Income taxes (Tables)

12 Months Ended

Oct. 31, 2018

Statements Line Items

Disclosure of unused tax losses

		Canada		Other foreign		Total
2026	$	1,826,168	$	-	$	1,826,168
2027		1,535,663		-		1,535,663
2028		-		-		-
2029		1,573,852		452,762		2,026,614
2030		2,123,536		1,880,897		4,004,433
2031		1,279,365		18,526		1,297,891
2032		1,417,868		325,793		1,743,661
2033		1,718,596		157,463		1,876,059
2034		2,486,226		679,089		3,165,315
2035		2,809,651		570,901		3,380,552
2036		3,297,284		441,019		3,738,303
2037		2,639,572		232,719		2,872,291
2038		1,625,600		-		1,625,600
	$	24,333,381	$	4,759,169	$	29,092,550

Disclosure of deferred taxes

		2018			2017			2016
Non-capital losses and other	$	7,698,859		$	7,277,434		$	7,139,329
Capital losses		175,090			350,180			165,164
Property, equipment, patents and deferred costs		1,567,228			1,598,394			1,769,064
Share issuance costs		-			-			1,881
	$	9,441,177		$	9,226,008		$	9,075,438
Deferred tax asset not recognized		(9,441,177	)		(9,226,008	)		(9,075,438	)
	$	-		$	-		$	-

Disclosure of detailed information about effective income tax expense recovery

		2018			2017			2016
Loss before income taxes	$	(2,362,239	)	$	(4,346,200	)	$	(6,805,535	)
Statutory tax rate		26.50%			26.50%			26.50%
Expected income tax recovery	$	(625,993	)	$	(1,151,743	)	$	(1,803,467	)
Non-deductible expenses and other items		182,056			413,499			130,211
Effect of exchange rate on deferred tax assets carried forward		225,846			424,023			142,518
Effect of higher tax rates in foreign jurisdiction		-			163,651			(446,821	)
Change in deferred income tax rates and other		-			-			1,641,838
Change in deferred tax assets not recognized		218,091			150,570			335,721
	$	-		$	-		$	-