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Significant Accounting Policies - Fair values of financial assets of the Company (Details) - USD ($)	12 Months Ended
	Feb. 28, 2022	Feb. 28, 2021
Marketable Securities	$ 5,867,990	$ 4,563,470
Accumulated amortization of patents	192,490	181,922
Annual amortization expense this year	11,000
Annual amortization expense year two	11,000
Annual amortization expense year three	11,000
Annual amortization expense year four	11,000
Annual amortization expense year five	$ 11,000
Land and Buildings
Estimated useful life	40 years
Domestic Patents
Useful life of intangible assets	17 years
Foreign Patents
Useful life of intangible assets	12 years
Fair Value, Inputs, Level 1 [Member]
Marketable Securities	$ 5,716,338	4,261,927
Fair Value, Inputs, Level 2 [Member]
Marketable Securities	151,652	301,543
Fair Value, Inputs, Level 3 [Member]
Marketable Securities

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