Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2017

Intangible Assets [Abstract]

Summary of intangible assets

	Cost		Accumulated Amortization		Net Book Value
March 31, 2017
Licenses	$	462,234	$	367,760	$	94,474
Patents		1,893,185		1,876,369		16,816
Total	$	2,355,419	$	2,244,129	$	111,290
December 31, 2016
Licenses	$	462,234	$	361,044	$	101,190
Patents		1,893,185		1,867,747		25,438
Total	$	2,355,419	$	2,228,791	$	126,628

Summary of future annual amortization expense

	Amortization Expense
April 1 through December 31,2017	$	46,462
2018	$	37,300
2019	$	27,528