Patents by Inventor Klaus V. Ploetz

Klaus V. Ploetz 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).

  • Electro-metal smelting furnace with taphole arranged at the bottom
    Patent number: 4401296
    Abstract: The invention concerns an electro-metal smelting furnace with at least one taphole located at the bottom with which hole is associated a closure equipped with a drive.
    Type: Grant
    Filed: May 22, 1981
    Date of Patent: August 30, 1983
    Assignee: Mannesmann DeMag AG
    Inventors: Klaus V. Ploetz, Ludger Zangs, Ralf Schneider, Hannsgeorg Bauer, Josef Otto, Manfred Walter, Helmut Meyer, Erich Heinrich