(19)

(11)

EP 4 308 747 A1

(12)

(43) Date of publication: 24.01.2024 Bulletin 2024/04 (21) Application number: 22703500.3 (22) Date of filing: 19.01.2022

(51) International Patent Classification (IPC):  C23C 22/50(2006.01) C23C 22/78(2006.01) C23C 22/34(2006.01) C25D 13/22(2006.01) C23C 22/56(2006.01) C23C 22/80(2006.01) C23C 22/42(2006.01) (52) Cooperative Patent Classification (CPC): C23C 22/50; C23C 22/56; C23C 22/78; C23C 22/80; C23C 22/42; C23C 22/34; C25D 13/22 (86) International application number: PCT/US2022/012961 (87) International publication number: WO 2022/197358 (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 202163163353 P (71) Applicant: PPG Industries Ohio Inc. Cleveland, OH 44111 (US)	(72) Inventors: KUMAR, Kuldeep Pittsburgh, Pennsylvania 15229 (US) BROWN-TSENG, Elizabeth Stephenie Gibsonia, Pennsylvania 15044 (US) HARRIS, Rachel Dory Pittsburgh, Pennsylvania 15201 (US) MCMILLEN, Mark William Cabot, Pennsylvania 16023 (US) (74) Representative: f & e patent  Braunsberger Feld 29 51429 Bergisch Gladbach 51429 Bergisch Gladbach (DE)