Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Equity - Assumptions Used (Details)

v3.20.2
Note 5 - Equity - Assumptions Used (Details)
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Expected dividend yield 0.00% 0.00%
Minimum [Member]    
Risk-free interest rate 0.20% 1.00%
Expected volatility of common stock 125.40% 85.00%
Expected life (years) (Year) 3 years 9 months 18 days 5 years 3 months 18 days
Maximum [Member]    
Risk-free interest rate 0.50% 1.30%
Expected volatility of common stock 128.00% 100.00%
Expected life (years) (Year) 6 years 3 months 18 days 6 years 3 months 18 days