Patents (Tables)

12 Months Ended

Oct. 31, 2019

Intangible assets and goodwill [abstract]

Disclosure of detailed information about patents [Table Text Block]

		November 1,				October 31,							October 31,
		2017		Additions		2018		Additions		Impairment			2019
Cost	$	782,828	$	121,603	$	904,431	$	-	$	(223,143	)	$	681,288
Accumulated amortization		351,366		156,960		508,326		152,962		-			661,288
Net book value	$	431,462			$	396,105						$	20,000