F04D 17/167
Operating by means of fibrous or porous elements
Official title: {Operating by means of fibrous or porous elements (suction filters F04D29/701), e.g. with sponge rotors}
F04D17/167 (Operating by means of fibrous or porous elements) appears on 24 US grants and 26 published applications in this corpus.
Search patents in F04D- Granted patents
- 24
- Published applications
- 26
- Assignees
- 16
- Inventors
- 66
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 3 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 3 |
| 2016 | 1 | 2 |
| 2017 | 3 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 2 |
| 2020 | 0 | 3 |
| 2021 | 1 | 2 |
| 2022 | 3 | 1 |
| 2023 | 2 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fan component, fan, fan unit, air conditioner, heat pump device, and method for manufacturing fan component9 Jun 2026US 12,650,133 B2Daikin Industries, Ltd.
- Swirl flow ceiling fan5 Nov 2024US 12,135,041 B2
- Volumetric resistance blowers22 Aug 2023US 11,732,727 B2Intel Corporation
- Blower assembly for a powered air-purifying respirator18 Apr 2023US 11,628,318 B1E. D. Bullard Company
- Fluid pressurizing structure and fan using same13 Dec 2022US 11,525,463 B2Asia Vital Components Co., Ltd.
- Fan component, fan, fan unit, air conditioner, heat pump device, and method for manufacturing fan component8 Jan 2026US 2026/0009405 A1Daikin Industries, Ltd.
- Swirl flow ceiling fan22 Feb 2024US 2024/0060511 A1
- Volumetric resistance blowers13 Jan 2022US 2022/0010808 A1Intel Corporation
- Fluid pressurizing structure and fan using same11 Nov 2021US 2021/0348625 A1Asia Vital Components Co., Ltd.
- Fan and fan impeller thereof8 Apr 2021US 2021/0102550 A1Delta Electronics, Inc.
Most cited
By later US patents
- Rotating filtration cartridge and blower for HVAC applications37US 6,099,608 A3M Innovative Properties Company · 2000
- High efficiency fluid movers34US 7,455,504 B2Hill Engineering, Inc. · 2008
- Moving sorbent filter device28US 6,099,609 A3M Innovative Properties Company · 2000
- Moving filter device having filter elements with flow passages and method of filtering air19US 6,277,176 B13M Innovative Properties Company · 2001
- Air blower12US 8,951,024 B2Sharp Kabushiki Kaisha · 2015