Note N - Patents and Other Intangibles

6 Months Ended

Jun. 30, 2011

Intangible Assets Disclosure [Text Block]

NOTE N – PATENTS AND OTHER INTANGIBLES

Details of intangible assets are summarized as follows:

	June 30, 2011						December 31, 2010
	Cost		Accumulated Amortization		Net		Cost		Accumulated Amortization		Net
Trademarks	$	144,000	$	144,000	$	--	$	144,000	$	142,000	$	2,000
Patents		1,235,000		347,000		888,000		1,440,000		571,000		869,000
Deferred Patents		1,896,000		--		1,896,000		1,784,000		--		1,784,000
Deferred Trademarks		15,000		--		15,000		15,000		--		15,000
	$	3,290,000	$	491,000	$	2,799,000	$	3,383,000	$	713,000	$	2,670,000

Trademarks and patents are all intangible assets with definite useful lives and therefore continue to be amortized in accordance with accounting guidance. Amortization expense amounted to $48,000 and $49,000 for the six months ended June 30, 2011 and June 30, 2010, respectively.  The weighted-average amortization period for all intangible assets  as of June 30, 2011 was approximately 11 years. Future amortization expense on our amortizable intangible assets over the next five years is estimated as follows:

2011 (6 months)	$	47,000
2012		93,000
2013		93,000
2014		93,000
2015		92,000
	$	418,000

During the six months ended June 30, 2011, we wrote-off fully amortized expired patents in the aggregate amount of $270,000.