Patents (Tables)

12 Months Ended

Oct. 31, 2022

Intangible assets and goodwill [abstract]

Disclosure of detailed information about patents [Table Text Block]

		As at							As at
		November 1,							October 31,
		2021		Additions			Disposals		2022
Cost	$	681,288	$	-		$	-	$	681,288
Accumulated amortization		677,411		3,877			-		681,288
Net book value	$	3,877	$	(3,877	)	$	-	$	-

 

		As at							As at
		November 1,							October 31,
		2020		Additions			Disposals		2021
Cost	$	681,288	$	-		$	-	$	681,288
Accumulated amortization		669,411		8,000			-		677,411
Net book value	$	11,877	$	(8,000	)	$	-	$	3,877