Note N - Patents and Other Intangibles

9 Months Ended

Sep. 30, 2011

Intangible Assets Disclosure [Text Block]

NOTE N – PATENTS AND OTHER INTANGIBLES

Details of intangible assets are summarized as follows:

	September 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		991,000		349,000		642,000			1,440,000			571,000		869,000
Deferred Patents		1,342,000		--		1,342,000			1,784,000			--		1,784,000
Deferred Trademarks		15,000		--		15,000			15,000			--		15,000
	$	2,492,000	$	493,000	$	1,999,000		$	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 $71,000 and $74,000 for the nine months ended September 30, 2011 and September 30, 2010, respectively.  The weighted-average amortization period for all intangible assets as of September 30, 2011 was approximately 11 years. Future amortization expense on our amortizable intangible assets over the next five years is estimated as follows:

2011 (3 months)	$	21,000
2012		66,000
2013		77,000
2014		77,000
2015		76,000
	$	317,000

During the nine months ended September 30, 2011, we wrote-off fully amortized expired patents in the aggregate amount of $270,000.  In addition, in September 2011, we disposed of patents with a net book value of $222,000 and patent applications with a net book value of $622,000 under the sale of our site-directed bone growth (SDBG) program.  See Note R.