Patents by Inventor Lewis J. Zook

Lewis J. Zook 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 of burning-in lining in bottom blown steelmaking furnace
    Patent number: 3947002
    Abstract: The burn-in of the refractory lining or of the refractory component of a tuyere-containing bottom plug in a bottom-blown oxygen steelmaking converter is effected with the plug in place by passing oxygen and a gaseous hydrocarbon mixed with controlled amounts of neutral gas through the respective concentric passages in tuyeres contained in the plug. The described method can be employed to burn-in a bottom plug installed in a converter together with a newly installed refractory converter lining or to burn in a newly installed bottom plug in an existing converter lining.
    Type: Grant
    Filed: July 30, 1975
    Date of Patent: March 30, 1976
    Assignee: United States Steel Corporation
    Inventors: Louis W. Frech, David H. Hubble, Lewis J. Zook