Patents by Inventor Peter Wallbrecht

Peter Wallbrecht 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).

  • Preparation of granulated alkaline earth metal carbonate
    Patent number: 5366513
    Abstract: A method for preparing granulated alkaline earth metal carbonate, particularly barium carbonate or strontium carbonate, by adding a binding agent and optionally water; granulating the resulting mixture, preferably in the presence of water; drying the granular product; and optionally subjecting the granular product to a high-temperature treatment, in which the material to be granulated and the granulated material do not contact any inorganic refractory material during the granulation, during subsequent drying, and during any high-temperature treatment.
    Type: Grant
    Filed: March 11, 1993
    Date of Patent: November 22, 1994
    Assignee: Solvay Barium Strontium GmbH
    Inventors: Dieter Goldmann, Ludwig Pfeifer, Karl Koehler, Peter Wallbrecht, Norbert Mingels