(19)

(11)

EP 4 581 316 A1

(12)

(43) Date of publication: 09.07.2025 Bulletin 2025/28 (21) Application number: 23782372.9 (22) Date of filing: 28.08.2023

(51) International Patent Classification (IPC):  F27B 3/20(2006.01) F27B 3/28(2006.01) F27D 19/00(2006.01) C22B 9/22(2006.01) F27D 17/00(2025.01) F27D 21/00(2006.01) (52) Cooperative Patent Classification (CPC): F27B 3/205; F27B 3/20; F27B 3/28; F27D 19/00; F27D 21/00; C22B 9/226; C22B 21/0092; F27D 17/10; F27D 17/20 (86) International application number: PCT/US2023/072975 (87) International publication number: WO 2024/050294 (07.03.2024 Gazette 2024/10)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 31.08.2022 US 202263374119 P (71) Applicant: Novelis Inc. Atlanta, GA 30326 (US)	(72) Inventors: HADLEY, Mark Kennesaw, Georgia 30144 (US) DINSMORE, Steven Kennesaw, Georgia 30144 (US) (74) Representative: Weickmann & Weickmann PartmbB  Postfach 860 820 81635 München 81635 München (DE)