Note 3 - Patents, net (Tables)

12 Months Ended

Dec. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

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

	2013			2012
Patents	$	173,488		$	158,429
Less: accumulated amortization		(80,449	)		(64,329	)
Patents, net	$	93,039		$	94,100

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

2014	$	16,376
2015		16,376
2016		12,525
2017		12,525
2018		11,162
thereafter		24,075
Total expense	$	93,039