RB

Robert E. Brewer

PD Phelps Dodge: 18 patents #2 of 40Top 5%
FR Freeport-Mcmoran: 4 patents #15 of 72Top 25%
Overall (All Time): #186,005 of 4,157,543Top 5%
23
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8012318 Process for multiple stage direct electrowinning of copper John O. Marsden, Susan R Brewer, Joanna M. Robertson, David R. Baughman, Philip Thompson +2 more 2011-09-06
7736488 Process for recovery of copper from copper-bearing material using pressure leaching, direct electrowinning and solvent/solution extraction John O. Marsden, Susan R Brewer, Joanna M. Robertson, David R. Baughman, Philip Thompson +2 more 2010-06-15
7722756 Process for multiple stage direct electrowinning of copper John O. Marsden, Joanna M. Robertson, David R. Baughman, Philip Thompson, Wayne W. Hazen +1 more 2010-05-25
7666371 Method for recovering metal values from metal-containing materials using high temperature pressure leaching John O. Marsden, Joanna M. Robertson, Wayne W. Hazen, Philip Thompson, David R. Baughman 2010-02-23
7517384 Method for improving metals recovery using high temperature pressure leaching John O. Marsden, Joanna M. Robertson, David R. Baughman, Philip Thompson, Wayne W. Hazen +1 more 2009-04-14
7485216 Process for recovery of copper from copper-bearing material using pressure leaching, direct electrowinning and solvent/solution extraction John O. Marsden, Joanna M. Robertson, David R. Baughman, Philip Thompson, Wayne W. Hazen +1 more 2009-02-03
7476308 Process for multiple stage direct electrowinning of copper John O. Marsden, Joanna M. Robertson, David R. Baughman, Phillip Thompson, Wayne W. Hazen +1 more 2009-01-13
7473413 Method for recovering metal values from metal-containing materials using high temperature pressure leaching John O. Marsden, Joanna M. Robertson, Wayne W. Hazen, Philip Thompson, David R. Baughman 2009-01-06
7462272 Process for multiple stage direct electrowinning of copper John O. Marsden, Joanna M. Robertson, David R. Baughman, Philip Thompson, Wayne W. Hazen +1 more 2008-12-09
7341700 Method for recovery of metals from metal-containing materials using medium temperature pressure leaching John O. Marsden, Joanna M. Robertson, Wayne W. Hazen, Philip Thompson, David R. Baughman +1 more 2008-03-11
7125436 Method for improving metals recovery using high temperature pressure leaching John O. Marsden, Joanna M. Robertson, David R. Baughman, Philip Thompson, Wayne W. Hazen +1 more 2006-10-24
7041152 Method for processing elemental sulfur-bearing materials using high temperature pressure leaching John O. Marsden, Joanna M. Robertson, Wayne W. Hazen, Philip Thompson, David R. Baughman 2006-05-09
6972107 System for direct electrowinning of copper John O. Marsden, Joanna M. Robertson, David R. Baughman, Philip Thompson, Wayne W. Hazen +1 more 2005-12-06
6893482 Method for improving metals recovery using high temperature pressure leaching John O. Marsden, Joanna M. Robertson, David R. Baughman, Philip Thompson, Wayne W. Hazen +1 more 2005-05-17
6890371 Method for processing elemental sulfur-bearing materials using high temperature pressure leaching John O. Marsden, Joanna M. Robertson, Wayne W. Hazen, Philip Thompson, David R. Baughman 2005-05-10
6680034 Method for recovering metal values from metal-containing materials using high temperature pressure leaching John O. Marsden, Joanna M. Robertson, Wayne W. Hazen, Philip Thompson, David R. Baughman 2004-01-20
6676909 Method for recovery of metals from metal-containing materials using medium temperature pressure leaching John O. Marsden, Joanna M. Robertson, Wayne W. Hazen, Philip Thompson, David R. Baughman +1 more 2004-01-13
6663689 Process for direct electrowinning of copper John O. Marsden, Joanna M. Robertson, David R. Baughman, Philip Thompson, Wayne W. Hazen +1 more 2003-12-16
6626979 Method for improving metals recovery using high temperature pressure leaching John O. Marsden, Joanna M. Robertson, David R. Baughman, Philip Thompson, Wayne W. Hazen +1 more 2003-09-30
6497745 Method for processing elemental sulfur-bearing materials using high temperature pressure leaching John O. Marsden, Joanna M. Robertson, Wayne W. Hazen, Philip Thompson, David R. Baughman 2002-12-24
6451088 Method for improving metals recovery using high temperature leaching John O. Marsden, Joanna M. Robertson, David R. Baughman, Philip Thompson, Wayne W. Hazen +1 more 2002-09-17
6451089 Process for direct electrowinning of copper John O. Marsden, Joanna M. Robertson, David R. Baughman, Philip Thompson, Wayne W. Hazen +1 more 2002-09-17
5071477 Process for recovery of gold from refractory ores Kenneth G. Thomas, Herman Pieterse, Kevin S. Fraser 1991-12-10