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Condensed Consolidated Balance Sheets - USD ($)
Mar. 31, 2017
Dec. 31, 2016
Current Assets:    
Cash and cash equivalents $ 436,952 $ 1,165,738
Short-term receivable - settlement 200,000 300,000
Other current assets 250,515 360,562
Total Current Assets 887,467 1,826,300
Equipment and furnishings, less accumulated depreciation of $466,772 and $464,140, respectively 69,402 72,033
Patents, net of accumulated amortization of $9,641,758 and $9,473,978, respectively 2,073,687 2,241,467
Long-term receivable - reimbursable legal fees, net of reserve for uncollectibility of $455,500 455,500 455,500
Long-term receivable - settlement, net of discount and reserve for uncollectibility of $1,549,043 1,024,345 1,015,710
Total Assets 4,510,401 5,611,010
Current Liabilities:    
Accounts payable - trade 2,770,860 1,919,870
Other accrued expenses 159,855 221,956
Convertible note payable - related party 2,500,000  
Total Liabilities 5,430,715 2,141,826
Commitments and contingencies
Stockholders' (Deficiency) Equity:    
Preferred stock; par value $0.001 per share; 25,000,000 shares authorized; Series B Convertible Preferred Stock; 240,000 shares designated; 100 and 8,600 shares issued and outstanding at March 31, 2017 and December 31, 2016, respectively; aggregate liquidation preference of $3,500 and $301,000 at March 31, 2017 and December 31, 2016, respectively   9
Common stock; par value $0.001 per share; 1,000,000,000 shares authorized; 370,354,643 and 364,773,297 shares issued and outstanding, respectively 370,355 364,773
Additional paid-in capital 208,322,249 208,327,822
Accumulated deficit (209,612,918) (205,223,420)
Total Stockholder's (Deficiency) Equity (920,314) 3,469,184
Total Liabilities and Stockholders' (Deficiency) Equity $ 4,510,401 $ 5,611,010