Income taxes (Tables)

12 Months Ended

Oct. 31, 2024

Notes to Financial Statements [Abstract]

Disclosure of detailed information about effective income tax expense (recovery) [Table Text Block]

		2024			2023			2022
Loss before income taxes	$	(3,062,798	)	$	(2,691,670	)	$	(2,287,095	)
Statutory tax rate		26.5%			26.5%			26.5%
Expected income tax recovery	$	(811,641	)	$	(713,293	)	$	(606,080	)
Accretion expense and loss (gain) on convertible debentures and derivative liabilities		224,771			283,688			269,531
Stock-based compensation		1,727			57,761			10,992
Non-deductible (non-taxable) expenses and financing costs		239,387			(13,660)			(3,780	)
Effect of changes in exchange rates		30,403			74,714			940,577
Change in deferred tax assets not recognized		315,353			310,790			(611,240	)
	$	-		$	-		$	-

Disclosure of deferred taxes [Table Text Block]

		2024			2023			2022
Non-capital losses	$	9,163,035		$	8,833,940		$	8,485,255
Capital losses		159,162			159,671			162,275
Property, equipment, patents and deferred costs		1,591,255			1,605,743			1,639,306
	$	10,913,452		$	10,599,354		$	10,286,836
Deferred tax asset not recognized		(10,913,452	)		(10,599,354	)		(10,286,836	)
	$	-		$	-		$	-

Disclosure of unused tax losses [Table Text Block]

		Canada		United States		Total
2026	$	1,726,462	$	-	$	1,726,462
2027		1,451,819		-		1,451,819
2028		-		-		-
2029		1,487,922		143,721		1,631,643
2030		2,007,595		1,880,897		3,888,492
2031		1,209,514		18,526		1,228,040
2032		1,340,456		325,793		1,666,249
2033		1,624,764		157,463		1,782,227
2034		2,350,482		679,089		3,029,571
2035		2,656,250		570,901		3,227,151
2036		3,117,259		441,019		3,558,278
2037		2,495,456		232,714		2,728,170
2038		1,687,021		317		1,687,338
2039		1,509,112		-		1,509,112
2040		508,349		-		508,349
2041		880,801		-		880,801
2042		1,250,158		-		1,250,158
2043		1,484,853		-		1,484,853
2044		1,338,776		-		1,338,776
	$	30,127,050	$	4,450,440	$	34,577,490