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Note 5 - Patents and Trademarks, Net (Tables)
9 Months Ended
May 31, 2013
Disclosure Text Block [Abstract]  
Schedule of Finite-Lived Intangible Assets [Table Text Block]
   
May 31, 2013
   
August 31, 2012
 
Patents and trademarks
  $ 2,097,872     $ 1,945,785  
Less accumulated amortization
    (1,036,147 )     (984,604 )
    $ 1,061,725     $ 961,181