Note 9 - Income Taxes - Reconciliation of Income Tax Benefit (Details) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
U.S. federal statutory rate applied to pretax loss	$ (497,833)	$ (537,620)
Permanent differences	278	549
Research and development credits	(47,053)	(53,884)
Change in valuation allowance	544,308	590,955
Reported income tax expense	$ 0	$ 0

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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