Patents by Inventor Akari TOMINAGA

Akari TOMINAGA 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).

  • Sensor element, manufacturing method therefor, and gas sensor
    Patent number: 10775341
    Abstract: In a sensor element 101, oxygen contained in a gas to be measured introduced into a first internal space 20 through a first diffusion control part 11 is pumped out by applying voltage between an inner pump electrode 22 and an outer pump electrode 23. After the oxygen is pumped out, NOx in the gas to be measured generates oxygen by being reduced by a measurement electrode 44. This oxygen is pumped by applying voltage between the measurement electrode 44 and the outer pump electrode 23. On the basis of current generated according to the amount of oxygen thus pumped, the NOx gas concentration is calculated. A slit width of the first diffusion control part 11 on an entrance side is larger than a slit width on an exit side.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: September 15, 2020
    Assignee: NGK INSULATORS, LTD.
    Inventors: Akari Tominaga, Hirohito Kiyota
  • SENSOR ELEMENT, MANUFACTURING METHOD THEREFOR, AND GAS SENSOR
    Publication number: 20170276636
    Abstract: In a sensor element 101, oxygen contained in a gas to be measured introduced into a first internal space 20 through a first diffusion control part 11 is pumped out by applying voltage between an inner pump electrode 22 and an outer pump electrode 23. After the oxygen is pumped out, NOx in the gas to be measured generates oxygen by being reduced by a measurement electrode 44. This oxygen is pumped by applying voltage between the measurement electrode 44 and the outer pump electrode 23. On the basis of current generated according to the amount of oxygen thus pumped, the NOx gas concentration is calculated. A slit width of the first diffusion control part 11 on an entrance side is larger than a slit width on an exit side.
    Type: Application
    Filed: March 10, 2017
    Publication date: September 28, 2017
    Inventors: Akari TOMINAGA, Hirohito KIYOTA