TREA

Jun Katsumata

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Earphone
    • Patent number D701854
    • Issue date Apr 1, 2014
    • Sony Corporation
    • Jun Katsumata
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone
    • Patent number D670274
    • Issue date Nov 6, 2012
    • Sony Corporation
    • Jun Katsumata
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone
    • Patent number D668631
    • Issue date Oct 9, 2012
    • Sony Corporation
    • Jun Katsumata
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone
    • Patent number D653243
    • Issue date Jan 31, 2012
    • Sony Corporation
    • Jun Katsumata
    • D14 - Recording, communication, or information retrieval equipment