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Note 10 - Income Tax - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)	Sep. 30, 2024	Sep. 30, 2023
Research and development tax credits	$ 1,504,000	$ 1,371,000
Share issuance and financing costs	381,000	585,000
Right-of-use lease liabilities	5,000	25,000
Other temporary differences	21,000	44,000
Subtotal	18,200,000	16,699,000
Less: valuation allowance	(18,074,000)	(16,466,000)
Total net deferred tax assets	126,000	233,000
Property and equipment	(2,000)	(3,000)
Right-of-use assets	(5,000)	(24,000)
Grant Income receivable	(71,000)	(153,000)
Deferred share issuance costs	(48,000)	(53,000)
Total deferred tax liabilities	(126,000)	(233,000)
Net deferred taxes	0	0
Canada Revenue Agency [Member]
Non-capital losses carried forward - Canada	15,547,000	13,943,000
Internal Revenue Service (IRS) [Member]
Non-capital losses carried forward - U.S.	$ 742,000	$ 731,000

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-Section 50
-Paragraph 2
-Subparagraph (b)
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