Accounts Payable and Accrued Expenses - Accounts payable and accrued expenses (Details) (USD $)	Jan. 31, 2014	Jul. 31, 2013
Payables and Accruals [Abstract]
Accounts Payable & Accruals -General and Administrative	$ 3,282,163	$ 3,447,618
Accounts Payable & Accruals - Research and Development	3,889,180	3,557,184
Accounts Payable & Accruals - Selling and Marketing	326,929	328,629
Accrued Make Whole Payments on Convertible Preferred Stock (see Note 9)	222,750	251,100
Executive Compensation and Directors' Fees Payable	170,657	76,703
Total	$ 7,891,679	$ 7,661,234