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Note 5 - Commitments and Contingencies (Details Textual) - VTT Technical Research Centre of Finland Ltd [Member] - EUR (€)	3 Months Ended	9 Months Ended
	Mar. 31, 2025	Sep. 30, 2024	Jan. 31, 2024
Collaborative Arrangement, Payment for Additional Development and Commercialization			€ 186,000
Collaborative Arrangement, Payment for Research and Development Agreement		€ 93,000
Forecast [Member]
Collaborative Arrangement, Payment for Research and Development Agreement	€ 93,000

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- Definition

Represents payments for additional development and commercialization for collaborative arrangement.

+ References

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- Definition

Represents payment for research and development agreement for collaborate arrangement.

+ References

No definition available.

+ Details

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- Details

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- Details

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