Patents by Inventor Alain Alexandre Sonntag

Alain Alexandre Sonntag 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 selectively dissolving non-ferrous metals contained in pyritic ores
    Patent number: 3998628
    Abstract: A method for selectively dissolving non-ferrous metals contained in pyritic ores by the steps of crushing the ores, introducing the crushed ore at a temperature above the ambient temperature into a reaction vessel containing a solution of chlorides of a metal having two valance states, and injecting gaseous chlorine into the reaction vessel at a rate such that the oxido-reduction potential of the solution of chlorides remains between 400 and 700 mv during the operation.
    Type: Grant
    Filed: February 26, 1975
    Date of Patent: December 21, 1976
    Assignee: Societe Miniere et Metallurgique de Penarroya
    Inventors: Louis Gandon, Jean-Michel Demarthe, Alain Alexandre Sonntag