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Keiichi Obara

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  • Hachioji, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Communication system
    • Patent number 6,226,268
    • Issue date May 1, 2001
    • Kabushiki Kaisha Toshiba
    • Tomoo Kunikyo
    • G08 - SIGNALLING
  • Information Patent Grant

    Voice signal transmitting method and exchange system using this
    • Patent number 6,038,237
    • Issue date Mar 14, 2000
    • Kabushiki Kaisha Toshiba
    • Hidekazu Tsuruta
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Communication system
    • Patent number 6,034,944
    • Issue date Mar 7, 2000
    • Kabushiki Kaisha Toshiba
    • Yutaka Seki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Broadband switching networks
    • Patent number 5,566,179
    • Issue date Oct 15, 1996
    • Kabushiki Kaisha Toshiba
    • Hiroshi Kobayashi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    ATM exchange system
    • Patent number 5,204,857
    • Issue date Apr 20, 1993
    • Kabushiki Kaisha Toshiba
    • Keiichi Obara
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Multiplex communication system
    • Patent number 4,924,458
    • Issue date May 8, 1990
    • Kabushiki Kaisha Toshiba
    • Keiichi Obara
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Method and apparatus for sending data
    • Patent number 4,771,335
    • Issue date Sep 13, 1988
    • Kabushiki Kaisha Toshiba
    • Keiichi Obara
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE