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(11)

EP 3 847 289 A1

(12)

(43) Date of publication: 14.07.2021 Bulletin 2021/28 (21) Application number: 19769682.6 (22) Date of filing: 03.09.2019

(51) International Patent Classification (IPC):  C22C 21/02(2006.01) C22F 1/043(2006.01) C22C 21/10(2006.01) C22F 1/053(2006.01) (86) International application number: PCT/US2019/049324 (87) International publication number: WO 2020/051129 (12.03.2020 Gazette 2020/11)

(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: 06.09.2018 US 201862727806 P (71) Applicant: Novelis, Inc. Atlanta, GA 30326 (US)	(72) Inventors: KADALI, Jyothi Woodstock, Georgia 30188 (US) DASCH, Kyle Alpharetta, Georgia 30022 (US) WOODS, Julia L. Kennesaw, Georgia 30152 (US) (74) Representative: Dey, Michael  Weickmann & Weickmann Patent- und Rechtsanwälte PartmbB Postfach 860 820 81635 München 81635 München (DE)