Quarterly report pursuant to Section 13 or 15(d)

Share Based Awards - Stock compensation expense (Details)

v3.20.4
Share Based Awards - Stock compensation expense (Details) - USD ($)
 3 Months Ended 6 Months Ended
Oct. 31, 2020
Oct. 31, 2020
Share-based Payment Arrangement [Abstract]    
General and administrative $ 94,629 $ 189,258
Research and development 9,945 19,890
Operations 2,487 4,974
Total $ 107,061 $ 214,122