Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6663689 | Process for direct electrowinning of copper | John O. Marsden, Robert E. Brewer, 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, Robert E. Brewer, David R. Baughman, Philip Thompson, Wayne W. Hazen +1 more | 2003-09-30 |