Consolidated Balance Sheets - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Current Assets:
Cash and cash equivalents	$ 7,469,000	$ 1,238,000
Accounts receivable, net	38,000	86,000
Inventory, net	121,000	74,000
Prepaid expenses and other current assets	122,000	358,000
Total Current Assets	7,750,000	1,756,000
Property and equipment, net of accumulated depreciation of $7,290,000 and $4,908,000, respectively	5,551,000	7,902,000
Patents, licenses and purchased technology, net of accumulated amortization of $869,000 and $795,000, respectively	938,000	886,000
Other assets	126,000	255,000
Total Assets	14,365,000	10,799,000
Current Liabilities:
Accounts payable	432,000	762,000
Accrued expenses	418,000	455,000
Current portion of derivative fair value-warrants		946,000
Total Current Liabilities	850,000	2,163,000
Other long term liabilities	393,000	4,634,000
Total Liabilities	$ 1,243,000	$ 6,797,000
Commitments and contingencies (Notes 7 and 8)
Stockholders' Equity:
Preferred stock, $.001 par value, 2,000,000 shares authorized, 330,873 and 328,925 issued and outstanding, respectively
Common stock, $.001 par value, 250,000,000 shares authorized, 39,608,218 and 14,264,141 shares issued and outstanding, respectively	$ 39,000	$ 14,000
Capital in excess of par value	304,053,000	286,356,000
Accumulated deficit	(290,970,000)	(282,368,000)
Total Stockholders' Equity	13,122,000	4,002,000
Total Liabilities and Stockholders' Equity	$ 14,365,000	$ 10,799,000