(19)

(11)

EP 4 522 789 A2

(12)

(88) Date of publication A3: 14.03.2024 (43) Date of publication: 19.03.2025 Bulletin 2025/12 (21) Application number: 23728592.9 (22) Date of filing: 03.05.2023

(51) International Patent Classification (IPC):  C25F 5/00(2006.01) (52) Cooperative Patent Classification (CPC): C25F 5/00 (86) International application number: PCT/EP2023/025205 (87) International publication number: WO 2023/217411 (16.11.2023 Gazette 2023/46)

(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: 09.05.2022 DE 102022001617 (71) Applicant: Oerlikon Surface Solutions AG, Pfäffikon 8808 Pfäffikon (CH)	(72) Inventors: MESSE, Olivier Mikael Daniel Marcel 81677 München (DE) KRESSER, Simon Andreas 6841 Mäder (AT) (74) Representative: Bals & Vogel Patentanwälte PartGmbB  Konrad-Zuse-Str. 4 44801 Bochum 44801 Bochum (DE)