Condensed Consolidated Balance Sheets - USD ($)	Jul. 31, 2015	Jul. 31, 2014
Current assets
Cash and cash equivalents	$ 1,321,000	$ 86,000
Accounts receivable, net	189,000	47,000
Inventories, net	207,000	249,000
Restricted cash	75,000
Prepaid expenses	187,000	96,000
Total current assets	1,979,000	478,000
Property, plant and equipment, net	90,000	36,000
Patents, net	1,192,000	1,345,000
Total assets	3,261,000	1,859,000
Current liabilities
Accounts payable	560,000	1,096,000
Restructuring liability	59,000	323,000
Accrued liabilities	246,000	401,000
Derivative liability	4,000	9,000
Total current liabilities	869,000	1,829,000
Deferred rent	9,000	13,000
Total liabilities	$ 878,000	$ 1,842,000
Commitments and contingencies (See Note 7)
Stockholders' equity
Preferred stock, $0.01 par value: 5,000,000 shares authorized, no shares issued
Common stock, $0.01 par value: 100,000,000 shares authorized, 41,859,297 shares issued and outstanding at July 31, 2015, and 29,394,940 shares issued and outstanding at July 31, 2014	$ 420,000	$ 295,000
Additional paid-in capital	90,811,000	80,943,000
Accumulated deficit	(88,848,000)	(81,221,000)
Total stockholders' equity	2,383,000	17,000
Total liabilities and stockholders' equity	$ 3,261,000	$ 1,859,000