Patents by Inventor Yoshinobu Matsuura

Yoshinobu Matsuura 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
    Patent number: 5759367
    Abstract: An insulating glass film is formed on a heater film, and a gas sensitive film is formed on the glass film. The MgO content in the glass is kept at 0.1 wt % or under to prevent Mg from eluting into absorbed water at low temperatures and segregating on the cathode by the detection voltage.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: June 2, 1998
    Assignee: Figaro Engineering Inc.
    Inventors: Yoshinobu Matsuura, Toru Nomura, Daisuke Matsuda, Yuki Fujimori, Maki Kitora
  • Gas sensor
    Patent number: 5493897
    Abstract: An alumina substrate has a front surface with a semiconductor gas sensor main body attached thereon for specific detection of a surface exposed gas, and has a rear surface formed with a glass layer and a gold paste layer as superposed on the surface, and bonded to a gold plating layer on a frame by parallel gap welding. The gold paste layer is welded to the gold plating layer with the heat of welding. The glass layer prevents transmission of thermal impact of die bonding to the substrate.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: February 27, 1996
    Assignee: Figaro Engineering Inc.
    Inventors: Tooru Nomura, Yoshinobu Matsuura, Tomohiro Inoue
  • Gas sensor
    Patent number: 4731226
    Abstract: A gas sensor in which a compound of rhenium is added to tin oxide (SnO.sub.2). Rhenium inhibits the sensor from lowering its resistance over time and in particular increases its durability against overheating. Rhenium is preferably used together with vanadium. Rhenium is preferably added by impregnation in order to maintain temperature characteristic of the sensor.
    Type: Grant
    Filed: June 18, 1986
    Date of Patent: March 15, 1988
    Assignee: Figaro Engineering Inc.
    Inventors: Kei Takahata, Yoshinobu Matsuura