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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Net cash used in operating activities $ (539,076) $ (389,433)
Cash flows from investing activities    
Investment in equipment
Investment in patents (1,637) (2,108)
Net cash used in investing activities (1,637) (2,108)
Cash flows from financing activities    
Payments on convertible notes (37,500) (195,000)
Proceeds from private placement offering 25,000
Net cash used in financing activities (12,500) (195,000)
Net change in cash (553,213) (586,541)
Cash and cash equivalents at beginning of period 1,276,654 1,980,015
Cash and cash equivalents at end of period 723,441 1,393,474
Supplemental Cash Flow Information    
Cash paid for interest 203
Cash paid for income taxes
Non-Cash Transactions    
Stock issued for accrued liabilities 93,250
Stock issued for advances from investors 25,000 496,736
Conversion of debt to common stock 178,125
Reversal of previously accrued dividend $ 34,277