(19)

(11)

EP 4 771 209 A1

(12)

(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 24761198.1 (22) Date of filing: 21.08.2024

(51) International Patent Classification (IPC):  C25B 1/46(2006.01) C25B 15/02(2021.01) C25B 9/77(2021.01) C25B 15/08(2006.01) (52) Cooperative Patent Classification (CPC): C25B 1/46; C25B 9/77; C25B 15/08; C25B 15/02 (86) International application number: PCT/EP2024/073474 (87) International publication number: WO 2025/045695 (06.03.2025 Gazette 2025/10)

(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: GE KH MA MD TN (30) Priority: 28.08.2023 EP 23193747 (71) Applicant: thyssenkrupp nucera AG & Co. KGaA 44269 Dortmund (DE)	(72) Inventors: FUNCK, Frank 58730 Fröndenberg/Ruhr (DE) HOORMANN, Dirk 59368 Werne a.d. Lippe (DE) WAGNER, Michael 42115 Wuppertal (DE) GROSSHOLZ, Michael 51375 Leverkusen (DE) BULAN, Andreas 40764 Langenfeld (DE) KOLBE, Jörg 44789 Bochum (DE) KÖBERLE, Stephan 01936 Königsbrück (DE) (74) Representative: thyssenkrupp Intellectual Property GmbH  ThyssenKrupp Allee 1 45143 Essen 45143 Essen (DE)