B03D 2201/04
Frothers
B03D2201/04 (Frothers) appears on 158 US grants and 87 published applications in this corpus.
Search patents in B03D- Granted patents
- 158
- Published applications
- 87
- Assignees
- 104
- Inventors
- 311
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 8 | 0 |
| 1984 | 8 | 0 |
| 1985 | 8 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 6 | 0 |
| 1989 | 8 | 0 |
| 1990 | 7 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 2 | 3 |
| 2005 | 0 | 2 |
| 2006 | 3 | 3 |
| 2007 | 1 | 2 |
| 2008 | 0 | 3 |
| 2009 | 3 | 1 |
| 2010 | 1 | 4 |
| 2011 | 0 | 3 |
| 2012 | 5 | 4 |
| 2013 | 5 | 2 |
| 2014 | 1 | 6 |
| 2015 | 3 | 5 |
| 2016 | 3 | 3 |
| 2017 | 3 | 4 |
| 2018 | 5 | 5 |
| 2019 | 6 | 3 |
| 2020 | 3 | 3 |
| 2021 | 3 | 7 |
| 2022 | 1 | 4 |
| 2023 | 4 | 8 |
| 2024 | 3 | 4 |
| 2025 | 3 | 3 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Enhanced foam fractionation of oil phase from aqueous/oil mixed phase via increased viscoelasticity8 Sep 2026US 12,729,140 B2Ecolab USA Inc.
- Frothing agent for flotation of ores9 Jun 2026US 12,649,159 B2BASF SE
- Frothers for minerals recovery and methods of making and using same19 May 2026US 12,629,698 B2Syensqo SA
- Frothers for minerals recovery27 Jan 2026US 12,533,681 B2Syensqo SA
- Si removal from aqueous streams of minerals processing plants20 Jan 2026US 12,528,718 B2Metso Finland Oy
- New frothers for minerals recovery and methods of making and using same17 Sep 2026US 2026/0273546 A1Syensqo SA
- Flotation method for recovery of copper oxide ore with full-size fractions16 Jul 2026US 2026/0199908 A1Kunming University of Science and Technology
- Method for full-particle size flotation of slime-containing lepidolite ore25 Jun 2026US 2026/0175235 A1Kunming University of Science and Technology
- Solid-solid separation of carbon from a hardly soluble alkaline earth sulfate2 Apr 2026US 2026/0094889 A1BASF SE
- Enhanced foam removal of total suspended solids and multiply charged cations from aqueous or aqueous/oil mixed phase via increased viscoelasticity1 Jan 2026US 2026/0001783 A1Ecolab USA Inc.
Most cited
By later US patents
- Low temperature bitumen recovery process113US 4,946,597 AEsso Resources Canada Limited · 1990
- Promotors for froth floatation of coal37US 4,678,562 ASherex Chemical Company, Inc. · 1987
- Froth promotor for flotation of coal36US 4,308,133 AThe Dow Chemical Company · 1981
- Coal flotation process34US 5,443,158 AFording Coal Limited · 1995
- Polyorganosiloxane collectors in the beneficiation of fine coal by froth flotation25US 4,532,032 ADow Corning Corporation · 1985