B01D 50/00
Combinations of methods or devices for separating particles from gases or vapours
B01D50/00 (Combinations of methods or devices for separating particles from gases or vapours) appears on 1,891 US grants and 1,521 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,891
- Published applications
- 1,521
- Assignees
- 986
- Inventors
- 3,379
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 30 | 0 |
| 1978 | 16 | 0 |
| 1979 | 27 | 0 |
| 1980 | 46 | 0 |
| 1981 | 48 | 0 |
| 1982 | 23 | 0 |
| 1983 | 16 | 0 |
| 1984 | 20 | 0 |
| 1985 | 13 | 0 |
| 1986 | 14 | 0 |
| 1987 | 24 | 0 |
| 1988 | 21 | 0 |
| 1989 | 28 | 0 |
| 1990 | 22 | 0 |
| 1991 | 21 | 0 |
| 1992 | 18 | 0 |
| 1993 | 27 | 0 |
| 1994 | 26 | 0 |
| 1995 | 25 | 0 |
| 1996 | 21 | 0 |
| 1997 | 31 | 0 |
| 1998 | 31 | 0 |
| 1999 | 25 | 0 |
| 2000 | 32 | 0 |
| 2001 | 34 | 17 |
| 2002 | 36 | 30 |
| 2003 | 42 | 37 |
| 2004 | 30 | 39 |
| 2005 | 25 | 48 |
| 2006 | 29 | 29 |
| 2007 | 23 | 25 |
| 2008 | 16 | 28 |
| 2009 | 24 | 34 |
| 2010 | 30 | 60 |
| 2011 | 38 | 32 |
| 2012 | 36 | 36 |
| 2013 | 26 | 52 |
| 2014 | 38 | 70 |
| 2015 | 58 | 61 |
| 2016 | 60 | 96 |
| 2017 | 65 | 82 |
| 2018 | 57 | 100 |
| 2019 | 88 | 115 |
| 2020 | 102 | 99 |
| 2021 | 91 | 92 |
| 2022 | 94 | 90 |
| 2023 | 70 | 80 |
| 2024 | 66 | 72 |
| 2025 | 56 | 51 |
| 2026 | 34 | 46 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 50/20Combinations of devices covered by groups b01d45/00 and b01d46/001,296
- B01D 50/40Combinations of devices covered by groups b01d45/00 and b01d47/00188
- B01D 50/60Combinations of devices covered by groups b01d46/00 and b01d47/00142
- B01D 50/10Combinations of devices covered by groups b01d45/00, b01d46/00 and b01d47/0033
Recent patents
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Most cited
By later US patents
- Air filter arrangement having first and second filter media dividing a housing and methods343US 6,210,469 B1Donaldson Company, Inc. · 2001
- Air filter cartridge305US 6,966,940 B2Donaldson Company, Inc. · 2005
- Fluid filtration device and system265US 9,867,914 B2Buffalo Filter LLC · 2018
- Vacuum filter257US 5,230,722 AAmway Corporation · 1993
- Pressure side integrated air filter and filtering networks for engines222US 5,472,463 ACummins Engine Company, Inc. · 1995