Patents by Inventor Tokihito Shinozuka

Tokihito Shinozuka 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).

  • Cushioning material for mattresses
    Patent number: 5008141
    Abstract: A cushioning material for mattresses is formed by needling a pile of crimped fibers to form a flat board, and then continuously and alternately bending the flat board to form a corrugated web. The corrugated web thus formed has a number of side-by-side contact portions and a number of bent portions connecting the side-by-side contact portions. The bent portions thus form a relatively soft surface portion of the cushioning material, and the side-by-side contact portions provide a moderately rigid portion of the cushioning material. The corrugated web may be held together by sewing, bonding or welding.
    Type: Grant
    Filed: May 16, 1989
    Date of Patent: April 16, 1991
    Assignee: Paramount Bed Co., Ltd.
    Inventor: Tokihito Shinozuka