F04D 29/36
Adjustable
Official title: adjustable {(flexible blades F04D29/382)}
F04D29/36 (Adjustable) appears on 338 US grants and 307 published applications in this corpus.
Search patents in F04D- Granted patents
- 338
- Published applications
- 307
- Assignees
- 183
- Inventors
- 564
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 6 | 0 |
| 1986 | 7 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 0 |
| 2002 | 5 | 2 |
| 2003 | 5 | 4 |
| 2004 | 8 | 11 |
| 2005 | 6 | 6 |
| 2006 | 5 | 4 |
| 2007 | 4 | 5 |
| 2008 | 0 | 9 |
| 2009 | 2 | 12 |
| 2010 | 4 | 4 |
| 2011 | 8 | 9 |
| 2012 | 11 | 6 |
| 2013 | 2 | 11 |
| 2014 | 8 | 11 |
| 2015 | 9 | 7 |
| 2016 | 5 | 13 |
| 2017 | 9 | 24 |
| 2018 | 14 | 16 |
| 2019 | 22 | 22 |
| 2020 | 18 | 19 |
| 2021 | 19 | 22 |
| 2022 | 31 | 17 |
| 2023 | 24 | 21 |
| 2024 | 13 | 13 |
| 2025 | 14 | 13 |
| 2026 | 11 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rotatable trunnions for variable pitch blades21 Jul 2026US 12,687,116 B1General Electric Company
- Trunnions having multiple fan blades for use with an aircraft engine5 May 2026US 12,618,416 B1
- Fan blade, fan and fan lamp28 Apr 2026US 12,612,926 B2Opple Lighting Co., Ltd.
- Variable pitch fan of a gas turbine engine14 Apr 2026US 12,601,271 B2General Electric Company
- Ceiling fan with blade hub24 Mar 2026US 12,584,499 B2Hunter Fan Company
- Turbofan engine including a fan actuation system8 Oct 2026US 2026/0309162 A1General Electric Company
- Turbofan engine including a fan actuation system24 Sep 2026US 2026/0286973 A1General Electric Company
- Turbofan engine including a fan actuation system10 Sep 2026US 2026/0266309 A1General Electric Company
- Propulsor assembly for a turbine engine27 Aug 2026US 2026/0251154 A1GE AEROSPACE POLAND sp. z o. o.
- Gas turbine engine20 Aug 2026US 2026/0243199 A1General Electric Company
Most cited
By later US patents
- Fan with collapsible blades, redundant fan system, and related method271US 6,860,713 B2Nidec Corporation · 2005
- Collapsible fan and system and method incorporating same126US 6,972,956 B2Hewlett-Packard Development Company, L. P. · 2005
- Deployable folded propeller assembly for aerial projectiles115US 6,308,632 B12001
- Variable pitch axial fan100US 3,932,054 AWestern Engineering & Mfg. Co. · 1976
- Variable pitch propeller having locking insert83US 5,520,515 ABailsco Blades & Casting, Inc. · 1996