Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)

v3.5.0.2
Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)
Sep. 30, 2016
Dec. 31, 2015
Allowance for doubtful accounts $ 10,000 $ 5,000
Furniture, fixtures & equipment, accumulated depreciation 636,265 566,477
Patents, accumulated amortization $ 699,405 $ 646,388
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 5,000,000 5,000,000
Preferred stock, shares issued (in shares) 7,000 7,000
Preferred stock, shares outstanding (in shares) 7,000 7,000
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 50,000,000 50,000,000
Common stock, shares issued (in shares) 28,066,666 21,720,497
Common stock, shares to be issued (in shares) 1,145,481 963,451
Common stock, outstanding (in shares) 28,033,333 21,687,164
Treasury stock, at cost (in shares) 33,333 33,333