Patents by Inventor Keita MATSUOKA

Keita MATSUOKA 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: 11284196
    Abstract: Diaphragms (4, 5, 6, 7) each include laminated layers including a piezoelectric layer. The diaphragms (4, 5, 6, 7) are each warped to oscillate due to expansion and contraction of the piezoelectric layer or due to an oscillatory force from the outside. The diaphragms have mutually different resonance frequencies. A casing (2) has an internal space (2C) for accommodating the diaphragms (4, 5, 6, 7) and a fixing part (2D) for fixing a portion of each of the diaphragms (4, 5, 6, 7). The casing (2) transmits oscillations between the diaphragms (4, 5, 6, 7) and the outside via the fixing part (2D).
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: March 22, 2022
    Assignee: DAI-ICHI SEIKO CO., LTD.
    Inventors: Kenji Ogata, Shogo Kurogi, Keita Matsuoka, Yoshiyuki Watanabe
  • VIBRATION DEVICE
    Publication number: 20210227329
    Abstract: Diaphragms (4, 5, 6, 7) each include laminated layers including a piezoelectric layer. The diaphragms (4, 5, 6, 7) are each warped to oscillate due to expansion and contraction of the piezoelectric layer or due to an oscillatory force from the outside. The diaphragms have mutually different resonance frequencies. A casing (2) has an internal space (2C) for accommodating the diaphragms (4, 5, 6, 7) and a fixing part (2D) for fixing a portion of each of the diaphragms (4, 5, 6, 7). The casing (2) transmits oscillations between the diaphragms (4, 5, 6, 7) and the outside via the fixing part (2D).
    Type: Application
    Filed: July 14, 2017
    Publication date: July 22, 2021
    Inventors: Kenji OGATA, Shogo KUROGI, Keita MATSUOKA, Yoshiyuki WATANABE