Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2015

Intangible Assets [Abstract]

Summary of intangible assets

	Weighted Average Remaining Amortization Period (Years)	Cost		Accumulated Amortization		Net Book Value
December 31, 2015
Licenses	3.8	$	462,234	$	333,732	$	128,502
Patents	1.1		1,893,185		1,832,955		60,230
Total	1.9	$	2,355,419	$	2,166,687	$	188,732
December 31, 2014
Licenses	4.7	$	462,234	$	306,495	$	155,739
Patents	1.9		1,893,185		1,638,975		254,210
Total	2.6	$	2,355,419	$	1,945,470	$	409,949

Summary of annual amortization expense

Year	Amortization Expense
2016	$	61,800
2017	$	61,800
2018	$	37,300
2019	$	27,832