B03D 2203/06
Phosphate ores
B03D2203/06 (Phosphate ores) appears on 106 US grants and 59 published applications in this corpus.
Search patents in B03D- Granted patents
- 106
- Published applications
- 59
- Assignees
- 57
- Inventors
- 220
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 8 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 3 |
| 2004 | 3 | 0 |
| 2005 | 1 | 3 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 3 |
| 2010 | 1 | 2 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 2 | 2 |
| 2014 | 1 | 1 |
| 2015 | 1 | 4 |
| 2016 | 2 | 5 |
| 2017 | 4 | 2 |
| 2018 | 2 | 5 |
| 2019 | 3 | 2 |
| 2020 | 3 | 2 |
| 2021 | 2 | 5 |
| 2022 | 0 | 7 |
| 2023 | 3 | 3 |
| 2024 | 2 | 2 |
| 2025 | 2 | 4 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ore dressing process for medium-grade and low-grade mixed collophanite19 May 2026US 12,629,697 B2Institute of Multipurpose Utilization of Mineral Resources, CAGS
- Method for froth-controlled flotation of argillaceous lepidolite ore18 Mar 2025US 12,251,713 B2Kunming University of Science and Technology
- Mixture of octene hydroformylation by-product and diesel, kerosene or C8-C20 olefins as collectors11 Mar 2025US 12,246,332 B2BASF SE
- Collector composition containing biodegradable compound and process for treating siliceous ores17 Dec 2024US 12,168,237 B2Nouryon Chemicals International B. V.
- Composition and method for use of 1-alkyl-5-oxopyrrolidine-3-carboxylic acids as collectors for phosphate and lithium flotation12 Nov 2024US 12,138,638 B2Clariant International Ltd.
- Method For Treating Phosphate Ores Containing Heavy Metals By Reverse Flotation13 Aug 2026US 2026/0234747 A1Ocp SA
- Collector composition for beneficiating carbonaceous phosphate ores19 Mar 2026US 2026/0077364 A1ArrMaz Products Inc.
- Compositions and methods for froth modification25 Dec 2025US 2025/0387792 A1Ecolab USA Inc.
- Compositions and methods for froth flotation of mineral ores13 Nov 2025US 2025/0345805 A1Ecolab USA Inc.
- Mercaptide microemulsions collectors for mineral flotation30 Oct 2025US 2025/0332599 A1Arkema Inc.
Most cited
By later US patents
- Methods of increasing flotation rate43US 6,871,743 B2Mineral and Coal Technologies, Inc. · 2005
- Process for the froth flotation of calcium phosphate-containing minerals and flotation agents therefor40US 4,358,368 ABerol Kemi AB · 1982
- Low molecular weight copolymers and terpolymers as depressants in mineral ore flotation28US 4,360,425 AAmerican Cyanamid Company · 1982
- Method of increasing flotation rate25US 6,799,682 B12004
- Phosphate flotation process20US 4,172,029 AThe Dow Chemical Company · 1979