Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Intangible Assets [Abstract]

Summary of Intangible Assets

Intangible assets at December 31, 2012 and 2011 consisted of the following:

	2012			2011
Patent costs	$	1,154,523		$	1,154,523
Less — Accumulated amortization		(755,392	)		(639,939	)
Total	$	399,131		$	514,584

Patent Costs Amortized on a Straight-Line Basis

Patent costs which are being amortized on a straight-line basis over a 10-year life, are scheduled to amortize as follows:

Year ending December 31,
2013		109,266
2014		94,100
2015		77,656
2016		61,119
2017		42,229
2018		14,761
	$	399,131