B01D 21/24
Feed or discharge mechanisms for settling tanks
B01D21/24 (Feed or discharge mechanisms for settling tanks) appears on 2,359 US grants and 1,635 published applications in this corpus.
Search patents in B01D- Granted patents
- 2,359
- Published applications
- 1,635
- Assignees
- 1,260
- Inventors
- 3,695
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 39 | 0 |
| 1977 | 32 | 0 |
| 1978 | 33 | 0 |
| 1979 | 38 | 0 |
| 1980 | 31 | 0 |
| 1981 | 30 | 0 |
| 1982 | 23 | 0 |
| 1983 | 21 | 0 |
| 1984 | 15 | 0 |
| 1985 | 18 | 0 |
| 1986 | 19 | 0 |
| 1987 | 26 | 0 |
| 1988 | 17 | 0 |
| 1989 | 32 | 0 |
| 1990 | 29 | 0 |
| 1991 | 43 | 0 |
| 1992 | 35 | 0 |
| 1993 | 31 | 0 |
| 1994 | 43 | 0 |
| 1995 | 42 | 0 |
| 1996 | 67 | 0 |
| 1997 | 66 | 0 |
| 1998 | 86 | 0 |
| 1999 | 72 | 0 |
| 2000 | 69 | 0 |
| 2001 | 61 | 20 |
| 2002 | 50 | 41 |
| 2003 | 53 | 61 |
| 2004 | 49 | 68 |
| 2005 | 48 | 63 |
| 2006 | 40 | 51 |
| 2007 | 44 | 54 |
| 2008 | 32 | 44 |
| 2009 | 43 | 54 |
| 2010 | 37 | 43 |
| 2011 | 42 | 60 |
| 2012 | 41 | 43 |
| 2013 | 42 | 80 |
| 2014 | 48 | 79 |
| 2015 | 49 | 82 |
| 2016 | 50 | 76 |
| 2017 | 74 | 71 |
| 2018 | 77 | 96 |
| 2019 | 67 | 60 |
| 2020 | 83 | 107 |
| 2021 | 102 | 95 |
| 2022 | 76 | 72 |
| 2023 | 72 | 69 |
| 2024 | 49 | 58 |
| 2025 | 39 | 53 |
| 2026 | 34 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 21/245Discharge mechanisms for the sediments1,077
- B01D 21/2405Feed mechanisms for settling tanks894
- B01D 21/2444Discharge mechanisms for the classified liquid555
- B01D 21/2433Discharge mechanisms for floating particles526
- B01D 21/2427The feed or discharge opening located at a distant position from the475
- B01D 21/2488Bringing about a partial recirculation of the liquid278
- B01D 21/2494Provided with means for the removal of gas207
Recent patents
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- Method for treating a wastewater effluent in a sequencing batch reactor (SBR) having a constant level and controlled recovery25 Aug 2026US 12,715,799 B2Suez International
- Hydrodynamic separator with multiple settling sump cones8 Oct 2026US 2026/0306971 A1Advanced Drainage Systems, Inc.
- System for cleaning equipment intended to be placed in a solid/liquid separation settler, and associated installation and method1 Oct 2026US 2026/0295472 A1Suez International
- Systems for Grit Removal1 Oct 2026US 2026/0295473 A1
- Methods and systems for organic recovery in solvent extraction1 Oct 2026US 2026/0295474 A1Freeport Minerals Corporation
- Settling assembly for decanting an effluent3 Sep 2026US 2026/0257153 A1Suez International
Most cited
By later US patents
- Robust system for screening mail for biological agents1,080US 6,887,710 B2MesoSystems Technology, Inc. · 2005
- Enhanced yield platelet collection systems and methods216US 5,370,802 ABaxter International Inc. · 1994
- Centrifugation pheresis system202US 4,834,890 ABaxter International Inc. · 1989
- Time based interface detection systems for blood processing apparatus186US 5,316,667 ABaxter International Inc. · 1994
- Separator float for blood collection tubes with water swellable material176US 5,736,033 A1998