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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 |
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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 |  |

X
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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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