Quarterly report pursuant to Section 13 or 15(d)

4. Stock Option Plan (Details Narrative)

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4. Stock Option Plan (Details Narrative) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Employee and non-employee director stock-based compensation expense $ 220,765 $ 150,726
Stock-based compensation expense for non-employees $ 17,561 20,709
Weighted average grant date fair $ 9.30  
Fair value of shares vested $ 200,000 500,000
Aggregate intrinsic value of outstanding stock options 4,600,000  
Unamortized unvested balance of stock base compensation $ 3,400,000  
Unamortized unvested balance of stock base compensation, period 3 years  
Minimum    
Expected term 4 years 8 months 12 days  
Volatility 55.00%  
Dividends 0.00%  
Risk free interest rate 1.20%  
Maximum    
Expected term 6 years 2 months 12 days  
Volatility 85.00%  
Dividends 0.00%  
Risk free interest rate 2.90%  
Research and Development Expenses    
Employee and non-employee director stock-based compensation expense $ 100,171 $ 62,341