Note 5 - Intangible Assets (Tables)

3 Months Ended

Jun. 30, 2013

Disclosure Text Block [Abstract]

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

	June 30, 2013								March 31, 2013
	Cost		Weighted Average Amortization Period (years)	Accumulated Amortization			Net Carrying Amount		Cost		Weighted Average Amortization Period (years)	Accumulated Amortization			Net Carrying Amount
Patents & Trademarks	$	82,702	15	$	(64,822	)	$	17,880	$	82,702	15	$	(64,369	)	$	18,333
Formulas		25,446	15		(6,715	)		18,731		25,446	15		(6,291	)		19,155
Non-Compete Agreement		50,000	7		(34,524	)		15,476		50,000	7		(32,738	)		17,262
Customer List		10,000	3		(10,000	)		-		10,000	3		(10,000	)		-
	$	168,148		$	(116,061	)	$	52,087	$	168,148		$	(113,398	)	$	54,750

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

2014	$	8,166
2015		10,778
2016		6,068
2017		3,092
2018		3,092
Thereafter		20,891
	$	52,087