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v3.20.1

Consolidated Statements of Cash Flows - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Cash flows from operating activities: |  |
Net loss | $ (8,482,000) | $ (9,500,000)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Common stock issued for services | 14,000 | 242,000
Share based compensation | 685,000 | 224,000
Depreciation and amortization | 240,000 | 271,000
Abandonment and impairment of capitalized patent costs | 733,000 | 322,000
Change in operating assets and liabilities: |  |
Contract assets | 0 | 145,000
Prepaid expenses and other assets | 109,000 | (134,000)
Accounts payable and accrued liabilities | (236,000) | 312,000
Accrued compensation and taxes | (15,000) | (266,000)
Contract liabilities | 50,000 |
Net cash used in operating activities | (6,902,000) | (8,384,000)
Cash flows from investing activities: |  |
Acquisition of fixed assets | (20,000) | (94,000)
Disbursements for patents and other intangible assets | (398,000) | (408,000)
Maturity of short term treasury bills | 6,923,000 | (6,923,000)
Net cash provided by (used in) investing activities | 6,505,000 | (7,425,000)
Cash flows from financing activities: |  |
Proceeds from issuance of common stock, net of offering costs | 0 | 23,511,000
Net cash provided by financing activities | 0 | 23,511,000
Net increase (decrease) in cash and cash equivalents | (397,000) | 7,702,000
Cash and cash equivalents, beginning of period | 8,949,000 | 1,247,000
Cash and cash equivalents, end of period | $ 8,552,000 | $ 8,949,000

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