Patents by Inventor Takaaki Ushiki

Takaaki Ushiki 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).

  • Substrate with optical waveguide and method of making the same
    Patent number: 6236786
    Abstract: A substrate with an optical waveguide includes a substrate having a through hole and two sides, a first optical waveguide defined in the though hole of the substrate so as to linearly extend between both sides of the substrate, a second optical waveguide defined on at least one of the sides of the substrate, and direction changing means for changing a transmitting direction of a light signal from either one of the first and second optical waveguides to the other. Each optical waveguide includes a core layer for transmitting the light signals and a clad layer formed around the core layer.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: May 22, 2001
    Assignees: Brother Kogyo Kabushiki Kaisha
    Inventors: Hikoharu Aoki, Takaaki Ushiki, Hirochika Nakajima