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Kenta Kumagai

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Magnetic disk storage unit for electronic computer
    • Patent number D733134
    • Issue date Jun 30, 2015
    • Hitachi, Ltd.
    • Toshiyuki Utsuki
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Magnetic disk storage unit for electronic computer
    • Patent number D733135
    • Issue date Jun 30, 2015
    • Hitachi, Ltd.
    • Toshiyuki Utsuki
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Magnetic disc storage unit for electronic computer
    • Patent number D730894
    • Issue date Jun 2, 2015
    • Hitachi, Ltd.
    • Junpei Hokari
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Magnetic disk storage unit for electronic computer
    • Patent number D690694
    • Issue date Oct 1, 2013
    • Hitachi, Ltd.
    • Toshiyuki Utsuki
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Magnetic disc storage unit for electronic computer
    • Patent number D650383
    • Issue date Dec 13, 2011
    • Hitachi, Ltd.
    • Toshiyuki Utsuki
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Computer
    • Patent number D479230
    • Issue date Sep 2, 2003
    • Hitachi, Ltd.
    • Shingo Hirose
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Front panel of a storage unit
    • Patent number D460886
    • Issue date Jul 30, 2002
    • Hitachi, Ltd.
    • Sayuri Hashizume
    • D06 - Furnishings
  • Information Patent Grant

    Computer housing
    • Patent number D444148
    • Issue date Jun 26, 2001
    • Hitachi, Ltd.
    • Sayuri Hashizume
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Magnetic disc storage unit for electronic computer
    • Patent number D440564
    • Issue date Apr 17, 2001
    • Hitachi, Ltd.
    • Takashi Ohwada
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Computer
    • Patent number D432534
    • Issue date Oct 24, 2000
    • Hitachi, Ltd.
    • Shingo Hirose
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Computer housing
    • Patent number D427191
    • Issue date Jun 27, 2000
    • Hitachi, Ltd.
    • Sayuri Hashizume
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Computer housing
    • Patent number D394246
    • Issue date May 12, 1998
    • Hitachi, Ltd.
    • Takashi Yamamoto
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Computer
    • Patent number D389464
    • Issue date Jan 20, 1998
    • Hitachi, Ltd.
    • Toshiyuki Utsuki
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    ATM communication apparatus
    • Patent number D374965
    • Issue date Oct 22, 1996
    • Hitachi, Ltd.
    • Toshiyuki Utsuki
    • D99 -
  • Information Patent Grant

    Computer
    • Patent number D371347
    • Issue date Jul 2, 1996
    • Hitachi, Ltd.
    • Toshiyuki Utsuki
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Combined facsimile transceiver and copying machine
    • Patent number D332258
    • Issue date Jan 5, 1993
    • Hitachi, Ltd.
    • Atsuhiko Urushihara
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Television receiver
    • Patent number D317600
    • Issue date Jun 18, 1991
    • Hitachi, Ltd.
    • Yoshiaki Amano
    • D14 - Recording, communication, or information retrieval equipment