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Note 5 - Patents and Trademarks, Net
12 Months Ended
Aug. 31, 2012
Intangible Assets Disclosure [Text Block]
5.           PATENTS AND TRADEMARKS, NET

Patents and trademarks, net consisted of the following:

   
August 31, 2012
   
August 31, 2011
 
Patents and trademarks
  $ 1,945,785     $ 1,758,722  
Less accumulated amortization
    (984,604 )     (855,684 )
    $ 961,181     $ 903,038  

Patent and trademark costs are amortized over seven years.  Costs incurred related to patents and trademarks are capitalized until filed and approved, at which time the amounts capitalized to date are amortized and any further costs, including maintenance costs, are expensed as incurred.  Amortization expense is estimated to approximate $160,000 in each of the next five fiscal years.