Condensed Consolidated Balance Sheets - USD ($)	Oct. 31, 2015	Jul. 31, 2015
Current assets
Cash and cash equivalents	$ 6,055,000	$ 1,321,000
Accounts receivable	93,000	189,000
Inventories, net	219,000	207,000
Restricted cash	75,000	75,000
Prepaid expenses	150,000	187,000
Total current assets	6,592,000	1,979,000
Property, plant and equipment, net	83,000	90,000
Patents, net	1,152,000	1,192,000
Total assets	7,827,000	3,261,000
Current liabilities
Accounts payable	384,000	560,000
Restructuring liability	54,000	59,000
Accrued liabilities	177,000	246,000
Derivative liability	6,969,000	4,000
Total current liabilities	7,584,000	869,000
Deferred rent	8,000	9,000
Total liabilities	$ 7,592,000	$ 878,000
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, 55,211,380 shares issued and outstanding at October 31, 2015, and 41,859,297 shares issued and outstanding at July 31, 2015	$ 553,000	$ 420,000
Additional paid-in capital	91,350,000	90,811,000
Accumulated deficit	(91,668,000)	(88,848,000)
Total stockholders' equity	235,000	2,383,000
Total liabilities and stockholders' equity	$ 7,827,000	$ 3,261,000