Note 2 - Summary of Significant Accounting Policies - Trade Accounts Payable and Other Current Liabilities (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Trade accounts payable	$ 93,227	$ 162,829
Payroll and related expenses	22,537	42,472
Patent monetization expenses	133,347	162,990
Current operating lease liabilities	38,012	39,909
Deferred revenue	12,790	123,451
Professional and other service fees	117,415	172,712
Total trade accounts payable and other current liabilities	$ 417,328	$ 704,363