Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Accumulated depreciation on equipment and furnishings	$ 427,615	$ 422,965
Amortization on patents	7,292,837	6,789,497
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	25,000,000	25,000,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	139,974,331	118,427,925
Common stock, shares outstanding	139,974,331	118,427,925
8% Convertible Preferred Stock [Member]
Preferred stock, shares issued	746,666	2,478,185
Preferred stock, shares outstanding	746,666	2,478,185
Preferred stock, liquidation preference per share	$ 0.75	$ 0.75
Aggregate liquidation preference	570,585	1,896,117
Convertible preferred stock	8.00%	8.00%
Series A 8% Convertible Preferred Stock [Member]
Preferred stock, shares issued	2,958,334
Preferred stock, shares outstanding	2,958,334
Preferred stock, liquidation preference per share	$ 0.75	$ 0.75
Aggregate liquidation preference	$ 2,246,855	$ 2,246,855
Convertible preferred stock	8.00%	8.00%