Patents by Inventor Klaus Walden

Klaus Walden 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).

  • Process for feeding iron sponge into an electric arc furnace
    Patent number: 4290800
    Abstract: Iron sponge, containing at least 0.5% carbon, is preheated with an oxidizing gas as the gas flows in a direction traverse to the direction of the sponge, without combustion of the iron sponge.
    Type: Grant
    Filed: September 17, 1979
    Date of Patent: September 22, 1981
    Assignee: Hamburger Stahlwerke GmbH
    Inventors: Siegfried Sensis, Joachim Schwerdtfeger, Klaus Walden, Dieter Ameling
  • Bottom outlet or discharge for use in metallurgical vessels for steel melts, particularly tundishes
    Patent number: 4268015
    Abstract: A bottom outlet or discharge for metallurgical vessels includes a sleeve brick, a nozzle brick positioned in the sleeve brick, the nozzle brick having therethrough a discharge opening, and a highly wear-resistant tubular sleeve fitted within the discharge opening of the nozzle brick. The sleeve brick, the nozzle brick and the sleeve are formed of materials such that they have thermal expansions at 1400.degree. C. of from 1.0 to 1.15%, from 0.5 to 0.8% and from 1.1 to 1.25%, respectively.
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: May 19, 1981
    Assignees: Didier-Werke AG, Hamburger Stahlwerke GmbH
    Inventors: Ernst Luhrsen, Godehard Sussmuth, Klaus Walden