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EP 4 284 956 A1

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(43) Date of publication: 06.12.2023 Bulletin 2023/49 (21) Application number: 22705340.2 (22) Date of filing: 26.01.2022

(51) International Patent Classification (IPC):  C22C 21/06(2006.01) C22C 1/02(2006.01) C22C 21/08(2006.01) C22F 1/047(2006.01) (52) Cooperative Patent Classification (CPC): C22C 21/06; C22C 21/08; C22C 1/026; C22F 1/047 (86) International application number: PCT/US2022/070364 (87) International publication number: WO 2022/165492 (04.08.2022 Gazette 2022/31)

(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: 26.01.2021 US 202163199806 P (71) Applicant: Novelis, Inc. Atlanta, GA 30326 (US)	(72) Inventors: WAGSTAFF, Robert Bruce Kennesaw, Georgia 30144 (US) WAGSTAFF, Samuel Robert Kennesaw, Georgia 30144 (US) SUNDARAM, Kumar Kennesaw, Georgia 30144 (US) MORAIS, Carlos R. Kennesaw, Georgia 30144 (US) BARKER, Simon William Kennesaw, Georgia 30144 (US) (74) Representative: Weickmann & Weickmann PartmbB  Postfach 860 820 81635 München 81635 München (DE)