TREA

Kenichi Koyama

Follow

Person

  • Amagasaki, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Voltage fluctuation compensating apparatus
    • Patent number RE40528
    • Issue date Oct 7, 2008
    • Mitsubishi Denki Kabushiki Kaisha
    • Akihiko Iwata
    • 307 - Electrical transmission or interconnection systems
  • Information Patent Grant

    Magnetic actuator
    • Patent number 7,102,475
    • Issue date Sep 5, 2006
    • Mitsubishi Denki Kabushiki Kaisha
    • Takafumi Nakagawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Voltage fluctuation compensating apparatus
    • Patent number 6,956,305
    • Issue date Oct 18, 2005
    • Mitsubishi Denki Kabushiki Kaisha
    • Akihiko Iwata
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Enclosed switchgear
    • Patent number 6,927,356
    • Issue date Aug 9, 2005
    • Mitsubishi Denki Kabushiki Kaisha
    • Shinji Sato
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Operation circuit and power switching device employing the operatio...
    • Patent number 6,882,515
    • Issue date Apr 19, 2005
    • Mitsubishi Denki Kabushiki Kaisha
    • Toshie Takeuchi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Metal-enclosed switchgear
    • Patent number 6,865,072
    • Issue date Mar 8, 2005
    • Mitsubishi Denki Kabushiki Kaisha
    • Shinji Sato
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Voltage fluctuation compensating apparatus
    • Patent number 6,812,592
    • Issue date Nov 2, 2004
    • Mitsubishi Denki Kabushiki Kaisha
    • Akihiko Iwata
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Switching apparatus
    • Patent number 6,624,374
    • Issue date Sep 23, 2003
    • Mitsubishi Denki Kabushiki Kaisha
    • Kenichi Koyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    AQUEOUS DISPERSION FORMING CONDUCTIVE LAYER, CONDUCTIVE LAYER, ELEC...
    • Patent number 6,625,032
    • Issue date Sep 23, 2003
    • JSR Corporation
    • Nobuyuki Ito
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Switching apparatus
    • Patent number 6,611,413
    • Issue date Aug 26, 2003
    • Mitsubishi Denki Kabushiki Kaisha
    • Toshie Takeuchi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Switching device
    • Patent number 6,580,345
    • Issue date Jun 17, 2003
    • Mitsubishi Denki Kabushiki Kaisha
    • Hiroyuki Akita
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vacuum switch including windmill-shaped electrodes
    • Patent number 6,479,778
    • Issue date Nov 12, 2002
    • Mitsubishi Denki Kabushiki Kaisha
    • Toshinori Kimura
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Switchgear
    • Patent number 6,295,192
    • Issue date Sep 25, 2001
    • Mitsubishi Denki Kabushiki Kaisha
    • Yukimori Kishida
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electric power supply system for load
    • Patent number 6,051,893
    • Issue date Apr 18, 2000
    • Mitsubishi Denki Kabushiki Kaisha
    • Hiroshi Yamamoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Switchgear
    • Patent number 6,046,423
    • Issue date Apr 4, 2000
    • Mitsubishi Denki Kabushiki Kaisha
    • Yukimori Kishida
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Switching device with parallel switch
    • Patent number 6,028,471
    • Issue date Feb 22, 2000
    • Mitsubishi Denki Kabushiki Kaisha
    • Kenichi Koyama
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Vacuum interrupter
    • Patent number 5,646,386
    • Issue date Jul 8, 1997
    • Mitsubishi Denki Kabushiki Kaisha
    • Mitsumasa Yorita
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vacuum interrupter
    • Patent number 5,597,993
    • Issue date Jan 28, 1997
    • Mitsubishi Denki Kabushiki Kaisha
    • Mitsumasa Yorita
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vacuum interrupter
    • Patent number 5,495,085
    • Issue date Feb 27, 1996
    • Mitsubishi Denki Kabushiki Kaisha
    • Mitsumasa Yorita
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electromagnetic rail launcher
    • Patent number 5,133,241
    • Issue date Jul 28, 1992
    • Mitsubishi Denki Kabushiki Kaisha
    • Kenichi Koyama
    • F41 - WEAPONS

Patents Applicationslast 30 patents

  • Information Patent Application

    Magnetic actuator
    • Publication number 20050088265
    • Publication date Apr 28, 2005
    • Mitsubishi Denki Kabushiki Kaisha
    • Takafumi Nakagawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Operation circuit and power switching device employing the operatio...
    • Publication number 20040201943
    • Publication date Oct 14, 2004
    • Mitsubishi Denki Kabushiki Kaisha
    • Toshie Takeuchi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Enclosed switchgear
    • Publication number 20040159635
    • Publication date Aug 19, 2004
    • Mitsubishi Denki Kabushiki Kaisha
    • Shinji Sato
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Metal-enclosed switchgear
    • Publication number 20040104201
    • Publication date Jun 3, 2004
    • Mitsubishi Denki Kabushiki Kaisha
    • Shinji Sato
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Voltage fluctuation compensating apparatus
    • Publication number 20020171294
    • Publication date Nov 21, 2002
    • Mitsubishi Denki Kabushiki Kaisha
    • Akihiko Iwata
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Voltage fluctuation compensating apparatus
    • Publication number 20020140294
    • Publication date Oct 3, 2002
    • Mitsubishi Denki Kabushiki Kaisha
    • Akihiko Iwata
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Switching apparatus
    • Publication number 20020043517
    • Publication date Apr 18, 2002
    • Kenichi Koyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Switching device
    • Publication number 20020044036
    • Publication date Apr 18, 2002
    • Hiroyuki Akita
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Switching apparatus
    • Publication number 20020044403
    • Publication date Apr 18, 2002
    • Toshie Takeuchi
    • H01 - BASIC ELECTRIC ELEMENTS