Patents by Inventor Georg Nietfeld

Georg Nietfeld 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 ELECTROCHEMICAL DECOMPOSITION OF SUPERALLOYS
    Publication number: 20080110767
    Abstract: A process for recovery of valuable metals from superalloys by electrochemical decomposition is described, both electrodes being formed by the superalloy and the polarity of the electrolysis current being reversed with a frequency of from 0.005 to 5 Hz.
    Type: Application
    Filed: June 21, 2007
    Publication date: May 15, 2008
    Applicant: H.C. Starck GmbH
    Inventors: Viktor Stoller, Armin Olbrich, Juliane Meese-Marktscheffel, Wolfgang Mathy, Michael Erb, Georg Nietfeld, Gerhard Gille
  • Process for electrochemical decomposition of superalloys
    Publication number: 20030136685
    Abstract: A process for recovery of valuable metals from superalloys by electrochemical decomposition is described, both electrodes being formed by the superalloy and the polarity of the electrolysis current being reversed with a frequency of from 0.005 to 5 Hz.
    Type: Application
    Filed: November 12, 2002
    Publication date: July 24, 2003
    Inventors: Viktor Stoller, Armin Olbrich, Juliane Meese-Marktscheffel, Wolfgang Mathy, Michael Erb, Georg Nietfeld, Gerhard Gille
  • Cobalt-bound diamond tools, a process for their manufacture and their use
    Patent number: 5181938
    Abstract: Cobalt-bound diamond tool (e.g. for cutting, drilling polishing) composite materials comprising diamond particles in uniform matrix of cobalt-boron alloy with 1-5 weight percent and uniform, stable and controllable matrix hardness of about 200 to 650 HB.sub.30.
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: January 26, 1993
    Assignee: Hermann C. Starck Berlin GmbH & Co.
    Inventors: Bruno E. Krismer, Georg Nietfeld