B01D 46/0039
Filters or filtering processes specially modified for separating dispersed particles from gases
Official title: {with flow guiding by feed or discharge devices}
B01D46/0039 (Filters or filtering processes specially modified for separating dispersed particles from gases) appears on 1,150 US grants and 1,348 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,150
- Published applications
- 1,348
- Assignees
- 645
- Inventors
- 2,775
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 8 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 7 | 0 |
| 1986 | 7 | 0 |
| 1987 | 10 | 0 |
| 1988 | 7 | 0 |
| 1989 | 10 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 10 | 0 |
| 1993 | 10 | 0 |
| 1994 | 11 | 0 |
| 1995 | 6 | 0 |
| 1996 | 14 | 0 |
| 1997 | 9 | 0 |
| 1998 | 9 | 0 |
| 1999 | 19 | 0 |
| 2000 | 9 | 0 |
| 2001 | 14 | 5 |
| 2002 | 12 | 16 |
| 2003 | 16 | 16 |
| 2004 | 16 | 12 |
| 2005 | 5 | 19 |
| 2006 | 5 | 16 |
| 2007 | 6 | 17 |
| 2008 | 14 | 16 |
| 2009 | 16 | 28 |
| 2010 | 16 | 30 |
| 2011 | 11 | 21 |
| 2012 | 25 | 16 |
| 2013 | 12 | 26 |
| 2014 | 20 | 33 |
| 2015 | 29 | 46 |
| 2016 | 27 | 68 |
| 2017 | 58 | 80 |
| 2018 | 40 | 64 |
| 2019 | 52 | 80 |
| 2020 | 80 | 103 |
| 2021 | 58 | 124 |
| 2022 | 89 | 172 |
| 2023 | 92 | 110 |
| 2024 | 116 | 90 |
| 2025 | 82 | 74 |
| 2026 | 60 | 66 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- Systems, Methods, and Apparatuses for Producing and Packaging Medical Fluids8 Oct 2026US 2026/0307835 A1
- System and method for air decontamination24 Sep 2026US 2026/0284251 A1
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Most cited
By later US patents
- Conical filter341US 5,902,364 ADonaldson Company, Inc. · 1999
- Fluid filtering device309US 4,589,983 ADonaldson Company, Inc. · 1986
- Reverse flow air filter arrangement and method292US 5,613,992 ADonaldson Company, Inc. · 1997
- Fluid filtration device and system265US 9,867,914 B2Buffalo Filter LLC · 2018
- Cylindrical air filter with radially directed seal258US 5,547,480 ADonaldson Company, Inc. · 1996