B01D 46/24
Particle separators
Official title: Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
B01D46/24 (Particle separators) appears on 4,411 US grants and 4,393 published applications in this corpus.
Search patents in B01D- Granted patents
- 4,411
- Published applications
- 4,393
- Assignees
- 1,416
- Inventors
- 7,072
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 26 | 0 |
| 1978 | 24 | 0 |
| 1979 | 26 | 0 |
| 1980 | 34 | 0 |
| 1981 | 50 | 0 |
| 1982 | 31 | 0 |
| 1983 | 29 | 0 |
| 1984 | 36 | 0 |
| 1985 | 39 | 0 |
| 1986 | 25 | 0 |
| 1987 | 42 | 0 |
| 1988 | 34 | 0 |
| 1989 | 42 | 0 |
| 1990 | 34 | 0 |
| 1991 | 21 | 0 |
| 1992 | 45 | 0 |
| 1993 | 54 | 0 |
| 1994 | 39 | 0 |
| 1995 | 62 | 0 |
| 1996 | 54 | 0 |
| 1997 | 64 | 0 |
| 1998 | 79 | 0 |
| 1999 | 72 | 0 |
| 2000 | 66 | 0 |
| 2001 | 67 | 18 |
| 2002 | 80 | 83 |
| 2003 | 73 | 87 |
| 2004 | 80 | 138 |
| 2005 | 72 | 132 |
| 2006 | 87 | 157 |
| 2007 | 61 | 167 |
| 2008 | 90 | 165 |
| 2009 | 102 | 182 |
| 2010 | 99 | 172 |
| 2011 | 140 | 148 |
| 2012 | 150 | 146 |
| 2013 | 133 | 142 |
| 2014 | 139 | 204 |
| 2015 | 141 | 218 |
| 2016 | 149 | 175 |
| 2017 | 154 | 231 |
| 2018 | 150 | 241 |
| 2019 | 187 | 215 |
| 2020 | 224 | 233 |
| 2021 | 178 | 275 |
| 2022 | 196 | 236 |
| 2023 | 173 | 216 |
| 2024 | 196 | 168 |
| 2025 | 151 | 134 |
| 2026 | 95 | 110 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Filter unit with a filter block, a damping layer and a housing, and process of manufacturing such a filter unit6 Oct 2026US 12,752,136 B2Dräger Safety AG & Co. KGaA
- Crankcase oil separation device for internal combustion engine6 Oct 2026US 12,752,229 B2Caterpillar Inc.
- Air filtration assembly6 Oct 2026US 12,752,230 B2Ufi Innovation Center S.R.L.
- Haircare appliance29 Sep 2026US 12,746,492 B2Dyson Technology Limited
- Separating device with a separating element29 Sep 2026US 12,746,495 B2Mann+Hummel GmbH
- Filter assemblies and related filter elements8 Oct 2026US 2026/0306974 A1Donaldson Company, Inc.
- Stackable air treatment device8 Oct 2026US 2026/0306982 A1Carrier Corporation
- Add on auto clean assembly for a vacuum filtration system of a dry bulk trailer and method of using the same8 Oct 2026US 2026/0306984 A1Bulk Tank, Inc.
- Fluid delivery module8 Oct 2026US 2026/0314292 A1Ichor Systems, Inc.
- Gas filter element, filter device and method of use1 Oct 2026US 2026/0295490 A1Pall Corporation
Most cited
By later US patents
- Filter material construction and method335US 5,672,399 ADonaldson Company, Inc. · 1997
- Diesel particulate trap330US 4,329,162 ACorning Glass Works · 1982
- Composite planar and triangularly pleated filter element307US 4,925,561 ATsuchiya Mfg. Co., Ltd. · 1990
- Reverse flow air filter arrangement and method292US 5,613,992 ADonaldson Company, Inc. · 1997
- Cylindrical air filter with lightweight housing and radially directed seal282US 4,720,292 ADonaldson Company, Inc. · 1988