B01D 47/022
By using a liquid curtain
Official title: {by using a liquid curtain (B01D47/06 takes precedence)}
B01D47/022 (By using a liquid curtain) appears on 36 US grants and 27 published applications in this corpus.
Search patents in B01D- Granted patents
- 36
- Published applications
- 27
- Assignees
- 24
- Inventors
- 77
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 4 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 2 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 2 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 2 |
| 2017 | 0 | 4 |
| 2018 | 3 | 3 |
| 2019 | 6 | 2 |
| 2020 | 1 | 0 |
| 2021 | 0 | 2 |
| 2022 | 1 | 1 |
| 2023 | 2 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fluid treatment apparatus10 Mar 2026US 12,569,800 B2Seoul Viosys Co., Ltd.
- Device for bringing a gas stream and a liquid stream into contact23 May 2023US 11,654,391 B2Starklab
- Water storage device and exhaust gas treatment system28 Feb 2023US 11,590,451 B2Changxin Memory Technologies, Inc.
- Exhaust gas processing apparatus13 Dec 2022US 11,527,422 B2Ebara Corporation
- Liquid film dust arrester and flue gas desulfurization system22 Sep 2020US 10,780,386 B2Chiyoda Corporation
- Air purifier for decomposing smoke through water filtration27 Nov 2025US 2025/0360448 A1Shenzhen Blue Whale Future Technology Co., Ltd
- Exahust gas treatment apparatus12 Jun 2025US 2025/0186929 A1Ebara Corporation
- Fluid treatment apparatus2 Nov 2023US 2023/0347280 A1Seoul Viosys Co., Ltd.
- Water storage device and exhaust gas treatment system27 Jan 2022US 2022/0023797 A1Changxin Memory Technologies, Inc.
- Device for bringing a gas stream and a liquid stream into contact7 Oct 2021US 2021/0308614 A1Starklab
Most cited
By later US patents
- Filter assembly for a spray booth43US 4,469,595 AProtectaire Systems Co. · 1984
- Fume hood30US 4,351,652 A1982
- Multi-wash spray booth and method of capturing air borne particles22US 4,608,064 AProtectaire Systems Co. · 1986
- Air washer/scrubber20US 4,328,012 ABinks Manufacturing Company · 1982
- Air scrubbing system16US 4,515,073 AAlpha-Debon Industries, Inc. · 1985