Patents by Inventor Shota HAGINO

Shota HAGINO 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).

  • Publication number: 20200209184
    Abstract: A gas sensor element includes a solid electrolyte body having oxygen ion conductivity, a measurement electrode provided on one surface of the solid electrolyte body and exposed to a measurement gas, and a reference electrode provided on the other surface of the solid electrolyte body and exposed to a reference gas. Both the measurement electrode and the reference electrode include noble metal particles, solid electrolyte particles having oxygen ion conductivity, and pores. The measurement electrode comprises a surface measurement electrode layer comprising a surface serving as a contact surface with the measurement gas and an intermediate measurement electrode layer disposed in contact with a surface at solid electrolyte body side of the surface measurement electrode layer. The surface measurement electrode layer has a higher porosity than the intermediate measurement electrode layer has. The gas sensor comprises the gas sensor element.
    Type: Application
    Filed: March 10, 2020
    Publication date: July 2, 2020
    Inventors: Masatoshi IKEDA, Shota HAGINO, Chika NAMEKATA
  • Publication number: 20200141896
    Abstract: A gas sensor element includes a solid electrolyte having oxygen-ion conductivity, a first electrode film located on one side of the solid electrolyte, a second electrode film located on the other side of the solid electrolyte. At least one of the first electrode film and the second electrode film includes noble metal particles, solid electrolyte particles having oxygen-ion conductivity, and pores, and a capacitance in the electrode film is 80 ?F or less. A gas sensor includes the gas sensor element.
    Type: Application
    Filed: January 7, 2020
    Publication date: May 7, 2020
    Inventors: Chika NAMEKATA, Yasufumi SUZUKI, Makoto ITO, Masatoshi IKEDA, Shota HAGINO
  • Publication number: 20200064303
    Abstract: In a gas sensor element, an electrolyte layer has a solid electrolyte body having oxygen ionic conductivity. A first insulation body is stacked at a first surface side of the electrolyte layer. A second insulation body is stacked at a second surface side of the electrolyte layer. A measurement gas chamber is surrounded by the electrolyte layer and the first insulation body, into which a detection target gas is introduced. A reference gas chamber is surrounded by the electrolyte layer and the second insulation body, into which a reference gas is introduced. A heater is embedded in the first insulation body. The second insulation body has a low thermal conductivity part having a thermal conductivity which is lower than a thermal conductivity of a heater embedded part formed in the first insulation body in which the heater is embedded.
    Type: Application
    Filed: August 22, 2019
    Publication date: February 27, 2020
    Inventors: Masatoshi IKEDA, Shota HAGINO, Makoto ITO, Daisuke KAWAI
  • Publication number: 20190391109
    Abstract: A gas sensor is equipped with a sensor device made of a stack of a solid electrolyte body, a sensor electrode, a reference electrode, a first insulator, a second insulator, a gas chamber, a reference gas duct, a heater, and a heat transfer member. The heater has a heating element at least partially overlapping the sensor electrode and the reference electrode. The heat transfer member is made of a dense metallic oxide material which blocks passage of measurement gas therethrough. The heat transfer member is held between the sensor electrode and the first insulator in which the heater is embedded within the gas chamber and works to facilitate transfer of thermal energy, as generated by the heater, to the solid electrolyte body, the sensor electrode, and the reference electrode. This results in enhanced thermal conductivity of the sensor device and achieves quick activation of the sensor device.
    Type: Application
    Filed: June 25, 2019
    Publication date: December 26, 2019
    Inventors: Shota HAGINO, Masatoshi IKEDA, Makoto ITO, Zhenzhou SU, Hao WU, Takashi HIRAYAMA, Daisuke KAWAI, Satoshi NAKAMURA
  • Publication number: 20190391108
    Abstract: A nitrous oxide concentration detector includes a control unit. In the control unit, a first control section controls a voltage application section and a heater to achieve a first state in which nitric oxide undergoes electrolysis and nitrous oxide does not undergo electrolysis. A second control section controls the voltage application section and the heater to achieve a second state in which nitric oxide and nitrous oxide undergo electrolysis. An estimation section estimates an estimated current that flows between a first electrode and a second electrode due to electrolysis of nitric oxide in the second state based on a first current detected by a current detector in the first state. A calculation section calculates a nitrous oxide concentration based on a third current obtained by subtracting the estimated current estimated by the estimation section from a second current detected by the current detector in the second state.
    Type: Application
    Filed: June 21, 2019
    Publication date: December 26, 2019
    Inventors: Hao WU, Shota HAGINO, Hiroki ICHIKAWA
  • Publication number: 20190227027
    Abstract: The present invention provides a gas sensor capable of suppressing a variation of a sensor output by a sensor cell to be small. A sensor element of a gas sensor comprises a first solid electrolyte body and a second solid electrolyte body having oxygen ion conductivity, a measured gas chamber into which the measured gas is introduced, a first reference gas chamber and a second reference gas chamber into which reference gas is introduced, a first pump cell, a second pump cell, a sensor cell, and a heater. A value obtained by dividing a first average cross-sectional area of the first reference gas chamber by the first length is larger than the value obtained by dividing the second average cross-sectional area of the second reference gas chamber by the second length.
    Type: Application
    Filed: May 15, 2017
    Publication date: July 25, 2019
    Inventors: Keisuke MIZUTANI, Keigo MIZUTANI, Shota HAGINO, Mitsunobu NAKATO, Takashi ARAKI