Patents by Inventor Fred Weisgerber

Fred Weisgerber 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).

  • Patent number: 7169205
    Abstract: A process for producing liquid smelting iron in an electric arc furnace includes several electrodes, equipped with a hearth, and containing a heel covered with a non-foaming liquid slag. The process further includes the reduction of the metallic fines, in order to form pre-reduced metallic fines containing an excess of free carbon; the hot transfer of the pre-reduced metallic fines within a curtain of inert gas into the heel contained in the electric arc furnace; the agitation of the heel by the injection of gas in such a manner that the formation of crusts is avoided; and the smelting of the pre-reduced metallic fines in the electric arc furnace in order to obtain the liquid smelting iron.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: January 30, 2007
    Assignee: Paul Wurth S.A.
    Inventors: Emile Lonardi, Jean-Luc Roth, Paul Berg, Fred Weisgerber, Fred Parasch