Patents by Inventor Ryuhei SASAKI

Ryuhei SASAKI 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).

  • Vibration device
    Patent number: 11665967
    Abstract: A vibration device includes a piezoelectric vibrator having a piezoelectric element and a diaphragm having a pair of main surfaces facing each other, the piezoelectric element being bonded to the main surface, a vibration member where the piezoelectric vibrator is disposed, and an adhesive member disposed between the diaphragm and the vibration member and bonding the diaphragm and the vibration member. Each of the pair of main surfaces of the diaphragm has a rectangular shape when viewed from a facing direction of the pair of main surfaces, and the adhesive member is disposed in a facing manner on at least a pair of sides of the main surfaces.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: May 30, 2023
    Assignee: TDK CORPORATION
    Inventors: Ryuhei Sasaki, Yoshikazu Shimura, Yoshiki Ohta, Kazushi Tachimoto, Hideya Sakamoto, Tetsuyuki Taniguchi, Akihiro Takeda
  • Piezoelectric element
    Patent number: 11581479
    Abstract: In a piezoelectric element, shift of a resonance point to a low-pitched sound side is achieved. A resonance point of a piezoelectric element moves to a low-pitched sound side when an active region is configured to be surrounded by an inactive region as in the configuration of the piezoelectric element. According to the piezoelectric element whose resonance point is moved to a low-pitched sound side, the piezoelectric element can realize a sound pressure that is sufficiently high for practical use when it is applied to an acoustic device.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: February 14, 2023
    Assignee: TDK CORPORATION
    Inventors: Yoshikazu Shimura, Kaoru Kijima, Hideya Sakamoto, Kazushi Tachimoto, Ryuhei Sasaki, Yoshiki Ohta, Akihiro Takeda
  • VIBRATION DEVICE
    Publication number: 20210384409
    Abstract: A vibration device includes a piezoelectric vibrator having a piezoelectric element and a diaphragm having a pair of main surfaces facing each other, the piezoelectric element being bonded to the main surface, a vibration member where the piezoelectric vibrator is disposed, and an adhesive member disposed between the diaphragm and the vibration member and bonding the diaphragm and the vibration member. Each of the pair of main surfaces of the diaphragm has a rectangular shape when viewed from a facing direction of the pair of main surfaces, and the adhesive member is disposed in a facing manner on at least a pair of sides of the main surfaces.
    Type: Application
    Filed: October 25, 2018
    Publication date: December 9, 2021
    Applicant: TDK CORPORATION
    Inventors: Ryuhei SASAKI, Yoshikazu SHIMURA, Yoshiki OHTA, Kazushi TACHIMOTO, Hideya SAKAMOTO, Tetsuyuki TANIGUCHI, Akihiro TAKEDA
  • PIEZOELECTRIC ELEMENT
    Publication number: 20200321513
    Abstract: In a piezoelectric element, shift of a resonance point to a low-pitched sound side is achieved. A resonance point of a piezoelectric element moves to a low-pitched sound side when an active region is configured to be surrounded by an inactive region as in the configuration of the piezoelectric element. According to the piezoelectric element whose resonance point is moved to a low-pitched sound side, the piezoelectric element can realize a sound pressure that is sufficiently high for practical use when it is applied to an acoustic device.
    Type: Application
    Filed: December 12, 2018
    Publication date: October 8, 2020
    Applicant: TDK CORPORATION
    Inventors: Yoshikazu SHIMURA, Kaoru KIJIMA, Hideya SAKAMOTO, Kazushi TACHIMOTO, Ryuhei SASAKI, Yoshiki OHTA, Akihiro TAKEDA
  • Vibration element
    Patent number: D933616
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: October 19, 2021
    Assignee: TDK CORPORATION
    Inventors: Yoshiki Ohta, Yoshikazu Shimura, Ryuhei Sasaki, Kazushi Tachimoto, Hideya Sakamoto, Tetsuyuki Taniguchi, Akihiro Takeda