Accounts Payable and Accrued Expenses - Accounts payable and accrues expenses (Details) - USD ($)	Jan. 31, 2017	Jul. 31, 2016
Payables and Accruals [Abstract]
Accounts Payable and Accruals – General and Administrative	$ 4,167,354	$ 3,750,638
Accounts Payable and Accruals – Research and Development	4,682,092	4,395,061
Accounts Payable and Accruals – Selling and Marketing	385,891	326,229
Accrued Make-whole Payments on Convertible Preferred Stock (see Note 8)	94,500	167,400
Executive Compensation and Directors’ Fees Payable	368,114	311,542
Total	$ 9,697,952	$ 8,950,870