Patents by Inventor Seikoh Suzuki

Seikoh Suzuki 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).

  • Oxygen sensor
    Patent number: 4900425
    Abstract: An oxygen sensor is disclosed in which an airtight reference chamber isolated from a surrounding space is formed on one main surface of a solid electrolyte, a current is supplied to the solid electrolyte to pump out oxygen from the reference chamber in such a manner that oxygen in the reference chamber is ionized and then passes through the solid electrolyte, means is provided for transferring oxygen from the surrounding space to the reference chamber in such a manner that oxygen in the surrounding space is ionized and then passes through the solid electrolyte, and the oxygen concentration in the surrounding space is detected on the basis of the current supplied to the solid electrolyte.
    Type: Grant
    Filed: April 5, 1984
    Date of Patent: February 13, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Takao Sasayama, Seikoh Suzuki, Toshitaka Suzuki, Masayuki Miki, Sadayasu Ueno