B03D 1/00
Flotation
Official title: Flotation (conditioning for flotation, general arrangement of plan B03B)
B03D1/00 (Flotation) appears on 2,246 US grants and 1,329 published applications in this corpus.
Search patents in B03D- Granted patents
- 2,246
- Published applications
- 1,329
- Assignees
- 1,124
- Inventors
- 3,749
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 39 | 0 |
| 1977 | 32 | 0 |
| 1978 | 45 | 0 |
| 1979 | 40 | 0 |
| 1980 | 73 | 0 |
| 1981 | 78 | 0 |
| 1982 | 53 | 0 |
| 1983 | 47 | 0 |
| 1984 | 64 | 0 |
| 1985 | 75 | 0 |
| 1986 | 61 | 0 |
| 1987 | 51 | 0 |
| 1988 | 53 | 0 |
| 1989 | 61 | 0 |
| 1990 | 50 | 0 |
| 1991 | 55 | 0 |
| 1992 | 58 | 0 |
| 1993 | 42 | 0 |
| 1994 | 38 | 0 |
| 1995 | 33 | 0 |
| 1996 | 55 | 0 |
| 1997 | 35 | 0 |
| 1998 | 42 | 0 |
| 1999 | 38 | 0 |
| 2000 | 47 | 0 |
| 2001 | 19 | 5 |
| 2002 | 23 | 13 |
| 2003 | 20 | 39 |
| 2004 | 35 | 50 |
| 2005 | 22 | 33 |
| 2006 | 22 | 26 |
| 2007 | 18 | 36 |
| 2008 | 16 | 47 |
| 2009 | 22 | 46 |
| 2010 | 23 | 59 |
| 2011 | 30 | 54 |
| 2012 | 44 | 52 |
| 2013 | 48 | 69 |
| 2014 | 46 | 66 |
| 2015 | 49 | 66 |
| 2016 | 55 | 67 |
| 2017 | 53 | 61 |
| 2018 | 55 | 56 |
| 2019 | 51 | 61 |
| 2020 | 53 | 71 |
| 2021 | 54 | 79 |
| 2022 | 48 | 74 |
| 2023 | 44 | 63 |
| 2024 | 55 | 49 |
| 2025 | 45 | 51 |
| 2026 | 31 | 36 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Mining collectors6 Oct 2026US 12,752,286 B2
- Method and apparatus for separating valuable minerals from ore22 Sep 2026US 12,741,286 B2Kaakkois-Suomen Ammattikorkeakoulu Oy
- Mining collectors15 Sep 2026US 12,734,529 B1
- Enhanced foam fractionation of oil phase from aqueous/oil mixed phase via increased viscoelasticity8 Sep 2026US 12,729,140 B2Ecolab USA Inc.
- Method for recycling iron ore tailing and use thereof25 Aug 2026US 12,716,113 B2Baotou Research Institute of Rare Earths
- Mining chemical collector compositions and processes for recovering metal from ore8 Oct 2026US 2026/0308119 A1Chevron Phillips Chemical Company LP
- 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
- Inflatable froth crowder apparatus for flotation machines27 Aug 2026US 2026/0249306 A1FLSmidth A/S
- Compositions for lithium beneficiation and methods of use20 Aug 2026US 2026/0241392 A1Ecolab USA Inc.
Most cited
By later US patents
- Foaming surfactant compositions383US 4,565,647 AThe Procter & Gamble Company · 1986
- Tar sands extraction process312US 5,985,138 AGeopetrol Equipment Ltd. · 1999
- Air-sparged hydrocyclone and method141US 4,279,743 AUniversity of Utah · 1981
- Microalgae separator apparatus and method117US 6,524,486 B2Sepal Technologies Ltd. · 2003
- Low temperature bitumen recovery process113US 4,946,597 AEsso Resources Canada Limited · 1990