Patents by Inventor Yuko Zenpuku

Yuko Zenpuku 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).

  • Lid member for food container
    Patent number: 6959832
    Abstract: A lid member for a food container having a layered structure in which a surface sheet is laid on a composite sheet, said surface sheet including an easily-peelable area that is easily separated from the composite sheet, formed by applying a lubricant between the surface sheet and the composite sheet, said surface sheet including a non-peelable area adjacent to said easily-peelable area; a first slit cut vertical-sectionally through the composite sheet, said first slit defining one or more apertures in said lid to form an opening area in said composite sheet; a second slit in said surface sheet defining a boundary between the easily-peelable area and said non-peelable area of said surface sheet; and said surface sheet being adhered to said composite sheet at said composite sheet opening area over an area that is smaller than said composite sheet opening area.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: November 1, 2005
    Assignee: Nissin Shokuhin Kabushiki Kaisha
    Inventors: Kiyoshi Sawada, Mitsuo Yoshimura, Hirofumi Kawai, Takashi Takagi, Yuko Zenpuku