Patents by Inventor Kimie Kato

Kimie Kato 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 sensor and method of heating the same
    Patent number: 6921883
    Abstract: Temperature of a heater is controlled by switching an increasing rate of a resistance value of heating unit of the heater. During a period T1 from a time point when heating of the heater is started until the resistance value of the heating unit reaches a reference value, the increasing rate is changed in multiple heating stages. In this manner, the temperature and the resistance value of the heating unit are increased. During a period T2 from a time point when the resistance value of the heating unit reaches the reference value, feedback control is performed such that the resistance value is kept at the reference value as a target value.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: July 26, 2005
    Assignee: NGK Insulators, Ltd.
    Inventors: Kimie Kato, Takeya Miyashita, Nobuhide Kato
  • Gas sensor and method of heating the same
    Publication number: 20020139671
    Abstract: Temperature of a heater is controlled by switching an increasing rate of a resistance value of a heating unit of the heater. During a period T1 from a time point when heating of the heater is started until the resistance value of the heating unit reaches a reference value, the increasing rate is changed in multiple heating stages. In this manner, temperature and the resistance value of the heating unit are increased. During a period T2 from a time point when the resistance value of the heating unit reaches the reference value, feedback control is performed such that the resistance value is kept at the reference value as a target value.
    Type: Application
    Filed: March 6, 2002
    Publication date: October 3, 2002
    Applicant: NGK Insulators, Ltd.
    Inventors: Nobuhide Kato, Kimie Kato, Takeya Miyashita