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Patents
3 Months Ended
Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Patents
4. Patents
 
Patent intangible assets consist of the following at March 31, 2015:
 
 
 
Weighted Average Useful Life
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net Carrying Amount
 
Amortizable intangible assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
Patents
 
 
8.0
 
$
12,109,118
 
$
(2,081,299)
 
$
10,027,819
 
Total patent intangible assets
 
 
 
 
$
12,109,118
 
$
(2,081,299)
 
$
10,027,819
 
 
The Company expects amortization expense to be approximately $1,550,334 per year for each of the next six years and a pro rata portion in the last year.