Patents by Inventor Shitoshi Yoshida

Shitoshi Yoshida 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).

  • Resin tablet for plastic encapsulation and method of manufacturing of plastic encapsulation using the resin tablet
    Patent number: 5043199
    Abstract: The present invention provides a resin tablet for plastic encapsulation molding by the transfer molding process. A tablet body is obtained by compressing powdered thermosetting resin and is covered by a covering membrane. A method of manufacturing a plastic encapsulation using such a resin tablet includes exposing the surface of tablet body by breaking the covering membrane in a pot and pressing the thermosetting resin of exposed tablet body with the plunger for encapsulated molding.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: August 27, 1991
    Assignee: Fujitsu Limited
    Inventors: Akihiro Kubota, Shitoshi Yoshida, Shigeru Sato, Kiyoshi Tunoda, Osamu Yamauchi