Patents by Inventor Jean-Pierre Barry

Jean-Pierre Barry 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).

  • Patent number: 5045290
    Abstract: A process for recovery of platinum and palladium from an impure substantially gold-free precious and base metal-bearing acidic chloride or mixed chloride/sulphate solution comprises the steps of: contacting the acidic solution having a pH less than about 1.5 with an organic solution comprising an 8-hydroxy quinoline solvent extraction reagent, a phase modifier and an aromatic diluent to extract simultaneously platinum and palladium into the organic solution; scrubbing the loaded organic solution to remove co-extracted impurities and acid; stripping the loaded organic with a buffer solution operating in the pH range 2-5 at 20.degree.-50.degree. C. to selectively recover the platinum; stripping the platinum-free loaded organic with 3-8 M hydrochloric acid to recover the palladium; and regenerating the organic solution by washing with water.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: September 3, 1991
    Assignee: Noranda Inc.
    Inventors: Bryn G. Harris, Serge Monette, Jean-Pierre Barry, Robert Stanley
  • Patent number: 5028260
    Abstract: A process for recovery of gold from an impure precious and base metal-bearing acidic chloride or mixed chloride/sulphate solution comprises the steps of contacting the acidic solution with a polymeric acrylic ester adsorbent ion exchange resin to selectively adsorb gold, and stripping the gold from the loaded resin by elution with water.
    Type: Grant
    Filed: July 6, 1990
    Date of Patent: July 2, 1991
    Assignee: Noranda Inc.
    Inventors: Bryn G. Harris, Jean-Pierre Barry, Serge Monette