Patents by Inventor Susan R. Brewer, legal representative

Susan R. Brewer, legal representative 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 multiple stage direct electrowinning of copper
    Patent number: 7722756
    Abstract: A system and process for recovering copper from a copper-containing ore, concentrate, or other copper-bearing material to produce high quality cathode copper from a leach solution without the use of copper solvent/solution extraction techniques or apparatus. A process for recovering copper from a copper-containing ore generally includes the steps of providing a feed stream containing comminuted copper-containing ore, concentrate, or other copper-bearing material, leaching the feed stream to yield a copper-containing solution, conditioning the copper-containing solution through one or more physical or chemical conditioning steps, and electrowinning copper directly from the copper-containing solution in multiple electrowinning stages, without subjecting the copper-containing solution to solvent/solution extraction prior to electrowinning.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: May 25, 2010
    Assignee: Freeport-McMoran Corporation
    Inventors: John O Marsden, Joanna M Robertson, Robert E Brewer, Susan R. Brewer, legal representative, David R Baughman, Philip Thompson, Wayne W Hazen, Christel M. A. Bemelmans
  • Process for recovery of copper from copper-bearing material using pressure leaching, direct electrowinning and solvent/solution extraction
    Patent number: 7485216
    Abstract: The present invention relates generally to a process for recovering copper and/or other metal values from a metal-bearing ore, concentrate, or other metal-bearing material using pressure leaching and direct electrowinning. More particularly, the present invention relates to a substantially acid-autogenous process for recovering copper from chalcopyrite-containing ore using pressure leaching and direct electrowinning in combination with a leaching, solvent/solution extraction and electrowinning operation.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: February 3, 2009
    Assignee: Phelps Dodge Corporation
    Inventors: John O. Marsden, Susan R. Brewer, legal representative, Joanna M. Robertson, David R. Baughman, Philip Thompson, Wayne W. Hazen, Christel M. A. Bemelmans, Robert E. Brewer
  • Process for multiple stage direct electrowinning of copper
    Patent number: 7462272
    Abstract: A system and process for recovering copper from a copper-containing ore, concentrate, or other copper-bearing material to produce high quality cathode copper from a leach solution without the use of copper solvent/solution extraction techniques or apparatus. A process for recovering copper from a copper-containing ore generally includes the steps of providing a feed stream containing comminuted copper-containing ore, concentrate, or other copper-bearing material, leaching the feed stream to yield a copper-containing solution, conditioning the copper-containing solution through one or more physical or chemical conditioning steps, and electrowinning copper directly from the copper-containing solution in multiple electrowinning stages, without subjecting the copper-containing solution to solvent/solution extraction prior to electrowinning.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: December 9, 2008
    Assignee: Phelps Dodge Corporation
    Inventors: John O. Marsden, Susan R. Brewer, legal representative, Joanna M. Robertson, David R. Baughman, Philip Thompson, Wayne W. Hazen, Christel M. A. Bemelmans, Robert E. Brewer