Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6890371 | Method for processing elemental sulfur-bearing materials using high temperature pressure leaching | Robert E. Brewer, 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 | Robert E. Brewer, 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 | Robert E. Brewer, Joanna M. Robertson, Wayne W. Hazen, Philip Thompson, David R. Baughman +1 more | 2004-01-13 |
| 6663689 | Process for direct electrowinning of copper | Robert E. Brewer, 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 | Robert E. Brewer, 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 | Robert E. Brewer, Joanna M. Robertson, Wayne W. Hazen, Philip Thompson, David R. Baughman | 2002-12-24 |
| 6451088 | Method for improving metals recovery using high temperature leaching | Robert E. Brewer, Joanna M. Robertson, David R. Baughman, Philip Thompson, Wayne W. Hazen +1 more | 2002-09-17 |
| 6451089 | Process for direct electrowinning of copper | Robert E. Brewer, Joanna M. Robertson, David R. Baughman, Philip Thompson, Wayne W. Hazen +1 more | 2002-09-17 |