Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8016912 | Process for recovering platinum group metals using reductants | Nathan Stubina, Jacques McMullen | 2011-09-13 |
| 5795466 | Process for improved separation of sulphide minerals or middlings associated with pyrrhotite | Sadan Kelebek, Peter F. Wells, Michael Burrows, Daniel Suarez | 1998-08-18 |
| 5411148 | Selective flotation process for separation of sulphide minerals | Sadan Kelebek, Peter F. Wells | 1995-05-02 |
| 4233273 | Selective extraction of iron and aluminum from acidic solutions | Gustavo A. Meyer, Gordon R. Wicker | 1980-11-11 |
| 4214901 | Hydrometallurgical refining of nickeliferous sulfides | Eugene J. Michal, H. Jan Roorda | 1980-07-29 |
| 4193969 | Selective nickel and cobalt extraction from aqueous acidic solutions | Gustavo A. Meyer | 1980-03-18 |