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EP 4 298 268 A1

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(43) Date of publication: 03.01.2024 Bulletin 2024/01 (21) Application number: 22707059.6 (22) Date of filing: 15.02.2022

(51) International Patent Classification (IPC):  C25B 1/04(2021.01) C25B 3/07(2021.01) C25B 9/13(2021.01) C25B 9/67(2021.01) C12M 1/42(2006.01) C12M 1/107(2006.01) C25B 3/03(2021.01) C25B 3/26(2021.01) C25B 9/19(2021.01) C25B 15/021(2021.01) C12P 5/02(2006.01) (52) Cooperative Patent Classification (CPC): C25B 1/04; C25B 3/03; C25B 3/07; C25B 3/26; C25B 9/13; C25B 9/19; C25B 9/67; C25B 15/021; C12P 5/023 (86) International application number: PCT/EP2022/053641 (87) International publication number: WO 2022/179885 (01.09.2022 Gazette 2022/35)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 25.02.2021 DE 202021100957 U 18.05.2021 DE 102021112844 (71) Applicant: ELECTROCHAEA GMBH 82152 Planegg (DE)	(72) Inventors: PATEL, Nitant 82152 Planegg (DE) LEWANDOWSKI, Birgit 82152 Planegg (DE) PINDER, Zachary 82152 Planegg (DE) HAFENBRADL, Doris 82152 Planegg (DE) RODRIGO, Jose 82152 Planegg (DE) (74) Representative: Fleuchaus & Gallo Partnerschaft mbB  Steinerstraße 15/A 81369 München 81369 München (DE)