Patents by Inventor Hee Mun Jang

Hee Mun Jang 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 recovery of copper from arsenic-bearing and/or antimony-bearing copper sulphide concentrates
    Patent number: 9410225
    Abstract: A process for the extraction of copper from a feed material comprising at least one of arsenic and antimony-bearing copper sulphide minerals is provided. The process includes fine-grinding the feed material and after fine-grinding, subjecting the feed material to pressure oxidation in the presence of surfactant and a halogen to produce a product slurry. The process also includes subjecting the product slurry to liquid/solid separation to obtain a pressure oxidation filtrate and solids comprising at least one of a compound of arsenic and a compound of antimony, and recovering copper from the pressure oxidation filtrate.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: August 9, 2016
    Assignees: Teck Resources Limited, Aurubis AG
    Inventors: Henry Salomon-de-Friedberg, Hee Mun Jang
  • PROCESS FOR RECOVERY OF COPPER FROM ARSENIC-BEARING AND/OR ANTIMONY-BEARING COPPER SULPHIDE CONCENTRATES
    Publication number: 20150329937
    Abstract: A process for the extraction of copper from a feed material comprising at least one of arsenic and antimony-bearing copper sulphide minerals is provided. The process includes fine-grinding the feed material and after fine-grinding, subjecting the feed material to pressure oxidation in the presence of surfactant and a halogen to produce a product slurry. The process also includes subjecting the product slurry to liquid/solid separation to obtain a pressure oxidation filtrate and solids comprising at least one of a compound of arsenic and a compound of antimony, and recovering copper from the pressure oxidation filtrate.
    Type: Application
    Filed: May 13, 2014
    Publication date: November 19, 2015
    Applicants: Teck Resources Limited, Aurubis AG
    Inventors: Henry Salomon-de-Friedberg, Hee Mun Jang