Quarterly report pursuant to Section 13 or 15(d)

Statements of Cash Flows

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Statements of Cash Flows - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Cash flows from operating activities:    
Net loss $ (924,150) $ (930,501)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 29,515 28,113
Write-off of capitalized patents 0 17,344
Stock-based compensation 61,933 116,497
Stock issued for services 68,680 0
Decrease (increase) in operating assets:    
Accounts receivable 44,400 0
Prepaid expenses and other assets (17,715) (5,754)
Increase (decrease) in operating liabilities:    
Accounts payable 5,306 (44,036)
Accrued expenses (111,306) 4,710
Net cash used in operating activities (843,337) (813,627)
Cash flows from investing activities:    
Purchase of property and equipment (1,462) (10,678)
Acquisition of intangible assets (29,275) (13,385)
Net cash used in investing activities (30,737) (24,063)
Cash flows from financing activities:    
Net proceeds from issuance of common stock 21,204,609 0
Exercise of options and warrants 3,301,226 0
Net cash provided by financing activities 24,505,835 0
Net increase (decrease) in cash and cash equivalents 23,631,761 (837,690)
Cash and cash equivalents at beginning of year 3,157,256 3,057,682
Cash and cash equivalents at end of year $ 26,789,017 $ 2,219,992