Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets (Tables)

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Intangible Assets (Tables)
3 Months Ended
Mar. 31, 2013
Intangible Assets [Abstract]  
Intangible Assets
                 
    March 31,
2013
    December 31,
2012
 
    (unaudited)        

License agreements

  $ 802,994     $ 772,230  

Patents

    64,079       63,429  

Less: accumulated amortization

    (276,615     (261,928
   

 

 

   

 

 

 

Intangible assets, net

  $ 590,458     $ 573,731