Quarterly report pursuant to Section 13 or 15(d)

The assumptions used in the valuation of stock options granted during the six months ended June 30, 2023 and 2022 were as follows: (Details)

v3.23.2
The assumptions used in the valuation of stock options granted during the six months ended June 30, 2023 and 2022 were as follows: (Details)
6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Risk-free interest rate - Minimum 3.42% 1.67%
Risk-free interest rate - Maximum 4.02% 3.05%
Expected stock price volatility - minimum 121.26% 120.32%
Expected stock price volatility - maximum 142.72% 133.22%
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 5 years 6 months
Maximum [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Expected term of option 10 years 10 years