Note 6 - Intangible Assets and Goodwill (Tables)

12 Months Ended

Mar. 31, 2016

Notes Tables

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

	March 31, 2016
Tradenames	$	120,000
Patents		1,090,000
		1,210,000
Less accumulated amortization and impairment		(100,888	)
Intangible assets, net	$	1,109,112

Finite-lived Intangible Assets Amortization Expense [Table Text Block]

Year ending March 31,
2017	$	135,111
2018		135,111
2019		135,111
2020		135,111
2021		126,695
Thereafter		441,973
	$	1,109,112