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EP 4 214 346 A1

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(43) Date of publication: 26.07.2023 Bulletin 2023/30 (21) Application number: 21789984.8 (22) Date of filing: 16.09.2021

(51) International Patent Classification (IPC):  C22C 21/10(2006.01) C22F 1/053(2006.01) (52) Cooperative Patent Classification (CPC): C22F 1/053; C22C 21/10 (86) International application number: PCT/US2021/050709 (87) International publication number: WO 2022/061011 (24.03.2022 Gazette 2022/12)

(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: 17.09.2020 US 202062706906 P (71) Applicant: Novelis, Inc. Atlanta, GA 30326 (US)

(72) Inventors: YUAN, Yudie Kennesaw, Georgia 30144 (US) BHASKARAN, Ganesh Kennesaw, Georgia 30144 (US) JANOFF, Anna E. Kennesaw, Georgia 30144 (US) WU, Cedric Kennesaw, Georgia 30144 (US) KAMAT, Rajeev G. Kennesaw, Georgia 30144 (US) LEYVRAZ, David Kennesaw, Georgia 30144 (US) (74) Representative: Dey, Michael  Weickmann & Weickmann Patent- und Rechtsanwälte PartmbB Postfach 860 820 81635 München 81635 München (DE)