Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets

 v2.3.0.11
Intangible Assets
 6 Months Ended
Jun. 30, 2011
Intangible Assets
7.
Intangible Assets

The major classes of intangible assets are as follows:

 
June 30, 2011
    
December 31, 2010
  
 
Weighted
Average
Remaining
Life1
  
Gross 
Carrying
Amount
    
Accumulated
Amortization
    
Gross 
Carrying
Amount
    
Accumulated
Amortization
  
                           
Patents and trademarks
3.1 yrs
   $ 544,599     $ 450,758     $ 552,470     $ 449,783  

1 The weighted average remaining life is calculated for issued patents and does not include pending patent applications or trademarks which are not currently being amortized.

The estimated amortization expenses, related to those patents and trademarks currently being amortized, for the next five fiscal years are as follows:

   
Estimated 
Amortization
Expense
  
For the year ended 12/31/2011
   $ 1,372  
For the year ended 12/31/2012
     1,002  
For the year ended 12/31/2013
     284  
For the year ended 12/31/2014
     265  
For the year ended 12/31/2015
     236