Patents by Inventor Walter Lum

Walter Lum 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).

  • Can end closure apparatus
    Patent number: 5169017
    Abstract: The can end closure member includes a removable central panel for opening the can, and a stepped panel portion allowing the can to be opened by means of a conventional can opener. The stepped panel portion has an angled configuration which recesses the scoreline of the central panel and protects the scoreline from shocks during shipping and handling. The stepped panel portion also includes a ledge portion which serves as a seat for stacking another can on the stepped panel portion without bearing upon the scoreline or the central panel.
    Type: Grant
    Filed: December 11, 1991
    Date of Patent: December 8, 1992
    Assignee: H. J. Heinz Company
    Inventors: Terry Cooper, Walter Lum, Peter Douglas