Patents by Inventor Joachim Vieregge

Joachim Vieregge 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).

  • Metal powders produced by the reduction of the oxides with gaseous magnesium
    Patent number: 6558447
    Abstract: Metal powder Ta and/or Nb, with or without one or metals from the group Ta, Nb, Ti, Mo, W, V, Zr and Hf, is made in a fine powder form by reduction of metal oxide by contact with a gaseous reducing agent, preferably an alkaline earth metal, to near complete reduction, leaching, further deoxidation and agglomeration, the powder so produced being sinterable to capacitor anode form and processable to other usages.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: May 6, 2003
    Assignee: H.C. Starck, Inc.
    Inventors: Leonid N. Shekhter, Terrance B. Tripp, Leonid L. Lanin, Karlheinz Reichert, Oliver Thomas, Joachim Vieregge