Patents by Inventor Chizumi KITAGAWA

Chizumi KITAGAWA 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).

  • Gas detection apparatus and gas detection method
    Patent number: 9182366
    Abstract: A gas is detected using a MEMS gas sensor. The electrical power to a heater in the gas sensor is changed between a low level, a high level suitable for detection of detection target gas, and a 0 level, and, therefore, poisonous gas is evaporated or oxidized at the low level, and the detection target gas is detected at the high level.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: November 10, 2015
    Assignee: Figaro Engineering Inc.
    Inventors: Kuniyuki Izawa, Kenichi Yoshioka, Chizumi Kitagawa
  • GAS DETECTION APPARATUS AND GAS DETECTION METHOD
    Publication number: 20120297860
    Abstract: A gas is detected using a MEMS gas sensor. The electrical power to a heater in the gas sensor is changed between a low level, a high level suitable for detection of detection target gas, and a 0 level, and, therefore, poisonous gas is evaporated or oxidized at the low level, and the detection target gas is detected at the high level.
    Type: Application
    Filed: May 23, 2012
    Publication date: November 29, 2012
    Applicant: FIGARO ENGINEERING INC.
    Inventors: Kuniyuki IZAWA, Kenichi YOSHIOKA, Chizumi KITAGAWA