Patents by Inventor Nobou Furukawa

Nobou Furukawa 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
    Patent number: 10644220
    Abstract: A piezoelectric element includes a piezoelectric body layer, a first electrode, a second electrode, a third electrode, and a first through-hole conductor. The piezoelectric body layer has rectangular first and second principal surfaces opposing each other, and includes a piezoelectric material. The first electrode is provided on the first principal surface. The second electrode is provided on the first principal surface in such a way that the second electrode is separated from the first electrode. The third electrode is provided on the second principal surface in such a way that the third electrode opposes the first electrode. The through-hole conductor penetrates the piezoelectric body layer and is connected to the second electrode and the third electrode. The first electrode has a round corner when seen in an opposing direction of the first and second principal surfaces.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: May 5, 2020
    Assignee: TDK CORPORATION
    Inventors: Yoshiki Ohta, Hideya Sakamoto, Kazushi Tachimoto, Nobou Furukawa, Akihiro Takeda