Patents by Inventor Humihisa Itoh

Humihisa Itoh 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 vibrator
    Patent number: 7247976
    Abstract: A piezoelectric vibrator having excellent shock resistance and high reliability is offered. The centers of first and second piezoelectric vibrating plates are supported by pillars on a main surface of an enclosure and nearly or substantially parallel to the main surface of the enclosure. Spacers having a Young's modulus of less than 2 GPa are mounted on both end sides of the second piezoelectric vibrating plate to prevent contact between the vibrating plates, thus preventing damage. Other spacers are mounted on the main surface of the enclosure in positions corresponding to the first-mentioned spacers to prevent contact with the main surface of the enclosure, thus preventing damage to the second piezoelectric vibrating plate.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: July 24, 2007
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Norikazu Sashida, Humihisa Itoh, Shigeo Ishii, Yoshiyuki Watanabe
  • Piezoelectric vibrator
    Patent number: 7180225
    Abstract: A piezoelectric vibrator having excellent shock resistance and high reliability is offered. The centers of first and second piezoelectric vibrating plates are supported by pillars on a main surface of an enclosure and nearly or substantially parallel to the main surface of the enclosure. Spacers having a Young's modulus of less than 2 GPa are mounted on both end sides of the second piezoelectric vibrating plate to prevent contact between the vibrating plates, thus preventing damage. Other spacers are mounted on the main surface of the enclosure in positions corresponding to the first-mentioned spacers to prevent contact with the main surface of the enclosure, thus preventing damage to the second piezoelectric vibrating plate.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: February 20, 2007
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Norikazu Sashida, Humihisa Itoh, Shigeo Ishii, Yoshiyuki Watanabe
  • PIEZOELECTRIC VIBRATOR
    Publication number: 20070013270
    Abstract: A piezoelectric vibrator having excellent shock resistance and high reliability is offered. The centers of first and second piezoelectric vibrating plates are supported by pillars on a main surface of an enclosure and nearly or substantially parallel to the main surface of the enclosure. Spacers having a Young's modulus of less than 2 GPa are mounted on both end sides of the second piezoelectric vibrating plate to prevent contact between the vibrating plates, thus preventing damage. Other spacers are mounted on the main surface of the enclosure in positions corresponding to the first-mentioned spacers to prevent contact with the main surface of the enclosure, thus preventing damage to the second piezoelectric vibrating plate.
    Type: Application
    Filed: September 19, 2006
    Publication date: January 18, 2007
    Inventors: Norikazu Sashida, Humihisa Itoh, Shigeo Ishii, Yoshiyuki Watanabe
  • Piezoelectric vibrator
    Publication number: 20050023937
    Abstract: A piezoelectric vibrator having excellent shock resistance and high reliability is offered. The centers of first and second piezoelectric vibrating plates are supported by pillars on a main surface of an enclosure and nearly or substantially parallel to the main surface of the enclosure. Spacers having a Young's modulus of less than 2 GPa are mounted on both end sides of the second piezoelectric vibrating plate to prevent contact between the vibrating plates, thus preventing damage. Other spacers are mounted on the main surface of the enclosure in positions corresponding to the first-mentioned spacers to prevent contact with the main surface of the enclosure, thus preventing damage to the second piezoelectric vibrating plate.
    Type: Application
    Filed: July 23, 2004
    Publication date: February 3, 2005
    Inventors: Norikazu Sashida, Humihisa Itoh, Shigeo Ishii, Yoshiyuki Watanabe