarks	$	20,934		15	$	(9,244	)	$	11,690	$	82,702		15	$	(69,616	)	$	13,086
Formulas											25,446		15		(25,446	)		-
Non-Compete Agreement											50,000		7		(50,000	)		-
Customer List											10,000		3		(10,000	)		-
	$	20,934			$	(9,244	)	$	11,690	$	168,148			$	(155,062	)	$	13,086

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

For the fiscal years ended March 31,
2018	$	1,395
2019		1,395
2020		1,395
2021		1,395
Thereafter		6,110
	$	11,690