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Intangible Assets
 6 Months Ended
Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets

Note 6. Intangible Assets

The components of our intangible assets at June 30, 2016 are summarized below:

 

Intangible Asset Class    Cost      Accumulated
Amortization		      Net
Carrying
Amount		      Weighted
Average
Amortization
Period		  

Patents and licenses

    $ 160,436       $ (121,609 )     $ 38,827         15 years   

Amortization expense was approximately $3,495 and $21,000 in the second quarter of 2016 and 2015 respectively.

The expected future annual amortization expense for each of the next five years based on current balances of our intangible assets is approximately as follows:

 

For the year ending December 31:       

2016

    $ 13,978   

2017

    $ 8,306   

2018

    $ 8,306   

2019

    $ 8,306   

2020

    $ 6,922