Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

The components of our intangible assets at March 31, 2016 are summarized below:


Intangible Asset Class	Cost		Accumulated Amortization			Net Carrying Amount		Weighted Average Amortization Period
Patents	$	160,436	$	(118,114	)	$	42,322	17 years

Expected Future Annual Amortization Expense

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	$	13,978
2017	$	8,306
2018	$	8,306
2019	$	8,306
2020	$	6,922