Patents by Inventor Georges Valence

Georges Valence 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 the lead and zinc values in secondary scrubber muds from blast furnace gases
    Patent number: 4313822
    Abstract: The method consists of subjecting said muds to a particle size grading to concentrate the lead and zinc contained notably in the fines, and recovering said fraction containing the lead and the zinc, the other fraction being recyclable to the blast furnaces. The invention is useful in the preparation of feed materials for Waelz-Berzelius furnaces.
    Type: Grant
    Filed: July 24, 1980
    Date of Patent: February 2, 1982
    Assignee: Agence Nationale de Valorisation de la Recherche (ANVAR)
    Inventors: Jean M. Cases, Georges Valence, Olivier Lietard
  • Method for recovering the lead and zinc values in secondary scrubber muds from blast furnace gases
    Patent number: 4250027
    Abstract: The method consists of subjecting said muds to a particle size grading to concentrate the lead and zinc contained notably in the fines, and recovering said fraction containing the lead and the zinc, the other fraction being recyclable to the blast furnaces. The invention is useful in the preparation of feed materials for Waelz-Berzelius furnaces.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: February 10, 1981
    Assignee: Agence Nationale de Valorisation de la Recherche (ANVAR)
    Inventors: Jean M. Cases, Georges Valence, Olivier Lietard