Patents by Inventor Reina Kito

Reina Kito 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).

  • Abnormality diagnosis method and apparatus for gas concentration measuring device
    Patent number: 7142976
    Abstract: An abnormality diagnosis method for a gas concentration measuring device, includes electrically shutting off measurement means from an oxygen concentration detecting cell and an oxygen pump cell of a gas sensor when a voltage at one of electrical connection points through which the measurement means is electrically connected to the oxygen concentration detecting cell and the oxygen pump cell becomes equal to a predetermined abnormal voltage value, and thereafter, electrically connecting the measurement means to the oxygen concentration detecting cell and the oxygen pump cell of the gas sensor to perform an abnormality diagnosis of the gas sensor. An abnormality diagnosis apparatus for a gas concentration measuring device is also provided.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: November 28, 2006
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Yoshinori Inoue, Norikazu Ieda, Masahiro Tanaka, Reina Kito, Keigo Banno, Tatsuki Hirabayashi
  • Abnormality diagnosis method and apparatus for gas concentration measuring device
    Publication number: 20050288847
    Abstract: An abnormality diagnosis method for a gas concentration measuring device, includes electrically shutting off measurement means from an oxygen concentration detecting cell and an oxygen pump cell of a gas sensor when a voltage at one of electrical connection points through which the measurement means is electrically connected to the oxygen concentration detecting cell and the oxygen pump cell becomes equal to a predetermined abnormal voltage value, and thereafter, electrically connecting the measurement means to the oxygen concentration detecting cell and the oxygen pump cell of the gas sensor to perform an abnormality diagnosis of the gas sensor. An abnormality diagnosis apparatus for a gas concentration measuring device is also provided.
    Type: Application
    Filed: June 28, 2005
    Publication date: December 29, 2005
    Inventors: Yoshinori Inoue, Norikazu Ieda, Masahiro Tanaka, Reina Kito, Keigo Banno, Tatsuki Hirabayashi