Note 6 - Intangible Assets

3 Months Ended

Mar. 31, 2012

Intangible Assets Disclosure [Text Block]

Note 6.  Intangible Assets

Identifiable intangible assets consisted of the following as of March 31, 2012 and December 31, 2011:

	March 31, 2012			December 31, 2011
Antimicrobial technology	$	222,187		$	222,187
Licensing agreements		61,391			61,391
Patents, pending and approved		834,301			834,301
Total intangible assets		1,117,879			1,117,879
Less accumulated amortization		(988,525	)		(971,582	)
Intangible assets, net	$	129,354		$	146,297

Amortization expense for intangible assets was $16,943 for each of the three months ended March 31, 2012 and 2011.