Accounts Payable and Accrued Expenses (Tables)

6 Months Ended

12 Months Ended

Jan. 31, 2013

Jul. 31, 2012

Payables and Accruals [Abstract]

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

                    Accounts payable and accrued expenses consist of the following:

	January 31, 2013		July 31, 2012
Accounts Payable & Accruals – General and Administrative	$	3,716,106	$	3,556,160
Accounts Payable & Accruals – Research and Development		3,055,890		2,691,192
Accounts Payable & Accruals – Selling and Marketing		315,846		290,534
Accrued Make-whole Payments on Convertible Preferred Stock (see Note 10)		202,500		402,300
Executive Compensation and Directors’ Fees Payable		376,919		75,466
Total	$	7,667,261	$	7,015,652

Accounts payable and accrued expenses consist of the following:

	July 31,
	2012		2011
Accounts Payable & Accruals – General and Administrative	$	3,556,160	$	4,805,091
Accounts Payable & Accruals – Research and Development		2,691,192		2,151,333
Accounts Payable & Accruals – Selling and Marketing		290,534		434,265
Accrued Make Whole Payments on Convertible Preferred Stock (see Note 11)		402,300		347,490
Executive Compensation and Directors’ Fees Payable		75,466		—
Total	$	7,015,652	$	7,738,179