Patents by Inventor Joseph J. Linhart

Joseph J. Linhart 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).

  • Ceramic brick retainer band for steel ladle
    Patent number: 4886247
    Abstract: A metallurgical ladle including a steel shell and refractory brick lining includes a refractory brick retaining ring formed in segments from a ceramic material, with the segments being releasably secured to the inner surface of the steel shell and overlying the lining brick. The ceramic material preferably is reinforced with metal fiber and preferably has a top surface extending above the open top of the steel shell.
    Type: Grant
    Filed: November 8, 1988
    Date of Patent: December 12, 1989
    Assignee: National Steel Corporation
    Inventors: Donald B. Hoffman, Joseph J. Linhart, Raymond C. Stoces