Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861565 | Method of separately recovering metal values of petroleum refining catalyst | Robert Fox, William P. Lorenz | 1989-08-29 |
| 4379037 | Removal of manganese and chloride ions from aqueous acidic zinc sulphate solutions | Gerald L. Bolton, Nicolaus Zubryckyj | 1983-04-05 |
| 4290866 | Removal of manganese ions from zinc and manganese containing solutions | Gerald L. Bolton, Nicolaus Zubryckyj | 1981-09-22 |
| 4272490 | Hydrometallurgical process for the treatment of ores | Ian M. Masters | 1981-06-09 |
| 4193970 | Process for the precipitation of iron as jarosite | Godefridus M. Swinkels, Charles R. Kirby, Roman M. Genik-Sas-Berezowsky | 1980-03-18 |