B01D 46/2403
Characterised by the physical shape or structure of the filtering element
Official title: {characterised by the physical shape or structure of the filtering element}
B01D46/2403 (Characterised by the physical shape or structure of the filtering element) appears on 3,886 US grants and 4,064 published applications in this corpus.
Search patents in B01D- Granted patents
- 3,886
- Published applications
- 4,064
- Assignees
- 1,177
- Inventors
- 6,105
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 18 | 0 |
| 1978 | 12 | 0 |
| 1979 | 19 | 0 |
| 1980 | 20 | 0 |
| 1981 | 32 | 0 |
| 1982 | 25 | 0 |
| 1983 | 22 | 0 |
| 1984 | 28 | 0 |
| 1985 | 27 | 0 |
| 1986 | 20 | 0 |
| 1987 | 33 | 0 |
| 1988 | 26 | 0 |
| 1989 | 27 | 0 |
| 1990 | 24 | 0 |
| 1991 | 17 | 0 |
| 1992 | 36 | 0 |
| 1993 | 42 | 0 |
| 1994 | 29 | 0 |
| 1995 | 45 | 0 |
| 1996 | 40 | 0 |
| 1997 | 53 | 0 |
| 1998 | 58 | 0 |
| 1999 | 60 | 0 |
| 2000 | 51 | 0 |
| 2001 | 55 | 17 |
| 2002 | 73 | 75 |
| 2003 | 63 | 79 |
| 2004 | 69 | 119 |
| 2005 | 56 | 122 |
| 2006 | 80 | 146 |
| 2007 | 60 | 155 |
| 2008 | 80 | 151 |
| 2009 | 95 | 173 |
| 2010 | 92 | 163 |
| 2011 | 130 | 138 |
| 2012 | 146 | 145 |
| 2013 | 130 | 138 |
| 2014 | 131 | 194 |
| 2015 | 135 | 211 |
| 2016 | 143 | 171 |
| 2017 | 146 | 223 |
| 2018 | 145 | 224 |
| 2019 | 179 | 195 |
| 2020 | 210 | 214 |
| 2021 | 163 | 250 |
| 2022 | 184 | 216 |
| 2023 | 158 | 181 |
| 2024 | 178 | 146 |
| 2025 | 134 | 122 |
| 2026 | 83 | 96 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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 system, filter mounting mechanism, and filter elements used in and with the filter system and filter mounting mechanism29 Sep 2026US 12,746,498 B2Altair (UK) Limited
- Filter assemblies and related filter elements8 Oct 2026US 2026/0306974 A1Donaldson Company, Inc.
- 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
- High efficiency air filter body1 Oct 2026US 2026/0295491 A1Corning Incorporated
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