Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6632264 | Gold recovery from thiosulfate leaching | Hongguang Zhang | 2003-10-14 |
| 6537440 | Processing copper sulphide ores | Geoffrey A. Richmond | 2003-03-25 |
| 6503293 | Process for the extraction of copper | Paul Murrow Dempsey | 2003-01-07 |