(19)

(11)

EP 4 217 133 A2

(12)

(88) Date of publication A3: 04.08.2022 (43) Date of publication: 02.08.2023 Bulletin 2023/31 (21) Application number: 21876731.7 (22) Date of filing: 23.09.2021

(51) International Patent Classification (IPC):  B22D 11/049(2006.01) B22D 21/04(2006.01) C22F 1/00(2006.01) B22D 21/00(2006.01) C22C 21/00(2006.01) (52) Cooperative Patent Classification (CPC): C22C 21/00; C22F 1/00; B22D 21/04; B22D 21/007; B22D 11/049 (86) International application number: PCT/US2021/051657 (87) International publication number: WO 2022/093447 (05.05.2022 Gazette 2022/18)

(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: 24.09.2020 US 202063198018 P (71) Applicant: Novelis, Inc. Atlanta, GA 30326 (US)

(72) Inventors: WAGSTAFF, Samuel Robert Marietta, Georgia 30066 (US) HEGADEKATTE, Vishwanath Kennesaw, Georgia 30144 (US) PARDESHI, Ravindra Tarachand Kennesaw, Georgia 30144 (US) SUNDARAM, Kumar Kennesaw, Georgia 30144 (US) SEN, Fatih Gurcag Kennesaw, Georgia 30144 (US) (74) Representative: Dey, Michael  Weickmann & Weickmann Patent- und Rechtsanwälte PartmbB Postfach 860 820 81635 München 81635 München (DE)