B03D 2201/06
Depressants
B03D2201/06 (Depressants) appears on 136 US grants and 66 published applications in this corpus.
Search patents in B03D- Granted patents
- 136
- Published applications
- 66
- Assignees
- 84
- Inventors
- 280
- Latest grant
- 10 Oct 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 8 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 7 | 0 |
| 1989 | 14 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 3 |
| 2007 | 1 | 4 |
| 2008 | 1 | 2 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 2 | 3 |
| 2012 | 4 | 0 |
| 2013 | 0 | 1 |
| 2014 | 4 | 6 |
| 2015 | 1 | 4 |
| 2016 | 4 | 4 |
| 2017 | 5 | 4 |
| 2018 | 4 | 7 |
| 2019 | 4 | 5 |
| 2020 | 8 | 3 |
| 2021 | 2 | 2 |
| 2022 | 1 | 2 |
| 2023 | 3 | 2 |
| 2024 | 0 | 4 |
| 2025 | 0 | 3 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Slow-release inhibitor for high-magnesium sulfide mineral flotation and application thereof10 Oct 2023US 11,779,935 B2Central South University
- Flotation reagents from acidic olive oil2 May 2023US 11,638,923 B1King Saud University
- Cationic polymer selective depressants and use thereof in mineral ore purification methods28 Mar 2023US 11,612,898 B2Kemira Oyj
- Peptide binding to arsenic-containing mineral and use thereof22 Feb 2022US 11,254,707 B2JX Nippon Mining & Metals Corporation
- Process for the depression of iron sulphides and other disposable elements in the concentration of mineral by flotation and electrochemical reactor23 Nov 2021US 11,180,825 B2Lain Technologies Ltd
- Combined depressant for sphalerite and its application28 May 2026US 2026/0145180 A1Kunming University of Science and Technology
- Ammoniated polycarbamide separation aids for mineral flotation12 Mar 2026US 2026/0070068 A1Hexion Inc.
- Method of flotation separation for copper-sulfur polymetallic ore22 Jan 2026US 2026/0021492 A1Jiangxi Copper Company Limited
- Compositions and methods for froth modification25 Dec 2025US 2025/0387792 A1Ecolab USA Inc.
- Vanadium recovery4 Sep 2025US 2025/0276330 A1Australian Vanadium Limited
Most cited
By later US patents
- Crosslinked starches as depressants in mineral ore flotation31US 4,339,331 AAmerican Cyanamid Company · 1982
- Low molecular weight copolymers and terpolymers as depressants in mineral ore flotation28US 4,360,425 AAmerican Cyanamid Company · 1982
- Flotation beneficiation process for non-sulfide minerals25US 4,720,339 AAmerican Cyanamid Company · 1988
- Depressant for flotation separation of polymetallic sulphidic ores22US 5,049,612 AFalconbridge Limited · 1991
- Materials and processes for flotation of mineral substances20US 4,139,455 AAllied Colloids Limited · 1979