Quarterly report pursuant to Section 13 or 15(d)

The assumptions used in the valuation of stock options granted during the nine months ended September 30, 2022 and 2021 were as follows: (Details)

v3.22.2.2
The assumptions used in the valuation of stock options granted during the nine months ended September 30, 2022 and 2021 were as follows: (Details)
9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Risk-free interest rate - Minimum 1.67% 0.79%
Risk-free interest rate - Maximum 3.05% 1.63%
Expected stock price volatility - minimum 120.32% 124.37%
Expected stock price volatility - maximum 133.22% 137.73%
Expected dividend yield 0.00% 0.00%
Minimum [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Expected term of option 5 years 6 months 5 years 6 months
Maximum [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Expected term of option 10 years 6 years