Patents by Inventor Daiki Murauchi

Daiki Murauchi 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).

  • Piezoelectric element, and resonator using piezoelectric element
    Patent number: 11495726
    Abstract: A piezoelectric element that includes a substrate, a lower electrode layer on the substrate, an intermediate layer on the lower electrode layer, and an upper electrode layer on the intermediate layer. The intermediate layer includes a first piezoelectric layer including an aluminum nitride as a main component thereof and located between the lower electrode layer and the upper electrode layer, a first buffer layer including an aluminum nitride as a main component and located between the first piezoelectric layer and the upper electrode layer, a first intermediate electrode layer located between the first buffer layer and the upper electrode layer, and a second piezoelectric layer located between the first intermediate electrode layer and the upper electrode layer.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: November 8, 2022
    Assignee: MURATA MANUFACTURING CO, LTD.
    Inventors: Yasuhiro Aida, Daiki Murauchi
  • PIEZOELECTRIC ELEMENT, AND RESONATOR USING PIEZOELECTRIC ELEMENT
    Publication number: 20190280181
    Abstract: A piezoelectric element that includes a substrate, a lower electrode layer on the substrate, an intermediate layer on the lower electrode layer, and an upper electrode layer on the intermediate layer. The intermediate layer includes a first piezoelectric layer including an aluminum nitride as a main component thereof and located between the lower electrode layer and the upper electrode layer, a first buffer layer including an aluminum nitride as a main component and located between the first piezoelectric layer and the upper electrode layer, a first intermediate electrode layer located between the first buffer layer and the upper electrode layer, and a second piezoelectric layer located between the first intermediate electrode layer and the upper electrode layer.
    Type: Application
    Filed: May 22, 2019
    Publication date: September 12, 2019
    Inventors: Yasuhiro Aida, Daiki Murauchi