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EP 4 584 413 A1

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(43) Date of publication: 16.07.2025 Bulletin 2025/29 (21) Application number: 22783242.5 (22) Date of filing: 09.09.2022

(51) International Patent Classification (IPC):  C22F 1/00(2006.01) C22F 1/053(2006.01) C22F 1/057(2006.01) C22F 1/047(2006.01) C22F 1/05(2006.01) (52) Cooperative Patent Classification (CPC): C22F 1/002; C22F 1/057; C22F 1/047; C22F 1/05; C22F 1/053 (86) International application number: PCT/US2022/076177 (87) International publication number: WO 2024/054235 (14.03.2024 Gazette 2024/11)

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

(72) Inventors: SON, ChangOok Kennesaw, Georgia 30144 (US) HO, John Min Kennesaw, Georgia 30144 (US) KAPOOR, Monica Kennesaw, Georgia 30144 (US) ROY, Debdutta Kennesaw, Georgia 30144 (US) KIDWELL, Carolyn Grace Kennesaw, Georgia 30144 (US) KEIM, Doug Kennesaw, Georgia 30144 (US) GAENSBAUER, David Anthony Kennesaw, Georgia 30144 (US) KAMAT, Rajeev G. Kennesaw, Georgia 30144 (US) (74) Representative: Weickmann & Weickmann PartmbB  Postfach 860 820 81635 München 81635 München (DE)