Patents by Inventor Serge Lesty

Serge Lesty 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 of heap leaching
    Patent number: 4756887
    Abstract: The present invention relates to a new process of heap leaching and comprises the following steps:(a) preparing the ground to receive the heap;(b) forming the heap;(c) sinking injection wells into the heap;(d) injecting the leaching solution by means of injection wells; and(e) recovering the leaching solution at the base of the heap, or by pumping from wells neighboring those used for injection.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: July 12, 1988
    Assignee: Compagnie Francaise de Mokta
    Inventors: Serge Lesty, Robert Surjous