Note 17 - Patents and Other Intangibles (Tables)

6 Months Ended

Jun. 30, 2012

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

	June 30, 2012							December 31, 2011
	Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Patents	$	1,465,834	$	(431,708	)	$	1,034,126	$	1,179,883	$	(377,073	)	$	802,810
Deferred Patents		980,050		--			980,050		1,217,648		--			1,217,648
Trademarks		--		--			--		144,226		(144,226	)		--
	$	2,445,884	$	(431,708	)	$	2,014,176	$	2,541,757	$	(521,299	)	$	2,020,458

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

2012	$	109,000
2013		122,000
2014		122,000
2015		121,000
2016		119,000
	$	593,000