Patents by Inventor Jay W. Witter

Jay W. Witter 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).

  • Refractory retaining apparatus
    Patent number: 5499798
    Abstract: An improvement is provided in apparatus for retaining refractory in a metallurgical vessel. The improvement includes a wedge-shaped metal ring extending along the inner periphery of a metal shell of the vessel adjacent to an opening at one end thereof and refractory material having an angular surface for abutting an angular surface of the metal ring.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: March 19, 1996
    Assignee: USX Corporation
    Inventors: Jay W. Witter, Michael Slezak