F04D 29/288
Part of the wheel having an ejecting effect
Official title: {Part of the wheel having an ejecting effect, e.g. being bladeless diffuser}
F04D29/288 (Part of the wheel having an ejecting effect) appears on 29 US grants and 35 published applications in this corpus.
Search patents in F04D- Granted patents
- 29
- Published applications
- 35
- Assignees
- 20
- Inventors
- 84
- Latest grant
- 1 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 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 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 2 | 0 |
| 2012 | 0 | 0 |
| 2013 | 2 | 0 |
| 2014 | 0 | 2 |
| 2015 | 1 | 6 |
| 2016 | 0 | 1 |
| 2017 | 4 | 3 |
| 2018 | 3 | 1 |
| 2019 | 1 | 4 |
| 2020 | 1 | 2 |
| 2021 | 2 | 0 |
| 2022 | 0 | 3 |
| 2023 | 1 | 4 |
| 2024 | 7 | 2 |
| 2025 | 2 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
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- Swirl flow ceiling fan5 Nov 2024US 12,135,041 B2
- Turbomachine and apparatus comprising said turbomachine26 Jun 2025US 2025/0207605 A1Sf Energy Srl
- Pump apparatus2 Jan 2025US 2025/0003412 A1Nidec Instruments Corporation
- Fan, more particularly radial or diagonal fan11 Jul 2024US 2024/0229802 A1Ziehl-Abegg SE
- Swirl flow ceiling fan22 Feb 2024US 2024/0060511 A1
- Diffuser pipe with exit flare22 Jun 2023US 2023/0193819 A1Pratt & Whitney Canada Corp.
Most cited
By later US patents
- Side channel compressor14US 4,992,022 ASiemens Aktiengesellschaft · 1991
- Radial fan wheel11US 6,039,539 A2000
- Centrifugal venturi5US 4,453,886 A1984
- Rotor hub assembly, electric fan4US 10,107,301 B2Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg · 2018
- Radial fan wheel, fan unit and radial fan arrangement4US 9,157,452 B2Ziehl-Abegg SE · 2015