Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10590512 | Method for ammoniacal leaching of copper from oxidised copper ores | Garry Mervyn Johnston, Nicholas James Welham | 2020-03-17 |
| 9771631 | Method of oxidative leaching of sulfide ores and/or concentrates | Nicholas James Welham, Garry Mervyn Johnston | 2017-09-26 |
| 9057119 | Method of oxidative leaching of molybdenum—rhenium sulfide ores and/or concentrates | Garry Mervyn Johnston, Nicholas James Welham | 2015-06-16 |
| 9011574 | Method for leaching of copper and molybdenum | Nicholas James Welham, Garry Mervyn Johnston | 2015-04-21 |
| 8871001 | Method for leaching zinc from a zinc ore | Garry Mervyn Johnston, Nicholas James Welham | 2014-10-28 |
| 8486355 | Method for leaching cobalt from oxidised cobalt ores | Garry Mervyn Johnston, Nicholas James Welham | 2013-07-16 |
| 8388729 | Method for ammoniacal leaching | Nicholas James Welham, Garry Mervyn Johnston | 2013-03-05 |
| 8323596 | Method for extracting zinc from aqueous ammoniacal solutions | Garry Mervyn Johnston, Nicholas James Welham | 2012-12-04 |