v3.19.3.a.u2

Income Taxes - Schedule of Deferred Tax Assets (Details) (10-K) - USD ($) | Dec. 31, 2018 | Dec. 31, 2017
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Income Tax Disclosure [Abstract] |  |
Net operating loss carry forwards | $ 15,108,073 | $ 10,853,800
Patent costs | 382,812 | 325,615
Accrued vacation | 11,516 | 21,019
Research and development credit | 4,314,813 | 3,047,985
Stock-based compensation | 1,903,104 | 1,722,380
Other | 8,495 | 6,894
Gross deferred tax assets | 21,728,813 | 15,977,693
Valuation allowance | (21,728,813) | (15,977,693)
Net deferred tax assets |  |

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