Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8012318 | Process for multiple stage direct electrowinning of copper | John O. Marsden, Robert E. 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, Robert E. Brewer, Joanna M. Robertson, David R. Baughman, Philip Thompson +2 more | 2010-06-15 |