F04D 29/305
Flexible vanes
Official title: {Flexible vanes}
F04D29/305 (Flexible vanes) appears on 28 US grants and 29 published applications in this corpus.
Search patents in F04D- Granted patents
- 28
- Published applications
- 29
- Assignees
- 21
- Inventors
- 81
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 3 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 3 | 2 |
| 2018 | 0 | 2 |
| 2019 | 3 | 3 |
| 2020 | 4 | 4 |
| 2021 | 1 | 2 |
| 2022 | 2 | 1 |
| 2023 | 2 | 0 |
| 2024 | 1 | 2 |
| 2025 | 3 | 3 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Impeller with variable backsweep angle9 Dec 2025US 12,492,707 B2Carrier Corporation
- Secondary flow guide vane of a turbomachine and turbomachine provided therewith29 Jul 2025US 12,372,001 B2Safran Aircraft Engines
- Unducted rectifier for a turbomachine, turbomachine module and aircraft turbomachine6 May 2025US 12,291,980 B2Safran Aircraft Engines
- Flexible guide vane structure of mixed flow pump with adjustable flow area, mixed flow pump and adjustment method21 May 2024US 11,988,222 B2Jiangsu University
- Fan8 Aug 2023US 11,719,252 B2Acer Incorporated
- Aircraft and a power unit thereof30 Jul 2026US 2026/0218725 A1
- Impeller with variable backsweep angle11 Sep 2025US 2025/0283478 A1Carrier Corporation
- Fan with adjustable blade structures8 May 2025US 2025/0146506 A1Microsoft Technology Licensing, LLC
- Secondary flow guide vane of a turbomachine and turbomachine provided therewith1 May 2025US 2025/0137380 A1Safran Aircraft Engines
- Unducted rectifier for a turbomachine, turbomachine module and aircraft turbomachine15 Aug 2024US 2024/0271541 A1Safran Aircraft Engines
Most cited
By later US patents
- Flexible impeller for a vacuum cleaner50US 5,584,656 AThe Scott Fetzer Company · 1996
- Method and apparatus for aeration using flexible blade impeller15US 5,993,158 ADBS Manufacturing, Inc. · 1999
- Flexible impeller with overmolded hub13US 5,655,884 AThe Scott Fetzer Company · 1997
- Fan impeller structure and manufacturing method thereof10US 9,109,605 B2Asia Vital Components Co., Ltd. · 2015
- Dry-pit submersible pump having a fan and a torque-relieving mechanism8US 6,079,958 ARoper Holdings, Inc. · 2000