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Patents (Details Narrative) - USD ($)
12 Months Ended
Jul. 31, 2014
Jul. 31, 2013
Jul. 31, 2012
Jul. 31, 2019
Jul. 31, 2018
Jul. 31, 2017
Jul. 31, 2016
Jul. 31, 2015
Accounting Policies [Abstract]                
Amortization expense, patents $ 357,965 $ 391,777 $ 441,087          
Amortization expense, patents, next year               $ 315,000
Amortization expense, patents, year two             $ 315,000  
Amortization expense, patents, year three           $ 315,000    
Amortization expense, patents, year four         $ 315,000      
Amortization expense, patents, year five       $ 315,000        
Write-off of abandoned patents     $ 440,780