B01D 2247/14
Fan arrangements for providing induced draft
B01D2247/14 (Fan arrangements for providing induced draft) appears on 44 US grants and 56 published applications in this corpus.
Search patents in B01D- Granted patents
- 44
- Published applications
- 56
- Assignees
- 39
- Inventors
- 107
- Latest grant
- 11 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 3 | 9 |
| 2012 | 2 | 6 |
| 2013 | 6 | 1 |
| 2014 | 5 | 3 |
| 2015 | 1 | 2 |
| 2016 | 4 | 4 |
| 2017 | 0 | 3 |
| 2018 | 1 | 4 |
| 2019 | 1 | 2 |
| 2020 | 1 | 6 |
| 2021 | 5 | 5 |
| 2022 | 4 | 4 |
| 2023 | 5 | 2 |
| 2024 | 3 | 0 |
| 2025 | 1 | 3 |
By publication year. Applications have been published since 2001.
Recent patents
- Air cleaning apparatus with a moist filter11 Mar 2025US 12,246,280 B2Watervation Co., Ltd.
- Particle-collecting device and vehicle equipped with such a device24 Dec 2024US 12,172,120 B2ALSTOM Holdings
- Methods of automated garbage chute air evacuation to improve air quality26 Nov 2024US 12,151,054 B2
- Apparatus and method for air purification and power generation2 Jan 2024US 11,857,908 B2Walter AG
- Swirl air/liquid air purifier26 Dec 2023US 11,850,542 B2
- Wet air filtration device12 Jun 2025US 2025/0189150 A1
- Air cleaning apparatus with a moist filter13 Feb 2025US 2025/0050262 A1Watervation Co., Ltd.
- Air cleaning apparatus with a moist filter13 Feb 2025US 2025/0050263 A1Watervation Co., Ltd.
- Wavy vortex air purifier17 Aug 2023US 2023/0256375 A1Gonggong Co., Ltd.
- Air purifier with self-sustaining properties23 Feb 2023US 2023/0058655 A1
Most cited
By later US patents
- Apparatus and method for extracting heat from contaminated waste steam23US 6,019,819 AAlpha Engineers, Inc. · 2000
- Method and apparatus for multi-stage air treatment system7US 8,128,742 B12012
- Dust filter apparatus5US 4,253,854 ACoal Industry (Patents) Limited · 1981
- Removable misting array assembly for an abatement system5US 8,439,333 B2Caldwell Tanks, Inc. · 2013
- Misting array assembly of an abatement system5US 8,870,166 B2Caldwell Tanks, Inc. · 2014