Patents by Inventor Dennis Harpole

Dennis Harpole 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).

  • Patent number: 6395109
    Abstract: A bar product prepared from microalloyed bar steel is provided. The bar product is prepared by hot rolling and heat treating a microalloyed bar steel. The hot rolled and heat treated microalloyed bar steel is prepared by steps of hot rolling a preform of the microalloyed bar steel at a temperature of between about 1,400° F. and about 2,200° F. to provide a steel bar having a diameter of between about ¾ inch and about four inches, cooling the steel bar to provide a surface temperature of below about 1,100° F., and heat treating the steel bar in an environment having a temperature of between about 500° F. and about 1,300° F. The bar product is preferably prepared without a step of cold drawing. In particular, the bar product is preferably prepared without a step of drawing to provide a 10% to a 35% reduction.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: May 28, 2002
    Assignee: Cargill, Incorporated
    Inventors: William J. Peppler, Dennis Harpole, Ken K. Wong