Note 9 - Income Tax - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)	Sep. 30, 2025	Sep. 30, 2024
Research and development tax credits	$ 1,510,000	$ 1,504,000
Share issuance and financing costs	314,000	381,000
Right-of-use lease liabilities	0	5,000
Other temporary differences	21,000	21,000
Subtotal	19,864,000	18,200,000
Less: valuation allowance	(19,733,000)	(18,074,000)
Total net deferred tax assets	131,000	126,000
Property and equipment	(3,000)	(2,000)
Right-of-use assets	0	(5,000)
Grant Income receivable	(129,000)	(71,000)
Deferred share issuance costs	1,000	(48,000)
Total deferred tax liabilities	(131,000)	(126,000)
Net deferred taxes	0	0
Canada Revenue Agency [Member]
Non-capital losses carried forward - Canada	17,270,000	15,547,000
Internal Revenue Service (IRS) [Member]
Non-capital losses carried forward - U.S.	$ 749,000	$ 742,000