Quarterly report pursuant to Section 13 or 15(d)

Statements of Cash Flows

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Statements of Cash Flows - USD ($)
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Cash flows from operating activities:    
Loss from continuing operations $ (2,328,138) $ (3,303,852)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 82,913 109,845
Write-off of capitalized patents 0 10,873
Stock-based compensation 156,882 645,349
Decrease in operating assets:    
Prepayments and other current assets 204,530 186,764
Increase (decrease) in operating liabilities:    
Accounts payable 1,337 192,352
Accrued expenses 6,336 (108,489)
Net cash used in operating activities (1,876,140) (2,267,158)
Net cash used in operating activities - discontinued operations (557,096) (2,076,842)
Cash flows from investing activities:    
Purchase of property and equipment (4,253) (1,088)
Acquisition of intangible assets (74,342) (85,913)
Net cash used in investing activities (78,595) (87,001)
Net cash provided by (used in) investing activities - discontinued operations 23,587 (49,865)
Cash flows from financing activities:    
Payment of taxes related to restricted stock vesting 0 (2,616)
Net cash used in financing activities 0 (2,616)
Net decrease in cash and cash equivalents - continuing operations (1,954,735) (2,356,775)
Net decrease in cash and cash equivalents - discontinued operations (533,509) (2,126,707)
Cash and cash equivalents at beginning of period 3,258,077 10,022,247
Cash and cash equivalents at end of period $ 769,833 $ 5,538,765