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EP 4 578 033 A1

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(43) Date of publication: 02.07.2025 Bulletin 2025/27 (21) Application number: 23761062.1 (22) Date of filing: 15.08.2023

(51) International Patent Classification (IPC):  H01F 1/24(2006.01) B22F 1/102(2022.01) H01F 41/02(2006.01) B22F 1/16(2022.01) (52) Cooperative Patent Classification (CPC): H01F 1/24; H01F 41/0246; B22F 1/16; B22F 1/102; B22F 1/09; C22C 2202/02; B22F 1/05; B22F 2998/10; H01F 3/08   C-Sets: B22F 2998/10, B22F 3/02, B22F 3/1021, B22F 2201/03, B22F 2201/02, B22F 2201/05; (86) International application number: PCT/EP2023/072456 (87) International publication number: WO 2024/041930 (29.02.2024 Gazette 2024/09)

(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: 24.08.2022 EP 22191925 (71) Applicant: Höganäs AB (publ) 263 83 Höganäs (SE)	(72) Inventors: SKÅRMAN, Björn 263 33 Höganäs (SE) YE, Zhou 26352 Lerberget (SE) JÖNSSON, Christian 21774 Malmö (SE) (74) Representative: Höganäs AB (publ)  Bruksgatan 35 26383 Höganäs 26383 Höganäs (SE)