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Note 4 - Income Taxes - Component of Deferred Tax Assets (Details) - USD ($)
Dec. 31, 2023
Dec. 31, 2022
Section 174 - R&D expenses $ 1,769,000 $ 1,046,400
Stock option expense 1,419,300 1,341,900
NOL carryforward 11,620,700 11,524,900
Research and development credits 1,503,600 1,623,100
Operating lease liability 34,700 0
Right-of-use asset (35,800) 0
Other 134,800 (78,200)
Deferred tax asset, net of deferred tax liabilities 16,446,300 15,458,100
Valuation allowance (16,446,300) (15,458,100)
Net deferred tax asset $ 0 $ 0