Patents by Inventor Takayuki Ashida

Takayuki Ashida 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).

  • Matrix switch board, connection pin, and method of fabricating them
    Patent number: 5886309
    Abstract: A matrix switch board used for connecting and disconnecting a switching-system line and a subscriber line. The matrix switch board includes a board made of an insulating material, and first and second wiring patterns respectively formed on front and back sides of the board so as to cross each other. The matrix switch board further includes through holes provided at cross points of the first and second wiring patterns. In the matrix switch board, when a connection pin is inserted into at least one of the through holes, at least one of the first wiring patterns on the front side and at least one of the second wiring patterns on the back side are electrically connected to each other.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: March 23, 1999
    Assignee: Fujitsu Limited
    Inventors: Masao Hosogai, Setuo Kojima, Hitoshi Yokemura, Rie Takada, Hiroyuki Otaguro, Takayuki Ashida, Toshio Abe