B01D 2247/12
Fan arrangements for providing forced draft
B01D2247/12 (Fan arrangements for providing forced draft) appears on 26 US grants and 32 published applications in this corpus.
Search patents in B01D- Granted patents
- 26
- Published applications
- 32
- Assignees
- 20
- Inventors
- 59
- Latest grant
- 6 Jan 2026
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 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 4 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 2 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 2 | 1 |
| 2014 | 2 | 3 |
| 2015 | 2 | 2 |
| 2016 | 2 | 0 |
| 2017 | 2 | 3 |
| 2018 | 3 | 5 |
| 2019 | 2 | 3 |
| 2020 | 0 | 3 |
| 2021 | 1 | 3 |
| 2022 | 1 | 1 |
| 2023 | 3 | 0 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air purifier6 Jan 2026US 12,516,834 B1Baren Home Appliance Technology (Dongguan) Co., Ltd.
- Packed tower26 Nov 2024US 12,151,192 B2Edwards Limited
- Air purifier24 Oct 2023US 11,794,143 B2Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd.
- Air purifier and air purifying system12 Sep 2023US 11,752,461 B2Chungang University Industry Academic Cooperation Foundation
- Device for bringing a gas stream and a liquid stream into contact23 May 2023US 11,654,391 B2Starklab
- Wet scrubber for capturing dust from a bulk powder16 Apr 2026US 2026/0102728 A1Halliburton Energy Services.Inc.
- Wet air filtration device12 Jun 2025US 2025/0189150 A1
- Packed tower1 Sep 2022US 2022/0274044 A1Edwards Limited
- Device for bringing a gas stream and a liquid stream into contact7 Oct 2021US 2021/0308614 A1Starklab
- Air Purifier6 May 2021US 2021/0129070 A1Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd.
Most cited
By later US patents
- System to remove contaminants from air stream14US 9,061,230 B22015
- Method and device for cleaning air11US 8,758,680 B22014
- Dust filter apparatus5US 4,253,854 ACoal Industry (Patents) Limited · 1981
- Air purifier and air purifying system4US 11,752,461 B2Chungang University Industry Academic Cooperation Foundation · 2023
- Wet type dust collector for air purifying4US 9,149,755 B22015