Patents by Inventor Hector Petit-Laurent

Hector Petit-Laurent 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 for recovering copper and molybdenum from low grade copper concentrates
    Patent number: 4478698
    Abstract: Low grade copper concentrates containing molybdenum are roasted under conditions to form copper and molybdenum compounds which are soluble in dilute sulfuric acid solutions.Molybdenum is then recovered by solvent extraction from these solutions and further precipitated as ammonium molybdate, while copper can be electrowinned or precipitated from the raffinate.Overall recovery efficiencies are 96% for copper and 84% for molybdenum.
    Type: Grant
    Filed: January 3, 1984
    Date of Patent: October 23, 1984
    Assignee: Corporacion Nacional Del Cobre De Chile
    Inventors: Igor Wilkomirsky, Andres Reghezza, Hector Petit-Laurent