| Summary of license fees earned | 
        
   
   
   
   
   |   | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
    
   
   |   | 
     | 
   Three Months Ended August 31, 2012 | 
     | 
     | 
   Nine Months Ended August 31, 2012 | 
     | 
    
   
   |   | 
     | 
   License Fee | 
     | 
     | 
   Process and Storage Royalties | 
     | 
     | 
   Total | 
     | 
     | 
   License Fee | 
     | 
     | 
   Process and Storage Royalties | 
     | 
     | 
   Total | 
     | 
    
   
   
   
   | 
    India 
    | 
     | 
     | 
   —   | 
     | 
     | 
     | 
   169,412 | 
     | 
     | 
     | 
   169,412 | 
     | 
     | 
     | 
   —   | 
     | 
     | 
     | 
   508,235 | 
     | 
     | 
     | 
   508,235 | 
     | 
    
   
   | 
    Mexico 
    | 
     | 
     | 
   —   | 
     | 
     | 
     | 
   156,969 | 
     | 
     | 
     | 
   156,969 | 
     | 
     | 
     | 
   —   | 
     | 
     | 
     | 
   464,021 | 
     | 
     | 
     | 
   464,021 | 
     | 
    
   
   | 
    Costa Rica 
    | 
     | 
     | 
   25,000 | 
     | 
     | 
     | 
   —   | 
     | 
     | 
     | 
   25,000 | 
     | 
     | 
     | 
   25,000 | 
     | 
     | 
     | 
   —   | 
     | 
     | 
     | 
   25,000 | 
     | 
    
   
   | 
    Nicaragua 
    | 
     | 
     | 
   5,000 | 
     | 
     | 
     | 
   —   | 
     | 
     | 
     | 
   5,000 | 
     | 
     | 
     | 
   20,000 | 
     | 
     | 
     | 
   —   | 
     | 
     | 
     | 
   20,000 | 
     | 
    
   
   |   | 
     | 
   
      
    | 
   
      
    | 
     | 
     | 
   
      
    | 
   
      
    | 
     | 
     | 
   
      
    | 
   
      
    | 
     | 
     | 
   
      
    | 
   
      
    | 
     | 
     | 
   
      
    | 
   
      
    | 
     | 
     | 
   
      
    | 
   
      
    | 
     | 
    
   
   | 
    Total 
    | 
     | 
   $ | 
   30,000 | 
     | 
     | 
   $ | 
   326,381 | 
     | 
     | 
   $ | 
   356,381 | 
     | 
     | 
   $ | 
   45,000 | 
     | 
     | 
   $ | 
   972,256 | 
     | 
     | 
   $ | 
   1,017,256 | 
     | 
    
   
   |   | 
     | 
   
      
    | 
   
      
    | 
     | 
     | 
   
      
    | 
   
      
    | 
     | 
     | 
   
      
    | 
   
      
    | 
     | 
     | 
   
      
    | 
   
      
    | 
     | 
     | 
   
      
    | 
   
      
    | 
     | 
     | 
   
      
    | 
   
      
    | 
     | 
    
   
   |   | 
     | 
     | 
    
   
   |   | 
     | 
   Three Months Ended August 31, 2011 | 
     | 
     | 
   Nine Months Ended August 31, 2011 | 
     | 
    
   
   |   | 
     | 
   License Fee | 
     | 
     | 
   Process and Storage Royalties | 
     | 
     | 
   Total | 
     | 
     | 
   License Fee | 
     | 
     | 
   Process and Storage Royalties | 
     | 
     | 
   Total | 
     | 
    
   
   | 
    China 
    | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
   $ | 
   50,000 | 
     | 
     | 
   $ | 
   50,000 | 
     | 
    
   
   | 
    India 
    | 
     | 
   $ | 
   —   | 
     | 
     | 
   $ | 
   141,177 | 
     | 
     | 
   $ | 
   141,177 | 
     | 
     | 
   $ | 
   —   | 
     | 
     | 
     | 
   423,530 | 
     | 
     | 
     | 
   423,530 | 
     | 
    
   
   | 
    Mexico 
    | 
     | 
     | 
   —   | 
     | 
     | 
     | 
   177,747 | 
     | 
     | 
     | 
   177,747 | 
     | 
     | 
     | 
   —   | 
     | 
     | 
     | 
   453,015 | 
     | 
     | 
     | 
   453,015 | 
     | 
    
   
   | 
    Costa Rica 
    | 
     | 
     | 
   15,983 | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
   15,983 | 
     | 
     | 
     | 
   15,983 | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
   15,983 | 
     | 
    
   
   | 
    Germany (1) 
    | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
   9,769 | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
   9,769 | 
     | 
    
   
   | 
    Nicaragua 
    | 
     | 
     | 
     | 
     | 
     | 
     | 
   —   | 
     | 
     | 
     | 
     | 
     | 
     | 
     | 
   10,000 | 
     | 
     | 
     | 
   —   | 
     | 
     | 
     | 
   10,000 | 
     | 
    
   
   |   | 
     | 
   
      
    | 
   
      
    | 
     | 
     | 
   
      
    | 
   
      
    | 
     | 
     | 
   
      
    | 
   
      
    | 
     | 
     | 
   
      
    | 
   
      
    | 
     | 
     | 
   
      
    | 
   
      
    | 
     | 
     | 
   
      
    | 
   
      
    | 
     | 
    
   
   | 
    Total 
    | 
     | 
   $ | 
   15,983 | 
     | 
     | 
   $ | 
   318,924 | 
     | 
     | 
   $ | 
   334,907 | 
     | 
     | 
   $ | 
   35,752 | 
     | 
     | 
   $ | 
   926,545 | 
     | 
     | 
   $ | 
   962,297 | 
     | 
    
   
   |   | 
     | 
   
      
    | 
   
      
    | 
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     | 
   
      
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