Patents by Inventor Hitoshi Tozima

Hitoshi Tozima 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).

  • Easy open type can
    Patent number: 4712706
    Abstract: An easy open type can including a can closure having a top panel with a peripheral wall portion extending downwards from a circumferential edge of the top panel portion thereof. A tab is provided for opening the closure. A score line is constructed in the peripheral wall portion so as to be connected to an end of one side edge of the tab and extending over the whole circumference of the peripheral wall portion. The peripheral wall portion is mounted on and fixed to an open end portion of a can barrel. The can closure is formed of a metallic foil and a thermoplastic resin layer covering an outer surface of the metallic foil and the score line is constructed by removing only the resin layer of the peripheral wall portion of the can closure. The score line is provided in a region of the peripheral wall portion that is adhered to the open end portion of the can barrel.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: December 15, 1987
    Assignee: Hokkai Can Co., Ltd.
    Inventors: Akira Nakata, Shiroh Matsumoto, Hitoshi Tozima, Masahiko Minato