Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11187113 | Method and apparatus for electrical power generation from natural gas with zero carbon emmision | — | 2021-11-30 |
| 10662502 | Systems and methods for improved metal recovery using ammonia leaching | Joanna M. Robertson, Dennis D. Gertenbach | 2020-05-26 |
| 10246789 | Systems and methods for copper recovery via roasting and leaching | Joanna M. Robertson, 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 | Joanna M. Robertson, Dennis D. Gertenbach | 2018-06-26 |
| 9340849 | Systems and methods for metal recovery | Joanna M. Robertson, 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 | Joanna M. Robertson, Dennis D. Gertenbach | 2015-11-17 |
| 9175366 | Systems and methods for improved metal recovery using ammonia leaching | Joanna M. Robertson, Dennis D. Gertenbach | 2015-11-03 |
| 8920773 | Systems and methods for metal recovery | Joanna M. Robertson, Wayne W. Hazen, Lawrence D. May, Jay C. Smith, David R. Baughman | 2014-12-30 |
| 4526763 | Process for the production of alumina | Robert W. Bartlett | 1985-07-02 |