Patents by Inventor Leonard M. Saunders

Leonard M. Saunders 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).

  • Preshaped blast furnace hearth construction
    Patent number: 4004791
    Abstract: A blast furnace hearth constructed of carbon blocks and having an initially dished upper face. The hearth includes a plurality of courses of full carbon beams and a plurality of courses of stub carbon beams. Each course of the latter extends from the outer wall toward the center of the furnace, and the stub beams of each course are progressively shorter from the lowermost upwardly. The hearth provides longer life without requiring proportionately as much carbon as a flat hearth of equivalent life.
    Type: Grant
    Filed: March 17, 1976
    Date of Patent: January 25, 1977
    Assignee: United States Steel Corporation
    Inventors: Leonard M. Saunders, Earl W. Sieger