Patents by Inventor Frank Schrumpf

Frank Schrumpf 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 producing metal hydroxides or alkaline metal carbonates
    Publication number: 20030141199
    Abstract: The invention relates to a method for producing metal hydroxides or alkaline metal carbonates by anode dissolution of the corresponding metals and precipitation of the hydroxides or alkaline carbonates in an aqueous medium. The anode dissolution of the metal components is carried out in the anode compartment of a three-compartment electrolytic cell. An aqueous auxiliary salt solution is fed to an intermediate compartment that is disposed between the anode compartment and the cathode compartment and that is separated therefrom by a porous membrane. An at least not alkaline metal salt solution is continuously taken from the anode compartment while an alkaline auxiliary salt solution is continuously taken from the cathode compartment. The at least not alkaline metal salt solution and the alkaline auxiliary salt solution are combined outside the electrolytic cell for the purpose of precipitating metal hydroxides or alkaline metal carbonates.
    Type: Application
    Filed: December 13, 2002
    Publication date: July 31, 2003
    Inventors: Armin Olbrich, Astrid Grge, Frank Schrumpf, Juliane Meese-Marktscheffel, Viktor Stoller, Gerhard Gille, Josef Schmoll, Michael Kruft, Dirk Naumann
  • Cobaltous oxide containing finely-dispersed metallic cobalt, methods of producing the same and use thereof
    Patent number: 6277305
    Abstract: The present invention relates to cobalt(II) oxide containing metallic cobalt, to a process for the production thereof and to the use thereof.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: August 21, 2001
    Assignee: H. C. Starck GmbH & Co. KG
    Inventors: Astrid Görge, Juliane Meese-Marktscheffel, Dirk Naumann, Armin Olbrich, Frank Schrumpf
  • Basic cobaltous carbonates, process for preparing the same and their use
    Patent number: 6183621
    Abstract: The present invention relates to processes for the production of cobalt(II) carbonates corresponding to the general formula Co[(OH)2]a[CO3]1−a, cobalt(II) carbonates and cobalt(II) oxalate carbonates obtainable by the process and the use thereof.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: February 6, 2001
    Assignee: H. C. Stack GmbH & Co. KG
    Inventors: Astrid Görge, Juliane Messe-Marktscheffel, Dirk Naumann, Armin Olbrich, Frank Schrumpf
  • Cobalt metal agglomerates, a method of producing them and their use
    Patent number: 6015447
    Abstract: The present invention relates to cobalt metal agglomerates consisting of peanut-shaped primary particles, to a process for the production thereof and to the use thereof.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: January 18, 2000
    Assignee: H.C. Starck GmbH & Co. KG
    Inventors: Astrid Gorge, Juliane Meese-Marktscheffel, Dirk Naumann, Armin Olbrich, Frank Schrumpf