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4. Intangible Assets
 3 Months Ended
Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
4. Intangible Assets

Note 4 Intangible Assets

 

Intangible assets -patents consisted of the following at March 31, 2015 and December 31, 2014:

 

   March 31, 2015  December 31, 2014
           
Patents  $67,647   $61,690 
Less: Impairment Charges   —      —   
Less: Accumulated Amortization   (16,287)   (15,261)
Patents - net  $51,360   $46,430 

 

At March 31, 2015, future amortization of intangible assets is as follows:

 

 Year Ending December 31      
 2015   $4,257 
 2016    4,302 
 2017    4,297 
 2018    4,297 
 2019    4,297 
 2020 and Thereafter    29,910 
     $51,360 

 

Actual amortization expense in future periods could differ from these estimates as a result of future acquisitions, divestitures, impairments and other factors.