Patents by Inventor Samir Chefai

Samir Chefai 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).

  • Co-current and counter current resin-in-leach in gold leaching processes
    Patent number: 10415116
    Abstract: A method and system are provided in which a gold and/or silver-collecting resin-in-leach circuit comprises both co-current and counter-current sections.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: September 17, 2019
    Assignee: Barrick Gold Corporation
    Inventors: Yeonuk Choi, Samir Chefai
  • Co-Current and Counter Current Resin-In-Leach in Gold Leaching Processes
    Publication number: 20180030571
    Abstract: A method and system are provided in which a gold and/or silver-collecting resin-in-leach circuit comprises both co-current and counter-current sections.
    Type: Application
    Filed: October 5, 2017
    Publication date: February 1, 2018
    Inventors: Yeonuk CHOI, Samir CHEFAI
  • Co-current and counter current resin-in-leach in gold leaching processes
    Patent number: 9790572
    Abstract: A method and system are provided in which a gold and/or silver-collecting resin-in-leach circuit comprises both co-current and counter-current sections.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: October 17, 2017
    Assignee: Barrick Gold Corporation
    Inventors: Yeonuk Choi, Samir Chefai
  • Co-current and counter current resin-in-leach in gold leaching processes
    Patent number: 8715389
    Abstract: A method and system are provided in which a gold and/or silver-collecting resin-in-leach circuit comprises both co-current and counter-current sections.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: May 6, 2014
    Assignee: Barrick Gold Corporation
    Inventors: Yeonuk Choi, Samir Chefai
  • Co-Current and Counter Current Resin-In-Leach in Gold Leaching Processes
    Publication number: 20140035207
    Abstract: A method and system are provided in which a gold and/or silver-collecting resin-in-leach circuit comprises both co-current and counter-current sections.
    Type: Application
    Filed: August 5, 2013
    Publication date: February 6, 2014
    Applicant: BARRICK GOLD CORPORATION
    Inventors: Yeonuk CHOI, Samir CHEFAI
  • CO-CURRENT AND COUNTER CURRENT RESIN-IN-LEACH IN GOLD LEACHING PROCESSES
    Publication number: 20120183433
    Abstract: A method and system are provided in which a gold and/or silver-collecting resin-in-leach circuit comprises both co-current and counter-current sections.
    Type: Application
    Filed: December 7, 2011
    Publication date: July 19, 2012
    Applicant: BARRICK GOLD CORPORATION
    Inventors: Yeonuk Choi, Samir Chefai