Quarterly report pursuant to Section 13 or 15(d)

4. Stock Option Plan (Details 1)

v3.19.2
4. Stock Option Plan (Details 1) - $ / shares
6 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Dec. 31, 2017
Number of shares outstanding 1,105,896 1,105,896 658,592
Option 1      
Exercise price $ .001    
Number of shares outstanding 555,520    
Weighted average remaining contractual life 7 years 2 months 12 days    
Number of shares fully vested and exercisable 440,720    
Weighted average remaining contractual life 7 years 1 month 6 days    
Option 2      
Exercise price $ 6.00    
Number of shares outstanding 550,376    
Weighted average remaining contractual life 9 years    
Number of shares fully vested and exercisable 175,212    
Weighted average remaining contractual life 8 years 10 months 24 days