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Intangible Assets, Net
 12 Months Ended
Sep. 30, 2011
Intangible Assets, Net [Abstract]  
Intangible Assets, Net

8. INTANGIBLE ASSETS, NET

Intangible assets, net consisted of the following:

 

     September 30,  
     2011     2010  

Cost

    $ 458,912      $ 486,910   

Accumulated amortization

      (232,943 )      (209,263 ) 
  

 

 

    

 

 

  
   $ 225,969      $ 277,647   
  

 

 

    

 

 

  

Aggregate amortization expense relating to the Company's intangible assets was $31,418 and $35,591 during the years ended September 30, 2011 and 2010, respectively. In addition to amortization, the Company wrote off $22,551 and $47,850 of impaired patent costs to research and development expense during the years ended September 30, 2011 and 2010, respectively.

 

Estimated Amortization Expense Years Ended September 30,

       

2012

    $ 31,418   

2013

      31,418   

2014

      31,418   

2015

      31,418   

2016

      31,418   

Thereafter

      68,879   
  

 

 

  
   $ 225,969