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Takafumi Okamoto

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Patents Grantslast 30 patents

  • Information Patent Grant

    High efficiency fuel cell system
    • Patent number 7,976,990
    • Issue date Jul 12, 2011
    • Honda Motor Co., Ltd.
    • Arne W. Ballantine
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Method of operating phosphoric acid fuel cell
    • Patent number 6,833,204
    • Issue date Dec 21, 2004
    • Honda Giken Kogyo Kabushiki Kaisha
    • Hiroyuki Oyanagi
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Fuel cell system
    • Patent number 6,815,109
    • Issue date Nov 9, 2004
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Fuel cell system and method for operating the same
    • Patent number 6,767,661
    • Issue date Jul 27, 2004
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Fuel cell and fastening method therefor
    • Patent number 6,696,185
    • Issue date Feb 24, 2004
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Method of cooling a fuel cell
    • Patent number 6,582,844
    • Issue date Jun 24, 2003
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Fuel cell stack
    • Patent number 6,416,899
    • Issue date Jul 9, 2002
    • Honda Giken Kogyo Kabushiki Kaisha
    • Yoshinori Wariishi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Fuel cell stack
    • Patent number 6,294,280
    • Issue date Sep 25, 2001
    • Honda Giken Kabushiki Kaisha
    • Manabu Tanaka
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Fuel cell stack
    • Patent number 6,255,011
    • Issue date Jul 3, 2001
    • Honda Giken Kogyo Kabushiki Kaisha
    • Yosuke Fujii
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Fuel cell and method of controlling same
    • Patent number 6,214,486
    • Issue date Apr 10, 2001
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Fuel cell with cooling medium circulation arrangement and method
    • Patent number 6,180,273
    • Issue date Jan 30, 2001
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Fuel cell stack
    • Patent number 6,048,633
    • Issue date Apr 11, 2000
    • Honda Giken Kogyo Kabushiki Kaisha
    • Yosuke Fujii
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Method of supplying fuel gas to a fuel cell
    • Patent number 6,045,933
    • Issue date Apr 4, 2000
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Fuel cell and method of controlling same
    • Patent number 6,042,955
    • Issue date Mar 28, 2000
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Fuel cell
    • Patent number 6,040,073
    • Issue date Mar 21, 2000
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Gas humidifying device for use with a fuel cell
    • Patent number 5,965,288
    • Issue date Oct 12, 1999
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Fuel battery system
    • Patent number 5,837,393
    • Issue date Nov 17, 1998
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Fuel cell system for use on mobile bodies
    • Patent number 5,780,179
    • Issue date Jul 14, 1998
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Method for producing electrode unit for fuel cell
    • Patent number 5,752,988
    • Issue date May 19, 1998
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Fuel cell stack and method of pressing together the same
    • Patent number 5,736,269
    • Issue date Apr 7, 1998
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Direct methanol type fuel cell
    • Patent number 5,723,228
    • Issue date Mar 3, 1998
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Method for supplying fuel gas to fuel cell assembly
    • Patent number 5,714,276
    • Issue date Feb 3, 1998
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • C01 - INORGANIC CHEMISTRY
  • Information Patent Grant

    Fuel cell stack and method of pressing together the same
    • Patent number 5,534,362
    • Issue date Jul 9, 1996
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Fuel cell stack and method of pressing together the same
    • Patent number 5,419,980
    • Issue date May 30, 1995
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

  • Information Patent Application

    High efficiency fuel cell system
    • Publication number 20070128479
    • Publication date Jun 7, 2007
    • Arne W. Ballantine
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Fuel cell system and method for operating the same
    • Publication number 20020051900
    • Publication date May 2, 2002
    • HONDA GIKEN KOGYO KABUSHIKI KAISHA
    • Takafumi Okamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Method of operating phosphoric acid fuel cell
    • Publication number 20020012822
    • Publication date Jan 31, 2002
    • Honda Giken Kogyo Kabushiki Kaisha
    • Hiroyuki Oyanagi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Method of cooling a fuel cell
    • Publication number 20010051292
    • Publication date Dec 13, 2001
    • Takafumi Okamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Fuel cell system
    • Publication number 20010049042
    • Publication date Dec 6, 2001
    • Honda Giken Kogyo Kabushiki Kaisha
    • Takafumi Okamoto
    • B60 - VEHICLES IN GENERAL