TREA

Yutaro Kumagai

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  • Kanagawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Headphone
    • Patent number D1035611
    • Issue date Jul 16, 2024
    • Audio-Technica Corporation
    • Kodai Tsubone
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Headphone
    • Patent number D1031691
    • Issue date Jun 18, 2024
    • Audio-Technica Corporation
    • Kodai Tsubone
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Battery charger for earphones
    • Patent number D1024942
    • Issue date Apr 30, 2024
    • Audio-Technica Corporation
    • Daisuke Yoneyama
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Headphone
    • Patent number D1018495
    • Issue date Mar 19, 2024
    • Audio-Technica Corporation
    • Kodai Tsubone
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Headphone
    • Patent number D1016779
    • Issue date Mar 5, 2024
    • Audio-Technica Corporation
    • Kodai Tsubone
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone
    • Patent number D997133
    • Issue date Aug 29, 2023
    • Audio-Technica Corporation
    • Daisuke Yoneyama
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Headphone
    • Patent number D938934
    • Issue date Dec 21, 2021
    • Audio-Technica Corporation
    • Kodai Tsubone
    • D14 - Recording, communication, or information retrieval equipment