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Note 10 - Summary of Share-based Compensation Expense (Details) - USD ($)
3 Months Ended 9 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Cost of Sales [Member]        
Share-based compensation expense $ 7,024 $ 2,702 $ 18,695 $ 9,169
Selling, General and Administrative Expenses [Member]        
Share-based compensation expense 119,653 125,407 350,099 419,968
Research and Development Expense [Member]        
Share-based compensation expense 26,186 19,427 92,923 59,821
Share-based compensation expense $ 152,863 $ 147,536 $ 461,717 $ 488,958