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Kenichi Niiyama

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  • Kyoto-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Power system
    • Patent number 9,553,480
    • Issue date Jan 24, 2017
    • Rohm Co., Ltd.
    • Akinobu Sawada
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Switching rectifier circuit and battery charger using same
    • Patent number 9,209,706
    • Issue date Dec 8, 2015
    • Rohm Co., Ltd.
    • Tsutomu Takahagi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Load driving circuit and protection method
    • Patent number 8,373,957
    • Issue date Feb 12, 2013
    • Rohm Co., Ltd.
    • Kenichi Niiyama
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Disk device
    • Patent number 7,660,210
    • Issue date Feb 9, 2010
    • Rohm Co., Ltd.
    • Seiichi Yamamoto
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Electronic apparatus
    • Patent number 7,312,967
    • Issue date Dec 25, 2007
    • Rohm Co., Ltd.
    • Kenichi Niiyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Disk device
    • Patent number 7,289,396
    • Issue date Oct 30, 2007
    • Rohm Co., Ltd.
    • Seiichi Yamamoto
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Step-up/step-down DC-DC converter and portable device employing it
    • Patent number 6,958,595
    • Issue date Oct 25, 2005
    • Rohm Co., Ltd.
    • Kenichi Niiyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

  • Information Patent Application

    SWITCHING RECTIFIER CIRCUIT AND BATTERY CHARGER USING SAME
    • Publication number 20130235635
    • Publication date Sep 12, 2013
    • Rohm Co., Ltd.
    • Tsutomu Takahagi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    POWER SYSTEM
    • Publication number 20120286574
    • Publication date Nov 15, 2012
    • Rohm Co., Ltd.
    • Akinobu Sawada
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Disk device
    • Publication number 20080019225
    • Publication date Jan 24, 2008
    • ROHM CO., LTD.
    • Seiichi Yamamoto
    • G11 - INFORMATION STORAGE
  • Information Patent Application

    Power Source Device
    • Publication number 20070200540
    • Publication date Aug 30, 2007
    • Rohm Co., Ltd.
    • Ken Hashimoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Step-up/step-down DC-DC converter and portable device employing it
    • Publication number 20050007089
    • Publication date Jan 13, 2005
    • ROHM CO., LTD.
    • Kenichi Niiyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Disk device
    • Publication number 20040165488
    • Publication date Aug 26, 2004
    • ROHM CO., LTD.
    • Seiichi Yamamoto
    • G11 - INFORMATION STORAGE
  • Information Patent Application

    Electronic apparatus
    • Publication number 20040150930
    • Publication date Aug 5, 2004
    • ROHM CO., LTD.
    • Kenichi Niiyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER