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(11)

EP 4 399 339 A1

(12)

(43) Date of publication: 17.07.2024 Bulletin 2024/29 (21) Application number: 22786597.9 (22) Date of filing: 09.09.2022

(51) International Patent Classification (IPC):  C22C 21/02(2006.01) C22F 1/043(2006.01) C22F 1/04(2006.01) (52) Cooperative Patent Classification (CPC): C22F 1/043; C22F 1/04; C22C 21/02 (86) International application number: PCT/US2022/043021 (87) International publication number: WO 2023/039141 (16.03.2023 Gazette 2023/11)

(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 (30) Priority: 09.09.2021 US 202163261042 P (71) Applicant: Novelis Inc. Atlanta, GA 30326 (US)	(72) Inventors: FLOREY, Guillaume Kennesaw, GA 30144 (US) LIANG, Zeqin Kennesaw, GA 30144 (US) PRALONG, Antoine, Jean, Willy Kennesaw, GA 30144 (US) BARMAN, Géraldine Kennesaw, GA 30144 (US) FRIEDLI, Jonathan Kennesaw, GA 30144 (US) (74) Representative: Weickmann & Weickmann PartmbB  Postfach 860 820 81635 München 81635 München (DE)