B03D 2201/02
Collectors
B03D2201/02 (Collectors) appears on 556 US grants and 284 published applications in this corpus.
Search patents in B03D- Granted patents
- 556
- Published applications
- 284
- Assignees
- 270
- Inventors
- 1,049
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 9 | 0 |
| 1978 | 14 | 0 |
| 1979 | 17 | 0 |
| 1980 | 19 | 0 |
| 1981 | 25 | 0 |
| 1982 | 21 | 0 |
| 1983 | 15 | 0 |
| 1984 | 26 | 0 |
| 1985 | 28 | 0 |
| 1986 | 19 | 0 |
| 1987 | 22 | 0 |
| 1988 | 22 | 0 |
| 1989 | 23 | 0 |
| 1990 | 17 | 0 |
| 1991 | 16 | 0 |
| 1992 | 18 | 0 |
| 1993 | 9 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 8 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 7 | 0 |
| 2001 | 0 | 0 |
| 2002 | 4 | 1 |
| 2003 | 1 | 3 |
| 2004 | 5 | 6 |
| 2005 | 2 | 7 |
| 2006 | 8 | 5 |
| 2007 | 4 | 5 |
| 2008 | 0 | 4 |
| 2009 | 3 | 10 |
| 2010 | 3 | 14 |
| 2011 | 3 | 4 |
| 2012 | 9 | 9 |
| 2013 | 11 | 11 |
| 2014 | 8 | 11 |
| 2015 | 9 | 14 |
| 2016 | 15 | 15 |
| 2017 | 10 | 14 |
| 2018 | 10 | 14 |
| 2019 | 13 | 16 |
| 2020 | 12 | 17 |
| 2021 | 10 | 19 |
| 2022 | 7 | 18 |
| 2023 | 15 | 16 |
| 2024 | 11 | 20 |
| 2025 | 12 | 10 |
| 2026 | 6 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Mining collectors6 Oct 2026US 12,752,286 B2
- Mining collectors15 Sep 2026US 12,734,529 B1
- Frothers for minerals recovery and methods of making and using same19 May 2026US 12,629,698 B2Syensqo SA
- Compounds, methods, and systems for benefication of rare earth elements by flotation and gravity concentration10 Mar 2026US 12,569,861 B2Colorado School of Mines
- Si removal from aqueous streams of minerals processing plants20 Jan 2026US 12,528,718 B2Metso Finland Oy
- Mining chemical collector compositions and processes for recovering metal from ore1 Oct 2026US 2026/0295598 A1Chevron Phillips Chemical Company LP
- New frothers for minerals recovery and methods of making and using same17 Sep 2026US 2026/0273546 A1Syensqo SA
- Compositions for lithium beneficiation and methods of use20 Aug 2026US 2026/0241392 A1Ecolab USA Inc.
- Method For Treating Phosphate Ores Containing Heavy Metals By Reverse Flotation13 Aug 2026US 2026/0234747 A1Ocp SA
- Sulfur compositions for froth flotation of ores30 Jul 2026US 2026/0216736 A1Arkema Inc.
Most cited
By later US patents
- Low temperature bitumen recovery process113US 4,946,597 AEsso Resources Canada Limited · 1990
- Ambient froth flotation process for the recovery of bitumen from tar sand87US 4,425,227 AGNC Energy Corporation · 1984
- Promoters for froth flotation of coal56US 4,589,980 ASherex Chemical Company, Inc. · 1986
- Methods of increasing flotation rate43US 6,871,743 B2Mineral and Coal Technologies, Inc. · 2005
- Collector compositions for the froth flotation of mineral values41US 4,684,459 AThe Dow Chemical Company · 1987