Patents by Inventor Eberhard Luederitz

Eberhard Luederitz 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).

  • Method for recovering rhenium and other metals from rhenium-bearing materials
    Patent number: 8383070
    Abstract: A method of recovering rhenium (Re) and other metals from Re-bearing materials in the form of ammonium perrhenate having at least the step of adding Re-bearing materials into a leaching slurry. Additionally, the method has the step of adjusting the pH of the slurry to obtain Re in soluble form in a metal salt solution and insoluble residues; filtering the metal salt solution to remove the insoluble residues; selectively precipitating Re from the metal salt solution; filtering the Re precipitate from the metal salt solution to obtain a Re filtercake; and formulating and drying the Re filtercake to obtain a Re sulfide product. The method further has the step of combining the Re sulfide product with a Molybdenum (Mo) concentrate containing Re to obtain a Mo/Re concentrate; roasting the Mo/Re concentrate to obtain Mo oxide product and a flue gas containing Re; and treating the flue gas containing Re to obtain ammonium perrhenate.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: February 26, 2013
    Assignees: World Resources Company, WRC World Resources Company GmbH
    Inventors: Eberhard Luederitz, Ulrich R. Schlegel, Peter T. Halpin, Dale L. Schneck
  • METHOD FOR RECOVERING RHENIUM AND OTHER METALS FROM RHENIUM-BEARING MATERIALS
    Publication number: 20110229366
    Abstract: The present invention relates to a method of recovering rhenium (Re) and other metals from Re-bearing materials.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 22, 2011
    Inventors: Eberhard LUEDERITZ, Ulrich R. Schlegel, Peter T. Halpin, Dale L. Schneck