(19)

(11)

EP 3 994 743 A1

(12)

(43) Date of publication: 11.05.2022 Bulletin 2022/19 (21) Application number: 20837301.9 (22) Date of filing: 06.07.2020

(51) International Patent Classification (IPC):  H01M 4/133(2010.01) H01G 11/36(2013.01) H01M 4/139(2010.01) (52) Cooperative Patent Classification (CPC): H01G 11/36; H01M 4/131; H01M 4/134; H01M 4/1391; H01M 4/1395; H01M 4/525; H01M 4/48; H01M 4/386; H01M 4/364; H01M 4/587; H01M 4/621; H01M 4/625; H01M 10/052; H01M 4/0404; H01M 4/049; H01M 4/0471; H01G 11/86; Y02T 10/70; Y02E 60/10 (86) International application number: PCT/US2020/040943 (87) International publication number: WO 2021/007183 (14.01.2021 Gazette 2021/02)

(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: 05.07.2019 US 201962871041 P 19.07.2019 US 201962876124 P 30.12.2019 US 201962954771 P 01.04.2020 US 202063003341 P 19.06.2020 US 202063041801 P (71) Applicants: FastCAP Systems Corporation Boston, MA 02210 (US) Brambilla, Nicolo Boston, MA 02210 (US) Cao, Wanjun, Ben Boston, MA 02210 (US) Yan, Jin East Boston, MA 02210 (US) Chen, Xujie Boston, MA 02210 (US) Du, Ting Boston, MA 02210 (US) Park, Kitae Boston, MA 02210 (US)

(72) Inventors: BRAMBILLA, Nicolo Boston, MA 02210 (US) CAO, Wanjun, Ben Boston, MA 02210 (US) YAN, Jin Boston, MA 02210 (US) CHEN, Xujie Boston, MA 02210 (US) DU, Ting Boston, MA 02210 (US) PARK, Kitae Boston, MA 02210 (US) (74) Representative: HGF  HGF Limited 1 City Walk Leeds LS11 9DX Leeds LS11 9DX (GB)