Income Taxes - Income tax reconciliation (Details) - USD ($)	12 Months Ended
	Feb. 28, 2022	Feb. 28, 2021
Income Tax Disclosure [Abstract]
Expected federal income tax	$ 609,883	$ 283,052
State tax, net of federal	37,894	27,102
Research and development tax credits	101,573	105,320
Permanent differences	(179,320)	12,719
Other	(5,253)	9,672
Income tax expense	$ 361,631	$ 227,225