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(11)

EP 4 093 563 A1

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(43) Date of publication: 30.11.2022 Bulletin 2022/48 (21) Application number: 21709159.4 (22) Date of filing: 14.01.2021

(51) International Patent Classification (IPC):  B21D 51/26(2006.01) C22C 21/00(2006.01) C22C 21/08(2006.01) B21D 22/28(2006.01) C22C 21/06(2006.01) C22F 3/00(2006.01) (52) Cooperative Patent Classification (CPC): B21D 51/26; B21D 22/28; C22F 3/00; C22C 21/00; C22C 21/08; C22C 21/06 (86) International application number: PCT/US2021/013347 (87) International publication number: WO 2021/150412 (29.07.2021 Gazette 2021/30)

(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: 23.01.2020 US 202062964741 P (71) Applicant: Novelis, Inc. Atlanta, GA 30326 (US)	(72) Inventors: PARK, Jaesuk Kennesaw, Georgia 30144 (US) ZHU, Dewei Kennesaw, Georgia 30144 (US) NOBREGA, Carlos Kennesaw, Georgia 30144 (US) (74) Representative: Dey, Michael  Weickmann & Weickmann Patent- und Rechtsanwälte PartmbB Postfach 860 820 81635 München 81635 München (DE)