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Kunihiko Isshiki

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical amplifier and optical communication system
    • Patent number 7,365,902
    • Issue date Apr 29, 2008
    • Mitsubishi Denki K.K.
    • Kunihiko Isshiki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Optical amplifier
    • Patent number 5,867,306
    • Issue date Feb 2, 1999
    • Mitsubishi Denki Kabushiki Kaisha
    • Kunihiko Isshiki
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Optical modulator
    • Patent number 5,550,855
    • Issue date Aug 27, 1996
    • Mitsubishi Denki Kabushiki Kaisha
    • Toshitaka Aoyagi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Semiconductor laser
    • Patent number 5,161,166
    • Issue date Nov 3, 1992
    • Mitsubishi Denki Kabushiki Kaisha
    • Akihiro Shima
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Method for producing semiconductor light emitting device
    • Patent number 5,149,670
    • Issue date Sep 22, 1992
    • Mitsubishi Denki Kabushiki Kaisha
    • Kunihiko Isshiki
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Semiconductor laser manufacturing method
    • Patent number 5,089,437
    • Issue date Feb 18, 1992
    • Mitsubishi Denki Kabushiki Kaisha
    • Akihiro Shima
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Semiconductor laser device
    • Patent number 5,020,068
    • Issue date May 28, 1991
    • Mitsubishi Denki Kabushiki Kaisha
    • Kunihiko Isshiki
    • B82 - NANO-TECHNOLOGY
  • Information Patent Grant

    Semiconductor laser device
    • Patent number 4,815,082
    • Issue date Mar 21, 1989
    • Mitsubishi Denki Kabushiki Kaisha
    • Kunihiko Isshiki
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Internal current confinement type semiconductor light emission device
    • Patent number 4,768,200
    • Issue date Aug 30, 1988
    • Mitsubishi Denki Kabushiki Kaisha
    • Kunihiko Isshiki
    • G02 - OPTICS
  • Information Patent Grant

    Semiconductor laser apparatus
    • Patent number 4,757,509
    • Issue date Jul 12, 1988
    • Mitsubishi Denki Kabushiki Kaisha
    • Kunihiko Isshiki
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents