Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857104 | Process for reduction smelting of materials containing base metals | Charles E. O'Neill | 1989-08-15 |
| 4802916 | Copper smelting combined with slag cleaning | Carlos M. Diaz, Charles E. O'Neill, James A. Bell, Lloyd Timberg | 1989-02-07 |
| 4802917 | Copper smelting with calcareous flux | Carlos M. Diaz, Charles E. O'Neill | 1989-02-07 |
| 4615729 | Flash smelting process | Carlos M. Diaz | 1986-10-07 |
| 4415356 | Process for autogenous oxygen smelting of sulfide materials containing base metals | Malcolm Charles Evert Bell | 1983-11-15 |
| 4358430 | Process for treatment of selenium-bearing materials | Ramamritham Sridhar, Malcolm Charles Evert Bell | 1982-11-09 |
| 4304644 | Autoclave oxidation leaching of sulfide materials containing copper, nickel and/or cobalt | Norman C. Nissen, Kohur N. Subramanian | 1981-12-08 |