Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7393462 | Process and reagent for separating finely divided titaniferrous impurities from Kaolin | Abdul Gorken, Lino G. Magliocco, Alan S. Rothenberg, S. A. Ravishankar | 2008-07-01 |
| 6390301 | Process for removing impurities from kaolin clays | Roderick G. Ryles, Alan S. Rothenberg | 2002-05-21 |
| 5756622 | Polymeric sulfide mineral depressants | Samuel S. Wang | 1998-05-26 |
| 5533626 | Method of depressing non-sulfide silicate gangue minerals | Samuel S. Wang, James S. W. Lee, Lino G. Magliocco | 1996-07-09 |
| 5531330 | Method of depressing non-sulfide silicate gangue minerals | Samuel S. Wang | 1996-07-02 |
| 5237079 | Collectors and processes for making and using same | Samuel S. Wang | 1993-08-17 |
| 5126038 | Process for improved precious metals recovery from ores with the use of alkylhydroxamate collectors | — | 1992-06-30 |
| 5019246 | Frothing procedure using polymeric sulfide mineral depressants | Samuel S. Wang | 1991-05-28 |
| 4966938 | Allyl thiourea polymer with surface-modifying agent | Samuel S. Wang | 1990-10-30 |
| 4902765 | Allyl thiourea polymers | Samuel S. Wang | 1990-02-20 |
| 4888106 | Method of using polymeric sulfide mineral depressants | David W. Lipp | 1989-12-19 |
| 4871466 | Novel collectors and processes for making and using same | Samuel S. Wang | 1989-10-03 |
| 4866150 | Polymeric sulfide mineral depressants | David W. Lipp | 1989-09-12 |
| 4720339 | Flotation beneficiation process for non-sulfide minerals | Alan S. Rothenberg, Alexander S. Lambert | 1988-01-19 |
| 4661278 | Monothiophosphinates as acid, neutral, or mildly alkaline circuit sulfide collectors and process for using same | Samuel S. Wang | 1987-04-28 |
| 4595493 | Process for the flotation of base metal sulfide minerals in acid, neutral or mildly alkaline circuits | — | 1986-06-17 |
| 4587013 | Monothiophosphinates as acid, neutral, or mildly alkaline circuit sulfide collectors and process for using same | Samuel S. Wang | 1986-05-06 |
| 4556482 | Process for the flotation of base metal sulfide minerals in acid, neutral or mildly alkaline circuits | — | 1985-12-03 |
| 4341626 | Process for the flotation of sulfide minerals employing alkylaryl hydrocarbon compounds | David L. Dauplaise | 1982-07-27 |