Patents by Inventor Kenzi Yokota

Kenzi Yokota 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).

  • Easily recyclable container
    Patent number: 6391402
    Abstract: An easily recyclable container obtained by subjecting a sheet L which is a laminate of a plurality of layers, to vacuum forming and/or pressure forming, in which container the sheet L has such two adjacent layers as to give the minimum peeling strength and can be manually separated into two portions at the interface of the two adjacent layers, and when the portion of the sheet L present from the interface of said two adjacent layers to the inner surface of the container is named as film portion F and the portion of the sheet L present from said interface to the outer surface of the container is named as sheet portion S, the peeling strength required for peeling of the film portion F from the sheet portion S is set at 2 to 45 g/15 mm (width) by allowing said two adjacent layers giving the minimum peeling strength to be constituted by respective particular resins or resin compositions.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: May 21, 2002
    Assignees: Japan Polystyrene, Inc., Yokota Co., Ltd.
    Inventors: Kenzi Yokota, Akio Uemura, Takahiro Ishii, Masato Takaku, Masaru Sato