Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11155894 | Method for reducing arsenic content in arsenic-bearing gold material | Roman Berezowsky, Paul Skayman | 2021-10-26 |
| 8821613 | Method for thiosulfate leaching of precious metal-containing materials | Christopher Andrew Fleming, Paul George West-Sells, Ralph Peter Hackl | 2014-09-02 |
| 8597399 | Method for thiosulfate leaching of precious metal-containing materials | Christopher Andrew Fleming, Paul George West-Sells, Ralph Peter Hackl | 2013-12-03 |
| 8097227 | Method for thiosulfate leaching of precious metal-containing materials | Ralph Peter Hackl, Paul George West-Sells | 2012-01-17 |
| 8061888 | Autoclave with underflow dividers | James A. King | 2011-11-22 |
| 8029751 | Reduction of lime consumption when treating refractory gold ores or concentrates | James A. King, Christopher Andrew Fleming, Cesare G. Ferron | 2011-10-04 |
| 7722840 | Method for thiosulfate leaching of precious metal-containing materials | Ralph Peter Hackl, Paul George West-Sells | 2010-05-25 |
| 7704298 | Method for thiosulfate leaching of precious metal-containing materials | Christopher Andrew Fleming, Paul George West-Sells, Ralph Peter Hackl | 2010-04-27 |
| 7604783 | Reduction of lime consumption when treating refractor gold ores or concentrates | James A. King, Christopher Andrew Fleming, Cesare G. Ferron | 2009-10-20 |
| 7559974 | Method for thiosulfate leaching of precious metal-containing materials | Christopher Andrew Fleming, Paul George West-Sells, Ralph Peter Hackl | 2009-07-14 |
| 7544232 | Method for thiosulfate leaching of precious metal-containing materials | Ralph Peter Hackl, Paul George West-Sells | 2009-06-09 |
| 7066983 | Method for thiosulfate leaching of precious metal-containing materials | Christopher Andrew Fleming, Paul George West-Sells, Ralph Peter Hackl | 2006-06-27 |
| 6660059 | Method for thiosulfate leaching of precious metal-containing materials | Christopher Andrew Fleming, Paul George West-Sells, Ralph Peter Hackl | 2003-12-09 |
| 6368381 | Autoclave using agitator and sparge tube to provide high oxygen transfer rate to metal-containing solutions | James A. King | 2002-04-09 |
| 5622615 | Process for electrowinning of copper matte | Sharon K. Young, David Dreisinger | 1997-04-22 |