B01D 21/0012
Settling tanks making use of filters
Official title: {Settling tanks making use of filters, e.g. by floating layers of particulate material}
B01D21/0012 (Settling tanks making use of filters) appears on 769 US grants and 616 published applications in this corpus.
Search patents in B01D- Granted patents
- 769
- Published applications
- 616
- Assignees
- 520
- Inventors
- 1,385
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 6 | 0 |
| 1978 | 7 | 0 |
| 1979 | 15 | 0 |
| 1980 | 10 | 0 |
| 1981 | 7 | 0 |
| 1982 | 5 | 0 |
| 1983 | 11 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 9 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 8 | 0 |
| 1991 | 11 | 0 |
| 1992 | 11 | 0 |
| 1993 | 11 | 0 |
| 1994 | 11 | 0 |
| 1995 | 8 | 0 |
| 1996 | 22 | 0 |
| 1997 | 22 | 0 |
| 1998 | 18 | 0 |
| 1999 | 15 | 0 |
| 2000 | 15 | 0 |
| 2001 | 23 | 8 |
| 2002 | 15 | 27 |
| 2003 | 17 | 23 |
| 2004 | 16 | 21 |
| 2005 | 15 | 31 |
| 2006 | 22 | 35 |
| 2007 | 21 | 32 |
| 2008 | 18 | 26 |
| 2009 | 19 | 22 |
| 2010 | 23 | 22 |
| 2011 | 25 | 18 |
| 2012 | 17 | 13 |
| 2013 | 11 | 14 |
| 2014 | 13 | 10 |
| 2015 | 14 | 23 |
| 2016 | 9 | 22 |
| 2017 | 17 | 33 |
| 2018 | 17 | 24 |
| 2019 | 30 | 28 |
| 2020 | 15 | 37 |
| 2021 | 35 | 41 |
| 2022 | 36 | 30 |
| 2023 | 31 | 27 |
| 2024 | 25 | 20 |
| 2025 | 24 | 19 |
| 2026 | 11 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filter device for removing particles from a fluid28 Jul 2026US 12,691,458 B2Mst Nl B.V.
- System and method for scale management in water heating system26 May 2026US 12,638,215 B2Bradford White Corporation
- Bi-directional filter19 May 2026US 12,629,620 B2Combipro AS
- Multi-stage circulating separation equipment28 Apr 2026US 12,612,318 B2
- Shaker fluid level automatic control7 Apr 2026US 12,594,512 B2National Oilwell Varco, L. P.
- Filter device for removing particles from a fluid1 Oct 2026US 2026/0295603 A1Mst Nl B.V.
- Settling assembly for decanting an effluent3 Sep 2026US 2026/0257153 A1Suez International
- Stormwater management system for urban storage and recovery13 Aug 2026US 2026/0234042 A1
- Mud handling auger system6 Aug 2026US 2026/0225005 A1ESD Waste2Water, Inc.
- Methods and apparatuses for distilling seawater and brine and removing salt2 Apr 2026US 2026/0091990 A1Desert Water LLC
Most cited
By later US patents
- Methods and apparatus for isolating platelets from blood151US 7,470,371 B2Hanuman LLC · 2008
- Methods and apparatus for isolating platelets from blood150US 7,223,346 B2Hanuman LLC · 2007
- Split focusing cytometer142US 6,674,525 B2Micronics, Inc. · 2004
- Swimming pool control system134US 5,730,861 A1998
- Apparatus and method for separating blood components123US 4,424,132 AAsahi Kasei Kogyo Kabushiki Kaisha · 1984