Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2013

Intangible Assets [Abstract]

Summary of intangible assets

	Weighted Average Remaining Amortization period (years)		Cost		Accumulated Amortization		Net Book Value
December 31, 2013
Licenses		6.72	$	462,234	$	279,258	$	182,976
Patents		2.6		1,893,185		1,443,649		449,536
Total		3.4	$	2,355,419	$	1,722,907	$	632,512
December 31, 2012
Licenses		7.72	$	462,234	$	252,019	$	210,215
Patents		3.3		1,893,185		1,247,672		645,513
Total		4.2	$	2,355,419	$	1,499,691	$	855,728

Summary of annual amortization expense

Year	Amortization Expense
2014	$	222,800
2015	$	172,500
2016	$	61,800
2017	$	61,800
2018	$	20,800