B03D 2203/08
Coal ores, fly ash or soot
B03D2203/08 (Coal ores, fly ash or soot) appears on 124 US grants and 66 published applications in this corpus.
Search patents in B03D- Granted patents
- 124
- Published applications
- 66
- Assignees
- 67
- Inventors
- 206
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 9 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 6 | 0 |
| 1985 | 8 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 3 |
| 2008 | 0 | 3 |
| 2009 | 2 | 3 |
| 2010 | 1 | 4 |
| 2011 | 1 | 2 |
| 2012 | 5 | 5 |
| 2013 | 2 | 1 |
| 2014 | 3 | 4 |
| 2015 | 5 | 4 |
| 2016 | 4 | 3 |
| 2017 | 3 | 1 |
| 2018 | 1 | 3 |
| 2019 | 3 | 1 |
| 2020 | 2 | 5 |
| 2021 | 1 | 5 |
| 2022 | 4 | 6 |
| 2023 | 1 | 5 |
| 2024 | 2 | 3 |
| 2025 | 2 | 1 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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
- Pre-flotation high efficiency slurry conditioning device for wide-particle-grade flotation13 Jan 2026US 12,521,732 B2China University of Mining and Technology
- Mixture of octene hydroformylation by-product and diesel, kerosene or C8-C20 olefins as collectors11 Mar 2025US 12,246,332 B2BASF SE
- Flotation separation of fine coal particles from ash-forming particles11 Feb 2025US 12,220,711 B2Omnis Mineral Technologies, LLC
- Fuel oil / particulate material slurry compositions and processes31 Jul 2025US 2025/0243420 A1Arq IP Limited
- Compositions and methods for separating metals and/or minerals from a source material using froth flotation7 Nov 2024US 2024/0367179 A1Locus Solutions Ipco, LLC
- Rapid measurement of coal oxidation8 Aug 2024US 2024/0264074 A1The University of Queensland
- Improved flotation and solid-liquid separation of tailings20 Jun 2024US 2024/0198359 A1Extrakt Process Solutions, LLC
- New frothers for minerals recovery4 May 2023US 2023/0137245 A1Solvay SA
Most cited
By later US patents
- 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
- Composition comprising a pulverized purified substance, water and a dispersing agent, and a method for preparing the composition42US 4,217,109 AAB Scaniainventor · 1980
- 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