Intangible Assets

3 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Note 4. Intangible Assets

The components of our intangible assets at March 31, 2015 are summarized below:

Intangible Asset Class	Cost		Accumulated Amortization			Net Carrying Amount		Weighted Average Amortization Period
Patents	$	1,243,612	$	(907,585	)	$	336,027		17 years

Amortization expense was approximately $21,000 in the first quarter of 2015 and expected amortization expense for the year ended December 31, 2015 is approximately $83,000

The expected future annual amortization expense for each of the next five years based on current balances of our intangible assets is approximately as follows:

For the year ending December 31:
2016	$	75,496
2017	$	54,923
2018	$	27,978
2019	$	27,978
2020	$	26,594