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Patents
9 Months Ended
Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Patents

6.

Patents


Included in other assets at September 30, 2016 and December 31, 2015 are capitalized patent costs as follows:


 

 

September 30,

2016

 

December 31,

2015

 

 

 

(Unaudited)

 

 

 

Patent costs

 

$

475,492

 

$

372,411

 

Less accumulated amortization

 

 

(44,159

)

 

(33,512

)

 

 

$

431,333

 

$

338,899

 


Amortization expense for the three and nine months ended September 30, 2016 and 2015 amounted to $3,395, $10,647, $3,251, and $9,759, respectively.