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SIGNIFICANT ACCOUNTING POLICIES - Fair values of financial assets of the Company (Details) - USD ($)
12 Months Ended
Feb. 28, 2023
Feb. 28, 2022
Marketable Securities $ 8,090,000 $ 5,867,990
Uncertain tax positions $ 0 $ 0
Useful life of intangible assets 17 years 12 years
Accumulated amortization of patents $ 202,681 $ 192,490
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  
Estimated useful life 40 years  
Impairment losses $ 0 0
Fair Value, Inputs, Level 1 [Member]    
Marketable Securities 7,361,000 5,716,338
Fair Value, Inputs, Level 2 [Member]    
Marketable Securities 729,000 151,652
Fair Value, Inputs, Level 3 [Member]    
Marketable Securities