Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8221710 | Recovering metals from complex metal sulfides | Roman Berezowsky | 2012-07-17 |
| 7846404 | Process for separating and recovering base metals from used hydroprocessing catalyst | Rahul Shankar Bhaduri, Roman Berezowsky | 2010-12-07 |
| 7837960 | Process for separating and recovering base metals from used hydroprocessing catalyst | Rahul Shankar Bhaduri, Roman Berezowsky | 2010-11-23 |
| 6656247 | Selective precipitation of manganese from magnesium-containing solutions | Roman M. Genik-Sas-Berezowsky | 2003-12-02 |
| 5993514 | Process for upgrading copper sulphide residues containing nickel and iron | Manher M. Makwana, Derek G. E. Kerfoot | 1999-11-30 |
| 5711929 | Purification of elemental sulphur | Michael E. Chalkley, Michael J. Collins, Manher M. Makwana, Ian M. Masters | 1998-01-27 |