Patents by Inventor Yukiko OTA

Yukiko OTA 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 for producing alkaline earth ferrite
    Patent number: 12241852
    Abstract: The gas sensor is provided with: a base material; a first electrode and a second electrode arranged on the base material; and a gas detection member connected to the first electrode and the second electrode, wherein the gas detection member contains flaky particles of alkaline earth ferrite.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: March 4, 2025
    Assignees: National Institute of Technology, KOA Corporation
    Inventors: Shigenori Matsushima, Kenji Obata, Kenichi Iguchi, Yukiko Ota, Hisakazu Nagata, Koichi Urano
  • OXYGEN SENSOR ELEMENT AND METHOD FOR MANUFACTURING SAME
    Publication number: 20240272107
    Abstract: An oxygen sensor element that can achieve electric power saving without losing sensor characteristics has a structure in which an outer surface of a ceramic sintered body as a sensing layer made of a composition LnBa2Cu3O7?? (Ln denotes rare earth element) is covered with heat insulating layers. A heat insulating material having a composition Ln2BaCuO5 is used for the heat insulating layers, and that composition Ln2BaCuO5 is added with 20 mol % of LnBa2Cu3O7??. This allows a sintering behavior of the heat insulating layers to come close to a sintering behavior of the sensing layer, and can thus prevent the occurrence of separation of the layers and cracks. The oxygen sensor element has a sandwich structure where the sensing layer is sandwiched between the heat insulating layers, thereby reducing the amount of heat dissipated from the sensing layer, and making it possible to achieve electric power saving.
    Type: Application
    Filed: June 9, 2022
    Publication date: August 15, 2024
    Inventors: Tomoichiro OKAMOTO, Kenichi IGUCHI, Yukiko OTA, Ryosuke KOMATSU, Tetsuro TANAKA, Katsuhide NISHIZAWA
  • RESISTIVE OXYGEN GAS SENSOR AND OXYGEN SENSOR DEVICE
    Publication number: 20240210342
    Abstract: In a resistive oxygen gas sensor, an oxygen gas detection member for detecting oxygen gas contains, as a main component, a semiconductor material having a composition formula represented by RE(Ba2-x, REx)Cu3O, (wherein, RE is a rare earth element, x is 0?x? 1.2, and y is 6.0?y?7.5).
    Type: Application
    Filed: June 16, 2022
    Publication date: June 27, 2024
    Inventors: Tomoichiro Okamoto, Kenichi Iguchi, Yukiko Ota, Ryosuke Komatsu, Zoku Ko, Tetsuro Tanaka
  • GAS SENSOR AND METHOD FOR PRODUCING ALKALINE EARTH FERRITE
    Publication number: 20220291160
    Abstract: The gas sensor is provided with: a base material; a first electrode and a second electrode arranged on the base material; and a gas detection member connected to the first electrode and the second electrode, wherein the gas detection member contains flaky particles of alkaline earth ferrite.
    Type: Application
    Filed: August 26, 2020
    Publication date: September 15, 2022
    Inventors: Shigenori MATSUSHIMA, Kenji OBATA, Kenichi GUCHI, Yukiko OTA, Hisakazu NAGATA, Koichi URANO