Quarterly report pursuant to Section 13 or 15(d)

The Company???s results of operations include expenses relating to stock-based compensation as follows (Details)

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The Company’s results of operations include expenses relating to stock-based compensation as follows (Details) - USD ($)
3 Months Ended
Jul. 31, 2021
Jul. 31, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total $ 739,622 $ 591,433
Research and Development Expense [Member]    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total 141,917 21,813
General and Administrative Expense [Member]    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total $ 597,705 $ 569,620