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EP 4 256 112 A1

(12)

(43) Date of publication: 11.10.2023 Bulletin 2023/41 (21) Application number: 21823287.4 (22) Date of filing: 02.12.2021

(51) International Patent Classification (IPC):  C25D 21/18(2006.01) C02F 1/44(2023.01) C25D 17/00(2006.01) C25D 21/20(2006.01) B01D 61/36(2006.01) C23C 18/16(2006.01) (52) Cooperative Patent Classification (CPC): C25D 21/18; C25D 21/20; C02F 1/447; B01D 61/364; C25D 17/00; C23C 18/1617; C23C 18/1628; B01D 2311/25; B01D 61/368; B01D 2311/04; B01D 2311/263; C02F 2301/046; C02F 2303/10; C02F 2103/16; C02F 2101/20; C02F 1/06; Y02W 10/30 (86) International application number: PCT/EP2021/083991 (87) International publication number: WO 2022/117737 (09.06.2022 Gazette 2022/23)

(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: 04.12.2020 DE 102020132319 (71) Applicant: AT & S Austria Technologie & Systemtechnik Aktiengesellschaft 8700 Leoben-Hinterberg (AT)	(72) Inventor: ROSSMANN, Thomas 8342 Gnas (AT) (74) Representative: Dilg, Haeusler, Schindelmann Patentanwaltsgesellschaft mbH  Leonrodstraße 58 80636 München 80636 München (DE)