Patents by Inventor Tuguo Uchino

Tuguo Uchino 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).

  • Method for manufacturing a surface-mounted type optical semiconductor device
    Patent number: 5851449
    Abstract: In manufacturing an optical semiconductor device, light-emitting elements are mounted on their respective printed boards of an insulating plate with a silver paste interposed therebetween. A sealing mold having a shape (a lens forming portion) necessary for forming a projected lens is adhered to the major surface of the insulating plate in accordance with each of the light-emitting elements of each of the printed boards. A liquid epoxy resin having a melt viscosity of 100 Pa.multidot.s to 200 Pa.multidot.s is continuously injected into the sealing mold with the lens forming portion of the sealing mold downward. The liquid epoxy resin is then hardened to form a projected, domed lens on each of the light-emitting elements. After that, the sealing mold is removed, and the insulating plate is separated for each of the light-emitting elements into surface-mounted optical semiconductor devices each having a projected, domed lens.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: December 22, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tuguo Uchino, Iwao Matumoto, Hiroshi Nagasawa