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(11)

EP 4 547 890 A1

(12)

(43) Date of publication: 07.05.2025 Bulletin 2025/19 (21) Application number: 23736127.4 (22) Date of filing: 29.06.2023

(51) International Patent Classification (IPC):  C25B 1/04(2021.01) C25B 9/015(2021.01) C25B 9/65(2021.01) C25B 9/01(2021.01) C25B 9/05(2021.01) C25B 11/02(2021.01) (52) Cooperative Patent Classification (CPC): C25B 9/05; C25B 9/015; C25B 9/01; C25B 1/04; C25B 9/65; C25B 9/66; C25B 11/02; Y02E 60/36 (86) International application number: PCT/EP2023/067863 (87) International publication number: WO 2024/003272 (04.01.2024 Gazette 2024/01)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 29.06.2022 EP 22181783 (71) Applicant: DAES SA 1213 Petit Lancy Geneva (CH)	(72) Inventor: PLEWINSKI, François 1213 Petit-Lancy (CH) (74) Representative: KATZAROV S.A.  Geneva Business Center 12 Avenue des Morgines 1213 Petit-Lancy 1213 Petit-Lancy (CH)