B01D 46/0027
Filters or filtering processes specially modified for separating dispersed particles from gases
Official title: {with additional separating or treating functions}
B01D46/0027 (Filters or filtering processes specially modified for separating dispersed particles from gases) appears on 2,219 US grants and 2,882 published applications in this corpus.
Search patents in B01D- Granted patents
- 2,219
- Published applications
- 2,882
- Assignees
- 1,357
- Inventors
- 5,690
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 7 | 0 |
| 1978 | 10 | 0 |
| 1979 | 8 | 0 |
| 1980 | 8 | 0 |
| 1981 | 10 | 0 |
| 1982 | 6 | 0 |
| 1983 | 8 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 9 | 0 |
| 1990 | 7 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 13 | 0 |
| 1994 | 14 | 0 |
| 1995 | 16 | 0 |
| 1996 | 9 | 0 |
| 1997 | 17 | 0 |
| 1998 | 30 | 0 |
| 1999 | 24 | 0 |
| 2000 | 33 | 0 |
| 2001 | 36 | 11 |
| 2002 | 31 | 35 |
| 2003 | 39 | 52 |
| 2004 | 47 | 64 |
| 2005 | 34 | 56 |
| 2006 | 30 | 53 |
| 2007 | 23 | 69 |
| 2008 | 32 | 43 |
| 2009 | 37 | 55 |
| 2010 | 34 | 85 |
| 2011 | 43 | 57 |
| 2012 | 50 | 54 |
| 2013 | 41 | 45 |
| 2014 | 46 | 84 |
| 2015 | 53 | 116 |
| 2016 | 80 | 116 |
| 2017 | 84 | 172 |
| 2018 | 87 | 154 |
| 2019 | 146 | 168 |
| 2020 | 142 | 177 |
| 2021 | 135 | 268 |
| 2022 | 154 | 294 |
| 2023 | 148 | 218 |
| 2024 | 163 | 181 |
| 2025 | 139 | 135 |
| 2026 | 100 | 120 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 46/003Including coalescing means for the separation of liquid702
- B01D 46/0036By adsorption or absorption615
- B01D 46/0028Provided with antibacterial or antifungal means416
- B01D 46/0032Using electrostatic forces to remove particles320
- B01D 46/0038With means for influencing the odor243
- B01D 46/0035By wetting59
- B01D 46/0034Using magnetic forces to remove particles29
Recent patents
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- Systems and methods for rotating coalescers maintaining positive recirculation through a dynamic seal6 Oct 2026US 12,752,228 B2Atmus Filtration IP Inc.
- Crankcase oil separation device for internal combustion engine6 Oct 2026US 12,752,229 B2Caterpillar Inc.
- Food waste management system6 Oct 2026US 12,753,004 B2SharkNinja Operating LLC
- User-prompted cleaning by autonomous vacuum8 Oct 2026US 2026/0305895 A1Matic Robots, Inc. (fka Matician, Inc.)
- Automotive air filters with hydrocarbon-absorbing media8 Oct 2026US 2026/0306983 A1
- Gas processing device and gas production method8 Oct 2026US 2026/0307003 A1Hirata Corporation
- Hybrid filter unit8 Oct 2026US 2026/0307082 A1Brairtech Sweden AB
- Oil separator structure for blow-by gas recirculation system, and vehicle1 Oct 2026US 2026/0295464 A1Isuzu Motors Limited
Most cited
By later US patents
- Medical/surgical waste collection unit including waste containers of different storage volumes with inter-container transfer valve and independently controlled vacuum levels332US 7,621,898 B2Stryker Corporation · 2009
- Smoke plume evacuation filtration system295US 6,585,791 B12003
- Reverse flow air filter arrangement and method292US 5,613,992 ADonaldson Company, Inc. · 1997
- Medical/surgical waste collection and disposal system including a rover and a docker, the docker having features facilitating the alignment of the docker with the rover285US 8,740,866 B2Stryker Corporation · 2014
- Wick and relief valve for disposable laparoscopic smoke evacuation system269US 9,011,366 B2Buffalo Filter LLC · 2015