Patents by Inventor Ryoichi Yoshinaga

Ryoichi Yoshinaga 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).

  • Case assembly
    Patent number: 6116417
    Abstract: A CD or CD-ROM case comprises a receiving member and a lid member to be fitted over the receiving member. The receiving member is provided with a piece at its middle position. The piece is formed by arranging slits and projections in a columnar form, and is provided with a pusher to bias a CD or CD-ROM upwardly.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: September 12, 2000
    Assignee: J-Plan Corporation
    Inventors: Ryoichi Yoshinaga, Masahito Kawashima