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Income Taxes, Deferred Tax Assets (Liabilities) (Details) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
Deferred tax asset arising from:    
Net operating loss carry forwards $ 16,873,473 $ 14,975,253
Accrued expenses (vacation) 13,920 171,662
Intangibles 82,451 67,109
Research and development tax credits 3,190,604 2,952,047
Share-based compensation expense 20,207 20,035
Lease liabilities 188,789 271,231
Other 8,898 15,281
Deferred tax asset 20,378,342 18,472,618
Deferred tax liability arising from:    
UNICAP (10,615) (10,470)
Right-of-use assets (138,239) (231,283)
Property and equipment (14,409) (27,898)
Deferred tax liability (163,263) (269,651)
Valuation allowance 20,215,079 18,202,967
Net deferred tax asset $ 0 $ 0