Patents by Inventor Kenichiro Sasamoto

Kenichiro Sasamoto 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 system
    Patent number: 8420268
    Abstract: A fuel cell system includes: an AC impedance measuring unit which measures an AC impedance of a fuel cell at a scavenging start and which measures an AC impedance of the fuel cell when a predetermined time has elapsed from the scavenging start; a scavenging execution time estimation unit which estimates a scavenging execution time based on the AC impedance measured at the scavenging start, the AC impedance measured at a time when the predetermined time has elapsed from the scavenging start, and the predetermined time; and an error processing unit which forcibly terminates scavenging processing if no AC impedance can be measured at the time when the predetermined time has elapsed from the scavenging start.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: April 16, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomonori Imamura, Kenichiro Sasamoto
  • Fuel cell system
    Patent number: 8236460
    Abstract: A fuel cell system includes: an AC impedance measuring unit which measures an AC impedance of a fuel cell at a scavenging start and measures an AC impedance of the fuel cell when a predetermined time has elapsed from the scavenging start; a scavenging execution time estimation unit which estimates a scavenging execution time based on the AC impedance measured at the scavenging start, the AC impedance measured at the time when the predetermined time has elapsed from the scavenging start and the predetermined time; and a limit unit which limits the scavenging execution time to a predetermined maximum scavenging time if the scavenging execution time exceeds the maximum scavenging time.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: August 7, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomonori Imamura, Kenichiro Sasamoto
  • FUEL CELL SYSTEM
    Publication number: 20100112398
    Abstract: A fuel cell system includes: an AC impedance measuring unit which measures an AC impedance of a fuel cell at a scavenging start and measures an AC impedance of the fuel cell when a predetermined time has elapsed from the scavenging start; a scavenging execution time estimation unit which estimates a scavenging execution time based on the AC impedance measured at the scavenging start, the AC impedance measured at the time when the predetermined time has elapsed from the scavenging start and the predetermined time; and a limit unit which limits the scavenging execution time to a predetermined maximum scavenging time if the scavenging execution time exceeds the maximum scavenging time.
    Type: Application
    Filed: May 8, 2008
    Publication date: May 6, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomonori Imamura, Kenichiro Sasamoto
  • FUEL CELL SYSTEM
    Publication number: 20100081022
    Abstract: A fuel cell system includes: an AC impedance measuring unit which measures an AC impedance of a fuel cell at a scavenging start and which measures an AC impedance of the fuel cell when a predetermined time has elapsed from the scavenging start; a scavenging execution time estimation unit which estimates a scavenging execution time based on the AC impedance measured at the scavenging start, the AC impedance measured at a time when the predetermined time has elapsed from the scavenging start, and the predetermined time; and an error processing unit which forcibly terminates scavenging processing if no AC impedance can be measured at the time when the predetermined time has elapsed from the scavenging start.
    Type: Application
    Filed: April 23, 2008
    Publication date: April 1, 2010
    Inventors: Tomonori Imamura, Kenichiro Sasamoto