Patents by Inventor Carl F. Orrling

Carl F. Orrling 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 for operating a steelmaking furnace during a steelmaking process
    Patent number: 6500224
    Abstract: The invention is directed to a method for operating a steelmaking furnace including the steps of charging steelmaking materials into the steelmaking furnace, blowing oxygen into the steelmaking furnace, discontinuing the oxygen blow when the charged steelmaking materials are reduced to a liquid steel product, determining the temperature of the finished liquid steel product, blowing a nitrogen gas coolant into the steelmaking furnace to reduce the temperature of the finished liquid steel product to an aim tapping temperature, discontinuing the nitrogen gas coolant blow when the finished liquid steel product temperature is lowered to the aim tapping temperature, and tapping the finished liquid steel product at the aim tapping temperature for downstream processing.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: December 31, 2002
    Assignee: Bethlehem Steel Corporation
    Inventors: Carl F. Orrling, Daniel Goldstein