Patents by Inventor Susumu Takigawa

Susumu Takigawa 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: 7532091
    Abstract: A piezoelectric vibrator has an airtight terminal including leads each having a plane portion. A vibrating piece includes a first part having a preselected thickness and a second part having a thickness smaller than the preselected thickness. The plane portion of each of the leads is connected to the second part of the vibrating piece. A case covers a periphery of the vibrating piece and is sealed on an outer circumference of the airtight terminal.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: May 12, 2009
    Assignee: Seiko Instruments Inc.
    Inventors: Masaru Matsuyama, Susumu Takigawa
  • Publication number: 20060176128
    Abstract: There is provided a piezoelectric vibrator which achieves the stabilization of the vibrating characteristics by improving the mount accuracy and mount strength to lead of the vibrating piece as well as be more miniaturized without damaging the electrical insulation. A piezoelectric vibrator includes an airtight terminal having two leads, a vibrating piece connected to the lead and a case covering a periphery of the vibrating piece and sealed on an outer circumference of the airtight terminal, wherein a level difference is provided in a mount part of the vibrating piece fixed to the lead. Accordingly, the mount position of the vibrating piece approaches the center of the case, and the large clearance between the case and the vibrating piece can be obtained as well as there is obtained the distance between the lead and the case.
    Type: Application
    Filed: February 9, 2006
    Publication date: August 10, 2006
    Inventors: Masaru Matsuyama, Susumu Takigawa