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Note 13 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Net operating loss | $ 10,417,666 | $ 10,495,881
Research and development credits | 1,228,255 | 708,443
Capitalized research expenditures | 6,392,545 | 2,271,853
Stock-based compensation | 698,886 | 567,473
Charitable contributions | 1,321 | 0
Intangibles | 193,106 | 223,548
Gross deferred tax assets | 18,931,779 | 14,267,198
Less valuation allowance | (18,557,844) | (14,100,543)
Total deferred tax assets | 373,935 | 166,655
Prepaids | (373,935) | (166,655)
Gross deferred tax liabilities | (373,935) | (166,655)
Deferred tax assets, net | $ 0 | $ 0

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