Quarterly report pursuant to Section 13 or 15(d)

4. Stock Option Plan (Details 1)

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4. Stock Option Plan (Details 1) - $ / shares
3 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Mar. 31, 2017
Dec. 31, 2016
Number of shares outstanding 690,596 658,592 658,592 280,000
Number of shares fully vested and exercisable 381,968      
Option 1        
Exercise price $ 0.001      
Number of shares outstanding 555,520      
Weighted average remaining contractual life 8 years 6 months      
Number of shares fully vested and exercisable 354,620      
Weighted average remaining contractual life 8 years 2 months 12 days      
Option 2        
Exercise price $ 6.00      
Number of shares outstanding 135,076      
Weighted average remaining contractual life 9 years 7 months 6 days      
Number of shares fully vested and exercisable 27,348      
Weighted average remaining contractual life 9 years 7 months 6 days