Patents by Inventor Takatsugu Koyama

Takatsugu Koyama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20060113131
    Abstract: The fuel cell vehicle, includes a fuel cell generating electricity by an electrochemical reaction of hydrogen and oxygen; an accessory for the fuel cell; and a fuel cell system box mounted on a vehicle body and housing the fuel cell and the accessory, wherein the fuel cell system box is formed in a vessel shape which has a bottom wall, a first side wall, and a second side wall, the first side wall supporting at least one pipe through which a fluid supplied to the fuel cell flows, and the first side wall is constituted of a material having a specific gravity that is greater than that of the bottom wall and the second wall.
    Type: Application
    Filed: November 23, 2005
    Publication date: June 1, 2006
    Applicant: Honda Motor Co., Ltd.
    Inventors: Takashi Kato, Makoto Anazawa, Takatsugu Koyama, Mitsunori Matsumoto, Masato Nakaarai
  • Patent number: 6916563
    Abstract: A discharged fuel diluter includes: a retention region with a predetermined volume, into which a fuel discharged from a fuel cell is retained at the time of purging; a dilution region with a predetermined volume, through which air discharged from the fuel cell flows and at which the air is mixed with the fuel from the retention region to dilute the fuel; and a communicating portion, through which the fuel flows from the retention region to the dilution region.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: July 12, 2005
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Akio Yamamoto, Satoshi Aoyagi, Masami Ogura, Yoshikazu Murakami, Kazunori Fukuma, Takatsugu Koyama
  • Publication number: 20040265654
    Abstract: An apparatus for cooling a fuel cell, which generates power by supplying air and a fuel gas, in which a cooling liquid is circulated between the fuel cell and a heat exchanger is disclosed. The cooling apparatus of the present invention separates the gas introduced into the cooling liquid, mixes the separated gas with the air supplied to or exhausted from the fuel cell, and then exhausts the gas.
    Type: Application
    Filed: April 15, 2004
    Publication date: December 30, 2004
    Applicant: Honda Motor Co., Ltd.
    Inventors: Mitsuharu Imaseki, Yoshiro Shimoyama, Takatsugu Koyama, Teruaki Kawasaki, Akio Yamamoto
  • Publication number: 20040072052
    Abstract: Hydrogen gas supplied to and then purged from a fuel cell is temporarily retained in a reservoir provided in an exhaust fuel diluter, and diluted before release into atmosphere. Cathode exhaust gas discharged from a cathode of the fuel cell is mixed to dilute the hydrogen gas, and air continues to be supplied to the cathode of the fuel cell for a specific period of time even after generation of electric power in the fuel cell is stopped, so that the hydrogen gas retained in the reservoir is continuously diluted with the cathode exhaust gas and released. Air for ventilation of the fuel cell may be used instead or in addition, to dilute and release the hydrogen gas retained in the reservoir after the generation of electric power in the fuel cell is stopped.
    Type: Application
    Filed: October 3, 2003
    Publication date: April 15, 2004
    Applicant: Honda Motor Co., Ltd.
    Inventors: Akio Yamamoto, Kazunori Fukuma, Takatsugu Koyama, Hideo Numata, Masahiro Matsutani
  • Publication number: 20040062975
    Abstract: An apparatus for dilution of discharged fuel of a fuel cell is provided, which has an inlet for guiding purged hydrogen gas coming from the fuel cell, a reservoir for storing the purged hydrogen gas guided through the inlet, and a cathode exhaust gas pipe penetrating the reservoir. The cathode exhaust gas pipe has a feature that it has holes inside the reservoir and is supplied with cathode exhaust gas of the fuel cell. Also the apparatus has a feature that the cathode exhaust gas pipe sucks the purged hydrogen gas stored in the reservoir through the holes and discharges the purged hydrogen gas diluted by mixing with the cathode exhaust gas.
    Type: Application
    Filed: October 1, 2003
    Publication date: April 1, 2004
    Applicant: Honda Motor Co., Ltd.
    Inventors: Akio Yamamoto, Kazunori Fukuma, Takatsugu Koyama, Hideo Numata, Masahiro Matsutani
  • Publication number: 20030077488
    Abstract: A discharged fuel diluter includes: a retention region with a predetermined volume, into which a fuel discharged from a fuel cell is retained at the time of purging; a dilution region with a predetermined volume, through which air discharged from the fuel cell flows and at which the air is mixed with the fuel from the retention region to dilute the fuel; and a communicating portion, through which the fuel flows from the retention region to the dilution region.
    Type: Application
    Filed: October 23, 2002
    Publication date: April 24, 2003
    Applicant: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Akio Yamamoto, Satoshi Aoyagi, Masami Ogura, Yoshikazu Murakami, Kazunori Fukuma, Takatsugu Koyama