B01D 21/2433
Discharge mechanisms for floating particles
Official title: {Discharge mechanisms for floating particles}
B01D21/2433 (Discharge mechanisms for floating particles) appears on 526 US grants and 305 published applications in this corpus.
Search patents in B01D- Granted patents
- 526
- Published applications
- 305
- Assignees
- 289
- Inventors
- 758
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 6 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 8 | 0 |
| 1987 | 8 | 0 |
| 1988 | 4 | 0 |
| 1989 | 10 | 0 |
| 1990 | 4 | 0 |
| 1991 | 16 | 0 |
| 1992 | 13 | 0 |
| 1993 | 11 | 0 |
| 1994 | 16 | 0 |
| 1995 | 13 | 0 |
| 1996 | 27 | 0 |
| 1997 | 17 | 0 |
| 1998 | 24 | 0 |
| 1999 | 15 | 0 |
| 2000 | 14 | 0 |
| 2001 | 16 | 4 |
| 2002 | 12 | 13 |
| 2003 | 18 | 32 |
| 2004 | 18 | 18 |
| 2005 | 17 | 17 |
| 2006 | 12 | 18 |
| 2007 | 10 | 10 |
| 2008 | 8 | 10 |
| 2009 | 8 | 11 |
| 2010 | 7 | 12 |
| 2011 | 11 | 5 |
| 2012 | 6 | 8 |
| 2013 | 4 | 7 |
| 2014 | 6 | 6 |
| 2015 | 4 | 11 |
| 2016 | 8 | 2 |
| 2017 | 7 | 5 |
| 2018 | 8 | 13 |
| 2019 | 9 | 9 |
| 2020 | 15 | 16 |
| 2021 | 18 | 22 |
| 2022 | 20 | 13 |
| 2023 | 8 | 13 |
| 2024 | 10 | 11 |
| 2025 | 10 | 12 |
| 2026 | 10 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Methods and systems for organic recovery in solvent extraction8 Sep 2026US 12,728,370 B2Freeport Minerals Corporation
- Separation of fluids containing solids28 Apr 2026US 12,611,678 B2World Water Works, Inc.
- Waste water treatment apparatus21 Apr 2026US 12,605,654 B2Environmental Products & Services Co., Inc.
- Automated skimmer system31 Mar 2026US 12,589,334 B2
- Purification apparatus3 Mar 2026US 12,564,845 B2Shimadzu Corporation
- Methods and systems for organic recovery in solvent extraction1 Oct 2026US 2026/0295474 A1Freeport Minerals Corporation
- Automated skimmer system13 Aug 2026US 2026/0233128 A1
- Separation of fluids containing solids13 Aug 2026US 2026/0233236 A1World Water Works, Inc.
- Scum removal system in sewage treatment plant30 Jul 2026US 2026/0217571 A1Utsunomiya Kogyo Co., Ltd.
- Sand-manure liquid separation plant, a use of the plant, and a method of using the plant12 Mar 2026US 2026/0070004 A1Stjernholm A/S
Most cited
By later US patents
- Swimming pool control system134US 5,730,861 A1998
- Blood component separator disk124US 7,077,273 B2Harvest Technologies Corporation · 2006
- Microalgae separator apparatus and method117US 6,524,486 B2Sepal Technologies Ltd. · 2003
- Method and apparatus for treatment of wastewater employing membrane bioreactors92US 6,805,806 B2Hydrotreat, Inc. · 2004
- Oil-water separator73US 4,722,800 AHighland Tank and Manufacturing Company · 1988