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EP 4 308 748 A1

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(43) Date of publication: 24.01.2024 Bulletin 2024/04 (21) Application number: 22704052.4 (22) Date of filing: 19.01.2022

(51) International Patent Classification (IPC):  C23C 22/57(2006.01) C23C 22/80(2006.01) C23C 22/78(2006.01) C25D 13/22(2006.01) (52) Cooperative Patent Classification (CPC): C23C 22/78; C23C 22/80; C23C 22/57; C25D 13/22; C25D 9/08; C25D 11/00; C25D 13/20 (86) International application number: PCT/US2022/012889 (87) International publication number: WO 2022/197357 (22.09.2022 Gazette 2022/38)

(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: 19.03.2021 US 202163163387 P (71) Applicant: PPG Industries Ohio Inc. Cleveland, OH 44111 (US)

(72) Inventors: KUMAR, Kuldeep Pittsburgh, PA 15229 (US) HARRIS, Rachel Dory Pittsburgh, PA 15201 (US) BROWN-TSENG, Elizabeth Stephenie Gibsonia, PA 15044 (US) ALLEN, Kristi Maree Pittsburgh, PA 15201 (US) BOWLES, Steven Edward Pittsburgh, PA 15215 (US) BEZER, Silvia Gibsonia, PA 15044 (US) LEMON, Steven Joseph Burrell, PA 15068 (US) MCMILLEN, Mark William Cabot, PA 16023 (US) (74) Representative: f & e patent  Braunsberger Feld 29 51429 Bergisch Gladbach 51429 Bergisch Gladbach (DE)