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Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]    
Intangible assets

Amortization of all intangible assets in the years ended December 31, 2014 and 2013, was $30,000 and $60,000, respectively, and is included in research and development expense. Intangible assets as of December 31, 2014 consisted of the following:

 

   Gross
Assets
  Accumulated
Amortization
  Net
Patent  $600,000   $600,000   $—   
Project management tools    570,750    570,750    —   
     Total intangible assets   $1,170,750  $1,170,750  $—  

Intangible assets as of December 31, 2013 consisted of the following:

 

   Gross
Assets
  Accumulated
Amortization
  Net
Patent  $600,000   $570,000   $30,000 
Project management tools    570,750    570,750    —   
     Total intangible assets   $1,170,750  $1,140,750  $30,000