B01D 47/02
Separating dispersed particles from gases, air or vapours by liquid as separating
Official title: by passing the gas or air or vapour over or through a liquid bath
B01D47/02 (Separating dispersed particles from gases, air or vapours by liquid as separating) appears on 504 US grants and 394 published applications in this corpus.
Search patents in B01D- Granted patents
- 504
- Published applications
- 394
- Assignees
- 329
- Inventors
- 1,018
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 7 | 0 |
| 1978 | 10 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 12 | 0 |
| 1982 | 9 | 0 |
| 1983 | 3 | 0 |
| 1984 | 8 | 0 |
| 1985 | 4 | 0 |
| 1986 | 9 | 0 |
| 1987 | 10 | 0 |
| 1988 | 14 | 0 |
| 1989 | 11 | 0 |
| 1990 | 3 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 9 | 0 |
| 1994 | 7 | 0 |
| 1995 | 6 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 7 | 0 |
| 1999 | 20 | 0 |
| 2000 | 10 | 0 |
| 2001 | 14 | 3 |
| 2002 | 10 | 4 |
| 2003 | 6 | 10 |
| 2004 | 8 | 6 |
| 2005 | 7 | 15 |
| 2006 | 5 | 16 |
| 2007 | 7 | 5 |
| 2008 | 3 | 7 |
| 2009 | 7 | 8 |
| 2010 | 7 | 7 |
| 2011 | 3 | 17 |
| 2012 | 8 | 7 |
| 2013 | 10 | 12 |
| 2014 | 12 | 12 |
| 2015 | 11 | 20 |
| 2016 | 17 | 14 |
| 2017 | 8 | 20 |
| 2018 | 10 | 34 |
| 2019 | 19 | 23 |
| 2020 | 23 | 14 |
| 2021 | 17 | 33 |
| 2022 | 22 | 29 |
| 2023 | 22 | 19 |
| 2024 | 21 | 18 |
| 2025 | 12 | 22 |
| 2026 | 12 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 47/021By bubbling the gas through a liquid bath240
- B01D 47/027By directing the gas to be cleaned essentially tangential to the liquid86
- B01D 47/024By impinging the gas to be cleaned essentially in a perpendicular direction63
- B01D 47/025By contacting gas and liquid with a static flow mixer41
- B01D 47/028By directing the gas through a wetted wire mesh or a perforated40
- B01D 47/022By using a liquid curtain36
Recent patents
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- Separating carbon dioxide and hydrogen from a multicomponent gaseous stream7 Jul 2026US 12,674,107 B2Saudi Arabian Oil Company
- Separator system and method19 May 2026US 12,631,076 B2
- Device for filtering ambient air8 Oct 2026US 2026/0312089 A1Cellcentric GmbH & Co. KG
- System to Remove Food Particles from Air Stream27 Aug 2026US 2026/0251326 A1MP Equipment, LLC
- Biomass gasification gas treatment apparatus13 Aug 2026US 2026/0234484 A1Biomass Energy Corporation
- Layout of hydrogen and oxygen manufacturing plant using hydrogen and oxygen production cells30 Jul 2026US 2026/0218403 A1
- Apparatus and method for a cleaning device16 Jul 2026US 2026/0199938 A1Dyson Technology Limited
Most cited
By later US patents
- Assembly for wet cleaning of combustion gases derived from combustion processes, especially the combustion of coal, coke and fuel oil74US 5,468,270 A1995
- Ultra-filtration vacuum system72US 5,922,093 AMiracle Marketing Corporation · 1999
- Exhaust gas scrubber for internal combustion engines68US 4,300,924 APACCAR Inc · 1981
- Air filter65US 5,848,592 A1998
- Compliant coupling or adaptor62US 8,544,465 B2RedMed Limited · 2013