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EP 4 139 495 A2

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(88) Date of publication A3: 02.12.2021 (43) Date of publication: 01.03.2023 Bulletin 2023/09 (21) Application number: 21725329.3 (22) Date of filing: 23.04.2021

(51) International Patent Classification (IPC):  C23C 2/12(2006.01) C23C 8/12(2006.01) C23C 8/80(2006.01) C23C 22/82(2006.01) C25D 11/18(2006.01) C22C 21/00(2006.01) C23C 8/10(2006.01) C23C 8/16(2006.01) C23C 22/56(2006.01) C25D 11/04(2006.01) C22F 1/04(2006.01) (52) Cooperative Patent Classification (CPC): C25D 11/18; C23C 22/82; C22F 1/04; C22C 21/00; C25D 11/024; C25D 11/04; C23C 22/12; C23C 22/361 (86) International application number: PCT/US2021/028766 (87) International publication number: WO 2021/216950 (28.10.2021 Gazette 2021/43)

(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: 24.04.2020 US 202063015056 P (71) Applicant: Novelis, Inc. Atlanta, GA 30326 (US)

(72) Inventors: MACFARLANE, Theresa Elizabeth Kennesaw, Georgia 30144 (US) SCRUGGS, Max Kennesaw, Georgia 30144 (US) CUMARANATUNGE, Lasitha Kennesaw, Georgia 30144 (US) JOHNSON, Kevin Mark Kennesaw, Georgia 30144 (US) PARADIS, Brian Kennesaw, Georgia 30144 (US) PIROTEALA, Tudor Kennesaw, Georgia 30144 (US) REDMOND, Peter Lloyd Kennesaw, Georgia 30144 (US) BENDZINSKI, Duane Kennesaw, Georgia 30144 (US) BECK, Thomas Kennesaw, Georgia 30144 (US) BECKMAN, Thomas John Kennesaw, Georgia 30144 (US) (74) Representative: Feller, Frank  Weickmann & Weickmann Patent- und Rechtsanwälte PartmbB Postfach 860 820 81635 München 81635 München (DE)