Patents by Inventor Seiichi Nishiyama

Seiichi Nishiyama 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).

  • Method for making a plastic container
    Patent number: 4354996
    Abstract: While a portion of a blank made of molecularly orientable plastic resin, which is to be formed into the flange portion of a cup-shaped container, and another portion of the blank, which is to be formed into the bottom wall portion of the container are individually compressed at the molecularly orientable temperature, the portion to be formed into the bottom wall portion is introduced into a die cavity, to form the side wall portion of the container with the material extended by the compressing operation, thereby to form a cup-shaped container with a flange portion.
    Type: Grant
    Filed: January 9, 1981
    Date of Patent: October 19, 1982
    Assignee: Toyo Seikan Kaisha, Ltd.
    Inventors: Seiichi Nishiyama, Muneki Yamada