Patents by Inventor Duane E. Gerenser

Duane E. Gerenser 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).

  • Method and apparatus for forming structural members
    Patent number: 5890388
    Abstract: A method and apparatus for forming structural members from a substrate heats a middle portion of the substrate in combination with edge guide rolls for laterally displacing mass of the substrate. Top and bottom rolls shape the structural member into the desired shape. The entire substrate is annealed. Thereafter, additional roll passes can be used for improving the shape of the substrate to the desired shape.
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: April 6, 1999
    Assignee: Centre Bridge Investments
    Inventors: Duane E. Gerenser, Reinhard F. Kuffel