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Patents (Schedule of patents) (Details) - Patents [Member] - USD ($)
12 Months Ended
Oct. 31, 2025
Oct. 31, 2024
Disclosure Of Information About Patents [Line Items]    
Patents, beginning of period $ 0 $ 0
Additions 0 0
Disposition 0 0
Foreign exchange 0 0
Patents, end of period 0 0
Cost [Member]    
Disclosure Of Information About Patents [Line Items]    
Patents, beginning of period 681,288 681,288
Additions 0 0
Disposition 0 0
Foreign exchange 0 0
Patents, end of period 681,288 681,288
Accumulated amortization [Member]    
Disclosure Of Information About Patents [Line Items]    
Patents, beginning of period (681,288) (681,288)
Additions 0 0
Disposition 0 0
Foreign exchange 0 0
Patents, end of period $ (681,288) $ (681,288)