Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6569224 | Hydrometallurgical process for the recovery of nickel and cobalt values from a sulfidic flotation concentrate | Eberhard Krause, Bruce Love, Avinash Singhal | 2003-05-27 |
| 6428604 | Hydrometallurgical process for the recovery of nickel and cobalt values from a sulfidic flotation concentrate | Eberhard Krause, Bruce Love, Avinash Singhal | 2002-08-06 |
| 5993514 | Process for upgrading copper sulphide residues containing nickel and iron | Manher M. Makwana, John Stiksma | 1999-11-30 |
| 5468281 | Process for the separation of cobalt from nickel | — | 1995-11-21 |
| 5344479 | Upgrading copper sulphide residues containing nickel and arsenic | Rein Raudsepp | 1994-09-06 |
| 4571262 | Recovery of platinum group metals from nickel-copper-iron matte | Russell P. Kofluk, Donald R. Weir | 1986-02-18 |
| 4374808 | Removal of selenium from acidic copper/nickel solutions | Donald R. Weir, Zdenek Hofirek | 1983-02-22 |
| 4338168 | Hydrometallurgical treatment of copper-bearing hematite residue | Robert W. Stanley, Serge Monette | 1982-07-06 |
| 4330508 | Removal of selenium (IV) and (VI) from acidic copper sulphate solutions | Donald R. Weir, Hugh C. Scheie | 1982-05-18 |