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Takefumi Okumura

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  • Tokyo, JP
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    INSULATION LAYER, BATTERY CELL SHEET, AND BATTERY
    • Publication number 20200411900
    • Publication date Dec 31, 2020
    • Hitachi, Ltd
    • Atsushi UNEMOTO
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    LITHIUM SECONDARY BATTERY, POWER STORAGE APPARATUS INCLUDING LITHIU...
    • Publication number 20160268608
    • Publication date Sep 15, 2016
    • Hitachi, Ltd
    • Etsuko NISHIMURA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Lithium Ion Battery
    • Publication number 20160006077
    • Publication date Jan 7, 2016
    • SHIN-KOBE ELECTRIC MACHINERY CO., LTD.
    • Takefumi OKUMURA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Lithium Ion Battery
    • Publication number 20150044534
    • Publication date Feb 12, 2015
    • Shin-Kobe Electric Machinery Co., Ltd.
    • Takayuki Kimura
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Lithium Ion Battery
    • Publication number 20150017499
    • Publication date Jan 15, 2015
    • Shin-Kobe Electric Machinery Co., Ltd.
    • Hiroo Nishiyama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Lithium Ion Battery
    • Publication number 20140370346
    • Publication date Dec 18, 2014
    • Shin-Kobe Electric Machinery Co., Ltd.
    • Takefumi Okumura
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Lithium Ion Battery
    • Publication number 20140363708
    • Publication date Dec 11, 2014
    • Shin-Kobe Electric Machinery Co., Ltd,
    • Shingo Ito
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Lithium Ion Battery
    • Publication number 20140322576
    • Publication date Oct 30, 2014
    • Shin-Kobe Electric Machinery Co., Ltd.
    • Takefumi Okumura
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    LITHIUM ION SECONDARY BATTERY
    • Publication number 20120321950
    • Publication date Dec 20, 2012
    • Hitachi, Ltd
    • Takefumi Okumura
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    LITHIUM-ION RECHARGEABLE BATTERY MODULE, VEHICLE WITH THE BATTERY M...
    • Publication number 20120263999
    • Publication date Oct 18, 2012
    • Hitachi, Ltd.
    • Akira GUNJI
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    LITHIUM-ION SECONDARY BATTERY
    • Publication number 20120100436
    • Publication date Apr 26, 2012
    • Ryo Inoue
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Rechargeable Battery System
    • Publication number 20120081077
    • Publication date Apr 5, 2012
    • Hitachi, Ltd
    • Hironori SASAKI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    LITHIUM SECONDARY BATTERY
    • Publication number 20110195319
    • Publication date Aug 11, 2011
    • Hitachi, Ltd.
    • Takefumi OKUMURA
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    SECONDARY BATTERY SYSTEM
    • Publication number 20110187312
    • Publication date Aug 4, 2011
    • Hitachi, Ltd.
    • Tsunenori YAMAMOTO
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    LITHIUM ION BATTERY
    • Publication number 20110183213
    • Publication date Jul 28, 2011
    • Hitachi, Ltd.
    • Ryo INOUE
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    ELECTRODE FOR LITHIUM SECONDARY BATTERY
    • Publication number 20110171525
    • Publication date Jul 14, 2011
    • Hitachi, Ltd.
    • Toshio ABE
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    LITHIUM-ION BATTERY AND METHOD FOR REGENERATING THE SAME
    • Publication number 20110171501
    • Publication date Jul 14, 2011
    • Hitachi, Ltd.
    • Takefumi Okumura
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    LITHIUM SECONDARY BATTERY
    • Publication number 20110143196
    • Publication date Jun 16, 2011
    • Hitachi Vehicle Energy, Ltd.
    • Takefumi OKUMURA
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    LITHIUM SECONDARY BATTERY
    • Publication number 20100297509
    • Publication date Nov 25, 2010
    • Takefumi Okumura
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Lithium Secondary Battery
    • Publication number 20100248037
    • Publication date Sep 30, 2010
    • HITACHI VEHICLE ENERGY, LTD.
    • Takefumi OKUMURA
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Polymerizable boric compounds, methods of producing the same, polym...
    • Publication number 20100179350
    • Publication date Jul 15, 2010
    • Norio Iwayasu
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Application

    Lithium Secondary Battery
    • Publication number 20090325041
    • Publication date Dec 31, 2009
    • Hitachi, Ltd
    • Takefumi OKUMURA
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    LITHIUM SECONDARY BATTERY
    • Publication number 20080241701
    • Publication date Oct 2, 2008
    • Takefumi Okumura
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    CATIONIC CONDUCTOR, ITS INTERMEDIATE, AND LITHIUM SECONDARY BATTERY...
    • Publication number 20080187839
    • Publication date Aug 7, 2008
    • Shin Nishimura
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Electrode for Polymer Electrolyte Secondary Battery and Polymer Ele...
    • Publication number 20070287070
    • Publication date Dec 13, 2007
    • Takefumi Okumura
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Electrochemical devices
    • Publication number 20070048618
    • Publication date Mar 1, 2007
    • Takefumi Okumura
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Gel electrolyte and secondary battery
    • Publication number 20070048616
    • Publication date Mar 1, 2007
    • Takefumi Okumura
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Polymerizable boric compounds, methods of producing the same, polym...
    • Publication number 20060147805
    • Publication date Jul 6, 2006
    • Norio Iwayasu
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Application

    Electrolyte and lithium secondary battery
    • Publication number 20050260501
    • Publication date Nov 24, 2005
    • Takefumi Okumura
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Boron-containing compound, ion-conductive polymer and polyelectroly...
    • Publication number 20040147697
    • Publication date Jul 29, 2004
    • Takefumi Okumura
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...