Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8012318 | Process for multiple stage direct electrowinning of copper | John O. Marsden, Robert E. Brewer, Susan R Brewer, Joanna M. Robertson, David R. Baughman +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, Robert E. Brewer, Susan R Brewer, Joanna M. Robertson, David R. Baughman +2 more | 2010-06-15 |
| 7722756 | Process for multiple stage direct electrowinning of copper | John O. Marsden, Joanna M. Robertson, Robert E. Brewer, David R. Baughman, Philip Thompson +1 more | 2010-05-25 |
| 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, Robert E. Brewer, Joanna M. Robertson, David R. Baughman, Phillip Thompson +1 more | 2009-01-13 |
| 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 |
| 6972107 | System for direct electrowinning of copper | John O. Marsden, Robert E. Brewer, Joanna M. Robertson, David R. Baughman, Philip Thompson +1 more | 2005-12-06 |
| 6663689 | Process for direct electrowinning of copper | John O. Marsden, Robert E. Brewer, Joanna M. Robertson, David R. Baughman, Philip Thompson +1 more | 2003-12-16 |
| 6451089 | Process for direct electrowinning of copper | John O. Marsden, Robert E. Brewer, Joanna M. Robertson, David R. Baughman, Philip Thompson +1 more | 2002-09-17 |