Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2014

Intangible Assets [Abstract]

Summary of intangible assets

	Weighted Average Remaining Amortization Period  (years)		Cost		Accumulated  Amortization		Net Book  Value
September 30, 2014
Licenses		6.0	$	462,234	$	299,629	$	162,605
Patents		2.1		1,893,185		1,589,576		303,609
Total		2.8	$	2,355,419	$	1,889,205	$	466,214
December 31, 2013
Licenses		6.7	$	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

Summary of annual amortization expense

Year	Amortization  Expense
October 1 through December 31, 2014	$	56,500
2015	$	172,500
2016	$	61,800
2017	$	61,800
2018	$	20,800