Patents by Inventor Dean Lee Johnson

Dean Lee Johnson 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).

  • Apparatus and method for annealing container side wall edge for necking
    Patent number: 6349586
    Abstract: The trimmed edge of a drawn and ironed aluminum alloy container body is heated to provide a substantially circumferentially uniform profile in the region adjacent an open end, prior to necking of such region. The temperature profile is sufficient to provide the region to be necked with an annealing temperature, preferably involving a temperature, at the trimmed edge, up to about 550 F. or more, before partial cooling. Annealing in this fashion is believed to improve formability in such a fashion that tensile and yield strength progressively increasing during the necking operations.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: February 26, 2002
    Assignee: Ball Corporation
    Inventors: Dean Lee Johnson, Terre Reingardt