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EP 4 505 493 A1

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(43) Date of publication: 12.02.2025 Bulletin 2025/07 (21) Application number: 23728492.2 (22) Date of filing: 04.05.2023

(51) International Patent Classification (IPC):  H01F 3/14(2006.01) H01F 27/28(2006.01) (52) Cooperative Patent Classification (CPC): H01F 3/14; H01F 27/2804; H01F 2027/2814; H01F 2027/2819 (86) International application number: PCT/US2023/021058 (87) International publication number: WO 2023/224818 (23.11.2023 Gazette 2023/47)

(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: 16.05.2022 US 202217663538 16.05.2022 US 202217663543 16.05.2022 US 202217663547 (71) Applicant: Apple Inc. Cupertino CA 95014 (US)	(72) Inventors: PHADKE, Vijay G Cupertino, California 95014 (US) MADDINENI, Prudhvi Mohan Cupertino, California 95014 (US) KHAN, Balal Cupertino, California 95014 (US) (74) Representative: COPA Copenhagen Patents  Rosenørns Allé 1, 2nd floor 1970 Frederiksberg C 1970 Frederiksberg C (DK)