Note 8 - Trade Accounts Payable and Other Current Liabilities - Other Current Liabiiliteis (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Trade accounts payable	$ 111,876	$ 162,829
Payroll and related expenses	43,696	42,472
Patent monetization expenses	157,605	162,990
Current operating lease liabilities payable	38,702	39,909
Deferred revenue	19,769	123,451
Professional and other service fees	153,005	172,712
Total trade accounts payable and other current liabilities	$ 524,653	$ 704,363