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INTANGIBLE ASSETS (Tables)
 9 Months Ended
Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Finite-Lived Intangible Assets [Table Text Block]
   

September 30,

2016

    

December 31,

2015

  
             
Patents   $ 732,962     $ 690,162  
Less: Accumulated amortization     82,314       70,395  
                 
Intangible Assets - net    $ 650,648     $ 619,767  

 

Amortization expense for the nine months ending September 30, 2016 and 2015 was $11,918 and $11,146. Amortization expense for the three months ending September 30, 2016 and 2015 was $3,972 and $3,715. Expense for abandoned patents for claims covered by patents already granted to the Company are recorded in research and development expenses and for the three months and nine months ending September 30, 2016 and 2015 were $0 and $0.