TREA

Sayo Matsubara

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  • Kanagawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Headphone
    • Patent number D894151
    • Issue date Aug 25, 2020
    • Audio-Technica Corporation
    • Takaya Nagamine
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Headphone
    • Patent number D893450
    • Issue date Aug 18, 2020
    • Audio-Technica Corporation
    • Sayo Matsubara
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Headphone
    • Patent number D893451
    • Issue date Aug 18, 2020
    • Audio-Technica Corporation
    • Takaya Nagamine
    • D14 - Recording, communication, or information retrieval equipment