Patents by Inventor Kiyotaka Sumito

Kiyotaka Sumito 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).

  • Heater control device, method and program
    Patent number: 9198231
    Abstract: A heater control device having at least two PTC heaters having PTC elements includes switching units which are provided so as to correspond to the PTC heaters and which switch an energized state and a non-energized state of the PTC elements by being turned ON and OFF, pattern information which defines state combination patterns of the energized state and the non-energized state of the PTC elements with respect to a required power value for the heater unit, and a ratio controlling unit which when the required power for the heater unit is at an intermediate value of the required power values defined in the pattern information, controls a ratio of the energized state to the non-energized state of the PTC elements based on a ratio of ON time to OFF time for which an average power within a certain period matches the required power.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: November 24, 2015
    Assignee: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.
    Inventors: Keiji Nagasaka, Hidetaka Sato, Koji Nakano, Shiro Matsubara, Satoshi Kominami, Kiyotaka Sumito, Kenji Shimizu
  • HEATER CONTROL DEVICE, METHOD AND PROGRAM
    Publication number: 20130341318
    Abstract: A heater control device having at least two PTC heaters having PTC elements includes switching units which are provided so as to correspond to the PTC heaters and which switch an energized state and a non-energized state of the PTC elements by being turned ON and OFF, pattern information which defines state combination patterns of the energized state and the non-energized state of the PTC elements with respect to a required power value for the heater unit, and a ratio controlling unit which when the required power for the heater unit is at an intermediate value of the required power values defined in the pattern information, controls a ratio of the energized state to the non-energized state of the PTC elements based on a ratio of ON time to OFF time for which an average power within a certain period matches the required power.
    Type: Application
    Filed: August 6, 2012
    Publication date: December 26, 2013
    Applicant: Mitsubishi Heavy Industries Automtive Thermal Systems Co., Ltd.
    Inventors: Keiji Nagasaka, Hidetaka Sato, Koji Nakano, Shiro Matsubara, Satoshi Kominami, Kiyotaka Sumito, Kenji Shimizu