Patents by Inventor Vincent R. Coleman

Vincent R. Coleman 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 for heat treating steel plates
    Patent number: 4826138
    Abstract: A method and apparatus for heat treating steel plates subject to longitudinal length distortion wherein the plate at a temperature of the critical temperature of the steel passes through leveling rolls to remove the length distortion and immediately thereafter through quenching rolls which maintain length uniformity during quenching of the plate.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: May 2, 1989
    Assignee: Van Dorn Company
    Inventor: Vincent R. Coleman