Condensed Consolidated Balance Sheets - USD ($)	Oct. 01, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 3,395,000	$ 7,469,000
Accounts receivable, net	5,000	38,000
Inventory, net	64,000	121,000
Prepaid expenses and other current assets	123,000	122,000
Total Current Assets	3,587,000	7,750,000
Property and equipment, net of accumulated depreciation of $8,966,000 and $7,290,000, respectively	3,875,000	5,551,000
Patents, licenses and purchased technology, net of accumulated amortization of $927,000 and $869,000, respectively	1,011,000	938,000
Other assets	96,000	126,000
Total Assets	8,569,000	14,365,000
Current Liabilities:
Accounts payable	341,000	432,000
Accrued expenses	750,000	418,000
Total Current Liabilities	1,091,000	850,000
Other long-term liabilities	262,000	393,000
Total Liabilities	1,353,000	1,243,000
Commitments and contingencies-Notes 5 and 6
Stockholders' Equity:
Preferred stock, $.001 par value, 2,000,000 shares authorized, 330,369 and 330,873 shares issued and outstanding, respectively
Common stock, $.001 par value, 250,000,000 shares authorized, 3,276,782 and 2,640,547 shares issued and outstanding, respectively	3,000	3,000
Capital in excess of par value	306,765,000	304,089,000
Accumulated deficit	(299,552,000)	(290,970,000)
Total Stockholders' Equity	7,216,000	13,122,000
Total Liabilities and Stockholders' Equity	$ 8,569,000	$ 14,365,000