Quarterly report pursuant to Section 13 or 15(d)

4. Stock Option Plan (Details Narrative)

v3.20.2
4. Stock Option Plan (Details Narrative) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Employee and non-employee director stock-based compensation expense $ 248,889 $ 164,600 $ 469,655 $ 315,326
Dividends 0.00%      
Weighted average grant date fair value $ 5.43 $ 9.22 $ 5.43 $ 9.22
Fair value of shares vested $ 600,000 $ 500,000 $ 600,000 $ 500,000
Aggregate intrinsic value of outstanding stock options 4,900,000   4,900,000  
Unamortized unvested balance of stock base compensation $ 3,000,000   $ 3,000,000  
Unamortized unvested balance of stock base compensation, period     2 years 11 months 5 days  
Minimum        
Expected term 4 years 8 months 12 days      
Volatility 55.00%      
Risk free interest rate 0.40%      
Maximum        
Expected term 6 years 2 months 12 days      
Volatility 85.00%      
Risk free interest rate 2.90%      
Research and Development Expenses        
Stock-based compensation expense for non-employees $ 17,571 $ 20,708 $ 35,131 $ 41,418