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EP 4 289 063 A1

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(43) Date of publication: 13.12.2023 Bulletin 2023/50 (21) Application number: 22750225.9 (22) Date of filing: 31.01.2022

(51) International Patent Classification (IPC):  H03F 1/02(2006.01) H03F 3/189(2006.01) H03F 3/185(2006.01) H03F 1/30(2006.01) H03F 3/16(2006.01) H03F 3/193(2006.01) (52) Cooperative Patent Classification (CPC): H03F 3/245; H03F 3/45475; H03F 2203/45526; H03F 3/72; H03F 1/526; H03F 2203/45048; H03F 1/0277; H03F 3/195; H03F 1/0211; H03G 3/3042; H03F 2200/451; H03F 2200/462; H03F 2200/468; H03F 1/301; H03F 2200/471; H03F 2200/519; H03F 2200/522; H03F 2200/525; H03F 1/3211; H01Q 3/28; H01Q 3/38; H01Q 3/2605 (86) International application number: PCT/US2022/014615 (87) International publication number: WO 2022/169715 (11.08.2022 Gazette 2022/32)

(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: 02.02.2021 US 202163144900 P 03.02.2021 US 202163145410 P 20.04.2021 US 202117235875 23.12.2021 US 202117561033 (71) Applicant: Epirus, Inc. Torrance, California 90501 (US)

(72) Inventors: MARR, Harry, Bourne, Jr. Torrance, California 90501 (US) DOWER, William, Griffin Torrance, California 90501 (US) KULTRAN, Denpol Torrance, California 90501 (US) BORISOV, Michael, Alex Torrance, California 90501 (US) LIGON, Ryan, Scott Torrance, California 90501 (US) BUETOW, Scott, William Torrance, California 90501 (US) CARTER, Ross, Charles Torrance, California 90501 (US) CHAVES, Jason, Reis Torrance, California 90501 (US) GRAY, Steven, Deward Torrance, California 90501 (US) (74) Representative: Tiburzi, Andrea et al Barzanò & Zanardo Roma S.p.A. Via Piemonte 26 00187 Roma 00187 Roma (IT)