Patents by Inventor Yasuhisa Naito

Yasuhisa Naito 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 fuel cell vehicle
    Patent number: 11933752
    Abstract: A gas sensor includes: a gas-sensitive body layer disposed above a substrate and including a metal oxide layer; a first electrode on the gas-sensitive body layer; and a second electrode on the gas-sensitive body layer, being apart from the first electrode by a gap. The gas-sensitive body layer has a resistance change characteristic that reversibly transitions to a high-resistance state and a low-resistance state on basis of a voltage applied across the first electrode and the second electrode. At least a part of the gas-sensitive body layer is exposed to the gap. The gas-sensitive body layer has a resistance that decreases when gas containing a hydrogen atom is in contact with the second electrode.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: March 19, 2024
    Assignee: NUVOTON TECHNOLOGY CORPORATION JAPAN
    Inventors: Satoru Fujii, Zhiqiang Wei, Kazunari Homma, Shinichi Yoneda, Yasuhisa Naito, Hisashi Shima, Hiroyuki Akinaga
  • GAS SENSOR AND FUEL CELL VEHICLE
    Publication number: 20190346391
    Abstract: A gas sensor includes: a gas-sensitive body layer disposed above a substrate and including a metal oxide layer; a first electrode on the gas-sensitive body layer; and a second electrode on the gas-sensitive body layer, being apart from the first electrode by a gap. The gas-sensitive body layer has a resistance change characteristic that reversibly transitions to a high-resistance state and a low-resistance state on basis of a voltage applied across the first electrode and the second electrode. At least a part of the gas-sensitive body layer is exposed to the gap. The gas-sensitive body layer has a resistance that decreases when gas containing a hydrogen atom is in contact with the second electrode.
    Type: Application
    Filed: July 23, 2019
    Publication date: November 14, 2019
    Inventors: Satoru Fujii, Zhiqiang Wei, Kazunari Homma, Shinichi Yoneda, Yasuhisa Naito, Hisashi Shima, Hiroyuki Akinaga