Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12378634 | Systems and methods for improved raffinate injection | Sarah Lyons, Casey J. Clayton, Richard Melecio Sanchez, Raquel Crossman, Luciano Kiniti Issoe +6 more | 2025-08-05 |
| 10767242 | Methods and systems for leaching a metal-bearing ore using a bio-augmentation process | Christine Green, Gabriel Elias Bowman | 2020-09-08 |
| 10662502 | Systems and methods for improved metal recovery using ammonia leaching | Thomas R. Bolles, Dennis D. Gertenbach | 2020-05-26 |
| 10370738 | Methods and systems for leaching a metal-bearing ore | Christine Green, Gabriel Elias Bowman | 2019-08-06 |
| 10246789 | Systems and methods for copper recovery via roasting and leaching | Thomas R. Bolles, Wayne W. Hazen, Lawrence D. May, Jay C. Smith, David R. Baughman | 2019-04-02 |
| 10006133 | Systems and methods for improved metal recovery using ammonia leaching | Thomas R. Bolles, Dennis D. Gertenbach | 2018-06-26 |
| 9340849 | Systems and methods for metal recovery | Thomas R. Bolles, Wayne W. Hazen, Lawrence D. May, Jay C. Smith, David R. Baughman | 2016-05-17 |
| 9187803 | Systems and methods for improved metal recovery using ammonia leaching | Thomas R. Bolles, Dennis D. Gertenbach | 2015-11-17 |
| 9175366 | Systems and methods for improved metal recovery using ammonia leaching | Thomas R. Bolles, Dennis D. Gertenbach | 2015-11-03 |
| 8920773 | Systems and methods for metal recovery | Thomas R. Bolles, Wayne W. Hazen, Lawrence D. May, Jay C. Smith, David R. Baughman | 2014-12-30 |
| 8012318 | Process for multiple stage direct electrowinning of copper | John O. Marsden, Robert E. Brewer, Susan R Brewer, 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, Susan R Brewer, David R. Baughman, Philip Thompson +2 more | 2010-06-15 |
| 7722756 | Process for multiple stage direct electrowinning of copper | John O. Marsden, Robert E. Brewer, 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, Robert E. Brewer, 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, Robert E. Brewer, 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, David R. Baughman, Philip Thompson, Wayne W. Hazen, Christel M. A. Bemelmans +1 more | 2009-02-03 |
| 7476308 | Process for multiple stage direct electrowinning of copper | John O. Marsden, Robert E. Brewer, 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, Robert E. Brewer, Wayne W. Hazen, Philip Thompson, David R. Baughman | 2009-01-06 |
| 7462272 | Process for multiple stage direct electrowinning of copper | John O. Marsden, David R. Baughman, Philip Thompson, Wayne W. Hazen, Christel M. A. Bemelmans +1 more | 2008-12-09 |
| 7341700 | Method for recovery of metals from metal-containing materials using medium temperature pressure leaching | John O. Marsden, Robert E. Brewer, 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, Robert E. Brewer, 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, Robert E. Brewer, Wayne W. Hazen, Philip Thompson, David R. Baughman | 2006-05-09 |
| 6972107 | System for direct electrowinning of copper | John O. Marsden, Robert E. Brewer, 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, Robert E. Brewer, 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, Robert E. Brewer, Wayne W. Hazen, Philip Thompson, David R. Baughman | 2005-05-10 |