Patents by Inventor Mitsuhiro HABUTA

Mitsuhiro HABUTA 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).

  • Patent number: 10886891
    Abstract: An acoustic wave device includes: first and second terminals located on a first surface of a first substrate; a third terminal that is located on the first surface and is a ground terminal; series resonators located on a second surface of the first substrate and electrically connected in series with a path between the first and second terminals; a parallel resonator that is located on the second surface and has a first end electrically connected to the path and a second end electrically connected to the third terminal; and a fourth terminal located on the first surface, at least a part of the fourth terminal overlapping with, in a thickness direction of the first substrate, at least one of one or more first series resonators of the series resonators, the one or more first series resonators having both ends to which other series resonators are electrically connected.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: January 5, 2021
    Assignee: TAIYO YODEN CO., LTD.
    Inventors: Takuma Kuroyanagi, Mitsuhiro Habuta
  • Publication number: 20200212865
    Abstract: An acoustic wave device includes: a substrate; a lower electrode, an air gap being interposed between the lower electrode and the substrate; a piezoelectric film located on the lower electrode; and an upper electrode located on the piezoelectric film such that a resonance region where at least a part of the piezoelectric film is interposed between the upper electrode and the lower electrode is formed and the resonance region overlaps with the air gap in plan view, wherein a surface facing the substrate across the air gap of the lower electrode in a center region of the resonance region is positioned lower than a surface closer to the piezoelectric film of the substrate in an outside of the air gap in plan view.
    Type: Application
    Filed: December 10, 2019
    Publication date: July 2, 2020
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Taisei IRIEDA, Tatsuya AOKI, Mitsuhiro HABUTA, Satoshi ORITO, Shinji TANIGUCHI
  • Publication number: 20190280670
    Abstract: An acoustic wave device includes: first and second terminals located on a first surface of a first substrate; a third terminal that is located on the first surface and is a ground terminal; series resonators located on a second surface of the first substrate and electrically connected in series with a path between the first and second terminals; a parallel resonator that is located on the second surface and has a first end electrically connected to the path and a second end electrically connected to the third terminal; and a fourth terminal located on the first surface, at least a part of the fourth terminal overlapping with, in a thickness direction of the first substrate, at least one of one or more first series resonators of the series resonators, the one or more first series resonators having both ends to which other series resonators are electrically connected.
    Type: Application
    Filed: February 6, 2019
    Publication date: September 12, 2019
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Takuma KUROYANAGI, Mitsuhiro HABUTA