Quarterly report pursuant to Section 13 or 15(d)

4. Stock Option Plan (Details Narrative)

v3.19.2
4. Stock Option Plan (Details Narrative) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Employee and non-employee director stock-based compensation expense $ 164,600 $ 26,362 $ 315,326 $ 52,514
Stock-based compensation expense for non-employees 20,708 25,230 $ 41,418 73,856
Dividends     0.00%  
Weighted average grant date fair     $ 3.30  
Fair value of shares vested 349,409 79,310 $ 483,846 145,884
Aggregate intrinsic value of outstanding stock options 3,300,000   3,300,000  
Unamortized unvested balance of stock base compensation 700,000   $ 700,000  
Unamortized unvested balance of stock base compensation, period     3 years 6 months  
Minimum        
Expected term     4 years 8 months 12 days  
Volatility     55.00%  
Risk free interest rate     1.20%  
Maximum        
Expected term     6 years 2 months 12 days  
Volatility     85.00%  
Risk free interest rate     2.90%  
Research and Development Expenses        
Employee and non-employee director stock-based compensation expense $ 72,324 $ 36,978 $ 134,665 $ 76,726