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Longfei YI

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electronic component
    • Patent number 12,334,895
    • Issue date Jun 17, 2025
    • TDK Corporation
    • Longfei Yi
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Filter circuit and multilayered filter device
    • Patent number 12,323,122
    • Issue date Jun 3, 2025
    • TDK Corporation
    • Masahiro Tatematsu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Filter circuit and multilayered filter device
    • Patent number 12,308,813
    • Issue date May 20, 2025
    • TDK Corporation
    • Shuhei Sawaguchi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Multilayered filter device
    • Patent number 12,308,502
    • Issue date May 20, 2025
    • TDK Corporation
    • Longfei Yi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Multilayered filter device
    • Patent number 12,294,131
    • Issue date May 6, 2025
    • TDK Corporation
    • Longfei Yi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Multi-layered band-pass filter device
    • Patent number 12,218,396
    • Issue date Feb 4, 2025
    • TDK Corporation
    • Longfei Yi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Band-pass filter
    • Patent number 11,955,681
    • Issue date Apr 9, 2024
    • TDK Corporation
    • Honoka Atsuchi
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

  • Information Patent Application

    ELECTRONIC COMPONENT
    • Publication number 20250087414
    • Publication date Mar 13, 2025
    • TDK Corporation
    • Longfei YI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    ELECTRONIC COMPONENT
    • Publication number 20240022225
    • Publication date Jan 18, 2024
    • TDK Corporation
    • Longfei YI
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    FILTER CIRCUIT AND MULTILAYERED FILTER DEVICE
    • Publication number 20230253945
    • Publication date Aug 10, 2023
    • TDK Corporation
    • Masahiro TATEMATSU
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    FILTER CIRCUIT AND MULTILAYERED FILTER DEVICE
    • Publication number 20230246621
    • Publication date Aug 3, 2023
    • TDK Corporation
    • Shuhei SAWAGUCHI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    FILTER
    • Publication number 20230143899
    • Publication date May 11, 2023
    • TDK Corporation
    • Longfei YI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    MULTILAYERED FILTER DEVICE
    • Publication number 20230130049
    • Publication date Apr 27, 2023
    • TDK Corporation
    • Longfei YI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    MULTILAYERED FILTER DEVICE
    • Publication number 20230127771
    • Publication date Apr 27, 2023
    • TDK Corporation
    • Longfei YI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    BAND-PASS FILTER
    • Publication number 20220209380
    • Publication date Jun 30, 2022
    • TDK Corporation
    • Honoka ATSUCHI
    • H01 - BASIC ELECTRIC ELEMENTS