F04D 29/666
By means of rotor construction or layout
Official title: {by means of rotor construction or layout, e.g. unequal distribution of blades or vanes}
F04D29/666 (By means of rotor construction or layout) appears on 408 US grants and 514 published applications in this corpus.
Search patents in F04D- Granted patents
- 408
- Published applications
- 514
- Assignees
- 208
- Inventors
- 1,087
- Latest grant
- 25 Aug 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 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 5 | 5 |
| 2003 | 3 | 5 |
| 2004 | 4 | 9 |
| 2005 | 3 | 6 |
| 2006 | 6 | 8 |
| 2007 | 6 | 13 |
| 2008 | 1 | 10 |
| 2009 | 3 | 18 |
| 2010 | 10 | 12 |
| 2011 | 5 | 10 |
| 2012 | 14 | 17 |
| 2013 | 8 | 20 |
| 2014 | 9 | 29 |
| 2015 | 9 | 25 |
| 2016 | 16 | 33 |
| 2017 | 26 | 30 |
| 2018 | 20 | 35 |
| 2019 | 36 | 49 |
| 2020 | 46 | 31 |
| 2021 | 30 | 31 |
| 2022 | 39 | 22 |
| 2023 | 21 | 22 |
| 2024 | 18 | 17 |
| 2025 | 28 | 33 |
| 2026 | 16 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Fan blade and neck fan21 Jul 2026US 12,687,177 B2Shenzhen Shiwu Technology Co., Ltd
- Gas turbine engine with acoustic spacing of the fan blades and outlet guide vanes17 Sep 2026US 2026/0275938 A1General Electric Company
- Gas turbine engine with acoustic spacing of the fan blades and outlet guide vanes3 Sep 2026US 2026/0258770 A1General Electric Company
- Centrifugal blower, impeller for centrifugal blower, and vehicle seat ventilation system3 Sep 2026US 2026/0258816 A1Gentherm Incorporated
- Fan Impeller Mid-Segment, Cross-Flow Fan Impeller and Air Conditioner27 Aug 2026US 2026/0251160 A1Gree Electric Appliances, Inc. of Zhuhai
- Gas turbine engine with forward swept outlet guide vanes30 Jul 2026US 2026/0218668 A1General Electric Company
Most cited
By later US patents
- Low-noise, high-efficiency fan assembly combining unequal blade spacing angles and unequal blade setting angles66US 5,681,145 AITT Automotive Electrical Systems, Inc. · 1997
- Wheel or rotor with a plurality of blades61US 4,253,800 AHitachi, Ltd. · 1981
- Detuned fan blade apparatus and method54US 6,042,338 AAlliedSignal Inc. · 2000
- Frequency-mistuned light-weight turbomachinery blade rows for increased flutter stability53US 6,471,482 B2United Technologies Corporation · 2002
- Stator vane assembly for a turbomachine51US 7,118,331 B2ROLLS-ROYCE plc · 2006