Patents by Inventor Friedhelm Neumann

Friedhelm Neumann 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).

  • Submerged nozzle for continuous casting
    Patent number: 3934640
    Abstract: A nozzle for the continuous casting of steel which has at least one lateral outlet below the slag-covered surface of the molten metal in the mold, is protected against corrosive effects of the slag at the surface of the molten metal and also against erosion in the outlet region of the nozzle by a threaded refractory ring.
    Type: Grant
    Filed: December 11, 1973
    Date of Patent: January 27, 1976
    Assignee: Concast AG
    Inventors: Friedhelm Neumann, Josef K. Zeller