Note 6 - Intangible Assets

6 Months Ended

Jun. 30, 2012

Intangible Assets Disclosure [Text Block]

Note 6.  Intangible Assets

Identifiable intangible assets consisted of the following as of June 30, 2012 and December 31, 2011:

	June 30, 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		(1,005,467	)		(971,582	)
Intangible assets, net	$	112,412		$	146,297

Amortization expense for intangible assets was $16,942 during each of the three months ended June 30, 2012 and 2011, and was $33,885 during each of the six months ended June 30, 2012 and 2011.