TREA

Keiko Densho

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Earphone
    • Patent number D679682
    • Issue date Apr 9, 2013
    • Sony Corporation
    • Yosuke Shimizu
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone
    • Patent number D637180
    • Issue date May 3, 2011
    • Sony Corporation
    • Yosuke Shimizu
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone
    • Patent number D610129
    • Issue date Feb 16, 2010
    • Sony Corporation
    • Keiko Densho
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone
    • Patent number D598431
    • Issue date Aug 18, 2009
    • Sony Corporation
    • Keiko Densho
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Television receiver
    • Patent number D593975
    • Issue date Jun 9, 2009
    • Sony Corporation
    • Hiroaki Yokota
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone
    • Patent number D591721
    • Issue date May 5, 2009
    • Sony Corporation
    • Keiko Densho
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone
    • Patent number D591722
    • Issue date May 5, 2009
    • Sony Corporation
    • Keiko Densho
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone
    • Patent number D589493
    • Issue date Mar 31, 2009
    • Sony Corporation
    • Keiko Densho
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Headphone
    • Patent number D588100
    • Issue date Mar 10, 2009
    • Sony Corporation
    • Keiko Densho
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone
    • Patent number D587685
    • Issue date Mar 3, 2009
    • Sony Corporation
    • Keiko Densho
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone
    • Patent number D587247
    • Issue date Feb 24, 2009
    • Sony Corporation
    • Keiko Densho
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone
    • Patent number D587248
    • Issue date Feb 24, 2009
    • Sony Corporation
    • Keiko Densho
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone
    • Patent number D587249
    • Issue date Feb 24, 2009
    • Sony Corporation
    • Keiko Densho
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Television receiver
    • Patent number D573561
    • Issue date Jul 22, 2008
    • Sony Corporation
    • Hiroaki Yokota
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Wireless headset
    • Patent number D567216
    • Issue date Apr 22, 2008
    • Sony Corporation
    • Keiko Densho
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Audio player
    • Patent number D525612
    • Issue date Jul 25, 2006
    • Sony Corporation
    • Keiko Densho
    • D14 - Recording, communication, or information retrieval equipment