B01D 47/00
Separating dispersed particles from gases, air or vapours by liquid as separating
Official title: Separating dispersed particles from gases, air or vapours by liquid as separating agent (B01D45/10 takes precedence; fractionating columns or parts thereof B01D3/16)
B01D47/00 (Separating dispersed particles from gases, air or vapours by liquid as separating) appears on 1,689 US grants and 1,246 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,689
- Published applications
- 1,246
- Assignees
- 1,027
- Inventors
- 3,374
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 63 | 0 |
| 1977 | 48 | 0 |
| 1978 | 37 | 0 |
| 1979 | 33 | 0 |
| 1980 | 37 | 0 |
| 1981 | 49 | 0 |
| 1982 | 33 | 0 |
| 1983 | 26 | 0 |
| 1984 | 23 | 0 |
| 1985 | 17 | 0 |
| 1986 | 24 | 0 |
| 1987 | 23 | 0 |
| 1988 | 27 | 0 |
| 1989 | 24 | 0 |
| 1990 | 18 | 0 |
| 1991 | 21 | 0 |
| 1992 | 17 | 0 |
| 1993 | 19 | 0 |
| 1994 | 22 | 0 |
| 1995 | 20 | 0 |
| 1996 | 16 | 0 |
| 1997 | 17 | 0 |
| 1998 | 31 | 0 |
| 1999 | 39 | 0 |
| 2000 | 31 | 0 |
| 2001 | 39 | 7 |
| 2002 | 30 | 23 |
| 2003 | 28 | 33 |
| 2004 | 25 | 24 |
| 2005 | 21 | 38 |
| 2006 | 19 | 34 |
| 2007 | 14 | 23 |
| 2008 | 11 | 36 |
| 2009 | 12 | 23 |
| 2010 | 25 | 30 |
| 2011 | 21 | 46 |
| 2012 | 20 | 31 |
| 2013 | 40 | 40 |
| 2014 | 36 | 46 |
| 2015 | 40 | 54 |
| 2016 | 46 | 59 |
| 2017 | 46 | 61 |
| 2018 | 35 | 66 |
| 2019 | 62 | 79 |
| 2020 | 63 | 64 |
| 2021 | 65 | 99 |
| 2022 | 64 | 95 |
| 2023 | 62 | 71 |
| 2024 | 63 | 59 |
| 2025 | 51 | 70 |
| 2026 | 36 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 47/06Spray cleaning777
- B01D 47/02Separating dispersed particles from gases, air or vapours by liquid as separating504
- B01D 47/10Venturi scrubbers224
- B01D 47/14Packed scrubbers119
- B01D 47/12Washers with plural different washing sections111
- B01D 47/16Apparatus having rotary means, other than rotatable nozzles, for atomising the cleaning100
- B01D 47/05Separating dispersed particles from gases, air or vapours by liquid as separating67
- B01D 47/04Separating dispersed particles from gases, air or vapours by liquid as separating24
Recent patents
- Portable breathing air filtering device and method6 Oct 2026US 12,752,231 B2King Abdullah University of Science and Technology
- Exhaust system and exhaust method using buffer29 Sep 2026US 12,746,501 B2Samsung Electronics Co., Ltd.
- Gas separation device system using waveform disks15 Sep 2026US 12,734,477 B2
- Pollutant capturer and mobilizer8 Sep 2026US 12,729,640 B2
- Method of recycling helium from waste gas in semiconductor process1 Sep 2026US 12,722,973 B2Samsung Electronics Co., Ltd.
- Environmentally friendly dust and airborne particulate elimination and control composition and distribution system8 Oct 2026US 2026/0306987 A1
- Fluid system and method of separating oil from air in aircraft engine8 Oct 2026US 2026/0306988 A1Pratt & Whitney Canada Corp.
- Device for filtering ambient air8 Oct 2026US 2026/0312089 A1Cellcentric GmbH & Co. KG
- Conditioning wet sour gas via integrated desulfurization and dehydration24 Sep 2026US 2026/0284582 A1Merichem Technologies, LLC
- System to Remove Food Particles from Air Stream27 Aug 2026US 2026/0251326 A1MP Equipment, LLC
Most cited
By later US patents
- Purifier for the physical-chemical treatment of combustion gases and other gases containing polluting or noxious constituents111US 3,933,450 A1976
- Using liquid desiccant as a regenerable filter for capturing and deactivating contaminants105US 7,306,650 B2Midwest Research Institute · 2007
- Heterogeneous reactor104US 4,744,958 A1988
- Process for treating stack gases102US 4,369,167 A1983
- Prandtl layer turbine92US 6,328,527 B1Fantom Technologies Inc. · 2001