Patents by Inventor Mitsuhiro Kokubo

Mitsuhiro Kokubo 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).

  • Fuel cell start-up control system
    Patent number: 8211579
    Abstract: A fuel cell has an anode, a cathode, and a proton-exchange membrane disposed between the anode and cathode. An exhaust anode gas exhausted from an outlet of the anode is directed back to an inlet of the anode. Hydrogen is added to the exhaust anode gas before the exhaust anode gas reaches the inlet.
    Type: Grant
    Filed: June 13, 2006
    Date of Patent: July 3, 2012
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hitoshi Igarashi, Masatoshi Iio, Seiho Sugawara, Atsushi Ooma, Takashi Iimori, Mitsuhiro Kokubo, Takashi Fukuda
  • Fuel cell system
    Patent number: 7875398
    Abstract: A fuel cell system which includes: a fuel cell fed with a reaction gas for generating power; an output detection unit which detects output current and voltage of the fuel cell; a storage unit which stores a standard current-voltage characteristic of the fuel cell, from which a standard voltage of the fuel cell at an output current thereof is obtainable; and a gas feed mismatch detection unit which detects a gas feed mismatch of the reaction gas, based on a comparison between the detected output voltage of the fuel cell and the standard voltage at the detected output current, obtained from the standard current-voltage characteristic stored.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: January 25, 2011
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Mitsuhiro Kokubo
  • Fuel Cell System
    Publication number: 20080152972
    Abstract: A fuel cell has an anode, a cathode, and a proton-exchange membrane disposed between the anode and cathode. An exhaust anode gas exhausted from an outlet of the anode is directed back to an inlet of the anode. Hydrogen is added to the exhaust anode gas before the exhaust anode gas reaches the inlet.
    Type: Application
    Filed: June 13, 2006
    Publication date: June 26, 2008
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Hitoshi Igarashi, Masatoshi Iio, Seiho Sugawara, Atsushi Ooma, Takashi Iimori, Mitsuhiro Kokubo, Takashi Fukuda
  • Fuel cell system
    Publication number: 20060014063
    Abstract: A fuel cell system which includes: a fuel cell fed with a reaction gas for generating power; an output detection unit which detects output current and voltage of the fuel cell; a storage unit which stores a standard current-voltage characteristic of the fuel cell, from which a standard voltage of the fuel cell at an output current thereof is obtainable; and a gas feed mismatch detection unit which detects a gas feed mismatch of the reaction gas, based on a comparison between the detected output voltage of the fuel cell and the standard voltage at the detected output current, obtained from the standard current-voltage characteristic stored.
    Type: Application
    Filed: June 30, 2005
    Publication date: January 19, 2006
    Inventor: Mitsuhiro Kokubo