Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5236676 | Pressure chlorination of refractory gold ores | Roy Anthony Pickren | 1993-08-17 |
| 5147617 | Process for recovery of gold from gold ores using a complexing pretreatment and sulfurous acid leaching | Tadeusz K. Wiewiorowski | 1992-09-15 |
| 5147618 | Process for recovery of gold from refractory gold ores using sulfurous acid as the leaching agent | Tadeusz K. Wiewiorowski | 1992-09-15 |
| 4734270 | Sulfide treatment to inhibit mercury adsorption onto activated carbon in carbon-in-pulp gold recovery circuits | Delbert A. Lipps | 1988-03-29 |
| 4726939 | Process for the removal of mercury from precious metal-cyanide liquors | — | 1988-02-23 |
| 4605537 | Sulfide as a hypochlorite kill agent | — | 1986-08-12 |