Patents by Inventor Eizi Aizawa

Eizi Aizawa 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).

  • Lapped seam can
    Patent number: 4117188
    Abstract: A lapped seam can having a high safety characteristic used as containers of soft drinks or beer wherein the cut-burrs at the end of the inner end portion of the can blank are completely removed so that micro-leak passages apt to occur in the lapped seam can are shut off, thereby permitting a long term storage of the can content without deterioration by preventing metal from being dissolved out from said inner end portion.
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: September 26, 1978
    Assignee: Hokkai Can Co. Ltd.
    Inventors: Yuzo Takahashi, Yoshimi Wazima, Akira Nakada, Yasuyuki Tanaka, Katsumi Nagai, Nobuo Takahashi, Hiroshi Matsuda, Eizi Aizawa, Shiro Oyama