Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7416711 | Atmospheric pressure leach process for lateritic nickel ore | Houyuan Liu, James D. Gillaspie, Coralie Lewis, Steven Barnett | 2008-08-26 |
| 6680035 | Atmospheric leach process for the recovery of nickel and cobalt from limonite and saprolite ores | J. Carlos Arroyo | 2004-01-20 |
| 6379636 | Method for leaching nickeliferous laterite ores | J. Carlos Arroyo, James D. Gillaspie, Erik M. Weenink | 2002-04-30 |
| 6350420 | Resin-in-pulp method for recovery of nickel and cobalt | Willem P. C. Duyvesteyn, Erik M. Weenink | 2002-02-26 |
| 6261527 | Atmospheric leach process for the recovery of nickel and cobalt from limonite and saprolite ores | J. Carlos Arroyo | 2001-07-17 |
| 4915919 | Recovery of germanium from aqueous solutions by solvent extraction | Daniel A. D. Boateng, Victor Saleh | 1990-04-10 |