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Masatoshi Kumagai

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  • Fujisawa-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Power supply device and luminaire
    • Patent number 9,167,653
    • Issue date Oct 20, 2015
    • Toshiba Lighting & Technology Corporation
    • Koji Takahashi
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Switching power supply apparatus and luminaire
    • Patent number 9,006,974
    • Issue date Apr 14, 2015
    • Toshiba Lighting & Technology Corporation
    • Noriyuki Kitamura
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Lighting circuit and illumination device
    • Patent number 8,970,127
    • Issue date Mar 3, 2015
    • Toshiba Lighting & Technology Corporation
    • Mitsuhiro Matsuda
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Illuminating device and illuminating method
    • Patent number 8,952,627
    • Issue date Feb 10, 2015
    • Toshiba Lighting & Technology Corporation
    • Sayaka Tomiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Luminaire and light-emitting apparatus with light-emitting device
    • Patent number 8,872,198
    • Issue date Oct 28, 2014
    • Toshiba Lighting & Technology Corporation
    • Soichi Shibusawa
    • F21 - LIGHTING
  • Information Patent Grant

    DC power source unit and LED lamp system
    • Patent number 8,823,278
    • Issue date Sep 2, 2014
    • Toshiba Lighting & Technology Corporation
    • Naoko Iwai
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Light-emitting device and lighting apparatus
    • Patent number 8,770,795
    • Issue date Jul 8, 2014
    • Toshiba Lighting & Technology Corporation
    • Kozo Uemura
    • F21 - LIGHTING
  • Information Patent Grant

    Led lighting device and illumination apparatus
    • Patent number 8,593,067
    • Issue date Nov 26, 2013
    • Toshiba Lighting & Technology Corporation
    • Naoko Iwai
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Lighting apparatus
    • Patent number 8,079,736
    • Issue date Dec 20, 2011
    • Toshiba Lighting & Technology Corporation
    • Masaru Inoue
    • F21 - LIGHTING
  • Information Patent Grant

    Lighting apparatus
    • Patent number 8,047,687
    • Issue date Nov 1, 2011
    • Toshiba Lighting & Technology Corporation
    • Masaru Inoue
    • F21 - LIGHTING
  • Information Patent Grant

    Lighting apparatus
    • Patent number 8,042,973
    • Issue date Oct 25, 2011
    • Toshiba Lighting & Technology Corporation
    • Masaru Inoue
    • F21 - LIGHTING
  • Information Patent Grant

    Lighting apparatus
    • Patent number 7,722,213
    • Issue date May 25, 2010
    • Toshiba Lighting & Technology Corporation
    • Masaru Inoue
    • F21 - LIGHTING
  • Information Patent Grant

    Cell switching device for controlling a fixed rate connection
    • Patent number 6,359,889
    • Issue date Mar 19, 2002
    • Fujitsu Limited
    • Yuji Tazaki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    POWER SUPPLY DEVICE AND LUMINAIRE
    • Publication number 20140084813
    • Publication date Mar 27, 2014
    • Koji TAKAHASHI
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LIGHT SOURCE LIGHTING DEVICE AND LUMINAIRE
    • Publication number 20130293144
    • Publication date Nov 7, 2013
    • Toshiba Lighting & Technology Corporation
    • Sayaka Tomiyama
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LIGHT-EMITTING CIRCUIT AND LUMINAIRE
    • Publication number 20130271971
    • Publication date Oct 17, 2013
    • TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    • Kozo Uemura
    • F21 - LIGHTING
  • Information Patent Application

    LIGHTING CIRCUIT AND ILLUMINATION DEVICE
    • Publication number 20130162155
    • Publication date Jun 27, 2013
    • Kabushiki Kaisha Toshiba
    • MITSUHIRO MATSUDA
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Switching Power Supply Apparatus And Luminaire
    • Publication number 20130119860
    • Publication date May 16, 2013
    • Toshiba Lighting & Technology Corporation
    • Noriyuki Kitamura
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    ILLUMINATING DEVICE AND ILLUMINATING METHOD
    • Publication number 20120153841
    • Publication date Jun 21, 2012
    • TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    • Sayaka TOMIYAMA
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LIGHT-EMITTING DEVICE AND LIGHTING APPARATUS
    • Publication number 20120075836
    • Publication date Mar 29, 2012
    • Toshiba Lighting & Technology Corporation
    • Kozo UEMURA
    • F21 - LIGHTING
  • Information Patent Application

    DC POWER SOURCE UNIT AND LED LAMP SYSTEM
    • Publication number 20120056560
    • Publication date Mar 8, 2012
    • Toshiba Lighting & Technology Corporation
    • Naoko IWAI
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LIGHT-EMITTING DEVICE AND LIGHTING APPARATUS
    • Publication number 20110309381
    • Publication date Dec 22, 2011
    • Toshiba Lighting & Technology Corporation
    • Nobuhiko Betsuda
    • F21 - LIGHTING
  • Information Patent Application

    LIGHT-EMITTING DEVICE AND LUMINARE
    • Publication number 20110309379
    • Publication date Dec 22, 2011
    • TOSHIBA LIGHTING & TECHNOLOGY DIVISION
    • Soichi SHIBUSAWA
    • F21 - LIGHTING
  • Information Patent Application

    LUMINAIRE AND LIGHT-EMITTING APPARATUS WITH LIGHT-EMITTING DEVICE
    • Publication number 20110254023
    • Publication date Oct 20, 2011
    • Toshiba Lighting & Technology Corporation
    • Soichi SHIBUSAWA
    • F21 - LIGHTING
  • Information Patent Application

    LED LIGHTING DEVICE AND ILLUMINATION APPARATUS
    • Publication number 20110181198
    • Publication date Jul 28, 2011
    • Toshiba Lighting & Technology Corporation
    • Naoko IWAI
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LIGHTING CIRCUIT AND ILLUMINATION DEVICE
    • Publication number 20110043121
    • Publication date Feb 24, 2011
    • Toshiba Lighting & Technology Corporation
    • MITSUHIRO MATSUDA
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LIGHTING APPARATUS
    • Publication number 20100195329
    • Publication date Aug 5, 2010
    • TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    • MASARU INOUE
    • F21 - LIGHTING
  • Information Patent Application

    LIGHTING APPARATUS
    • Publication number 20100195327
    • Publication date Aug 5, 2010
    • TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    • MASARU INOUE
    • F21 - LIGHTING
  • Information Patent Application

    LIGHTING APPARATUS
    • Publication number 20100195328
    • Publication date Aug 5, 2010
    • TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    • MASARU INOUE
    • F21 - LIGHTING
  • Information Patent Application

    LIGHTING DEVICE AND ILLUMINATION APPARATUS
    • Publication number 20090108769
    • Publication date Apr 30, 2009
    • Toshiba Lighting & Techonology Corporation
    • Toru Ishikita
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    LIGHTING APPARATUS
    • Publication number 20090067172
    • Publication date Mar 12, 2009
    • MASARU INOUE
    • F21 - LIGHTING