F05B 2270/604
Hydraulic actuators
Official title: hydraulic actuators
F05B2270/604 (Hydraulic actuators) appears on 72 US grants and 101 published applications in this corpus.
Search patents in F05B- Granted patents
- 72
- Published applications
- 101
- Assignees
- 41
- Inventors
- 207
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 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 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 2 |
| 2009 | 2 | 3 |
| 2010 | 0 | 9 |
| 2011 | 3 | 4 |
| 2012 | 4 | 11 |
| 2013 | 3 | 9 |
| 2014 | 4 | 7 |
| 2015 | 2 | 2 |
| 2016 | 2 | 4 |
| 2017 | 3 | 1 |
| 2018 | 2 | 6 |
| 2019 | 6 | 8 |
| 2020 | 7 | 10 |
| 2021 | 11 | 7 |
| 2022 | 5 | 4 |
| 2023 | 5 | 2 |
| 2024 | 3 | 3 |
| 2025 | 1 | 3 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydraulic device for a pitch system, a pitch system and wind turbine17 Mar 2026US 12,577,934 B2HAWE Hydraulik SE
- Blade for a wind turbine comprising means for retaining a spoiler at a retracted position27 Jan 2026US 12,535,053 B2Siemens Gamesa Renewable Energy A/S
- Wind turbine rotor blade pitch control for tower fatigue reduction20 Jan 2026US 12,529,354 B2Vestas Wind Systems A/S
- Method for controlling a wind turbine during yaw operation26 Aug 2025US 12,398,693 B2GE Vernova Renovables Espana, S.L.
- Method of controlling a wind turbine and controller for a wind turbine1 Oct 2024US 12,104,575 B2Siemens Gamesa Renewable Energy A/S
- Controlling the pitch angle of a rotor blade of a wind turbine16 Jul 2026US 2026/0201864 A1Vestas Wind Systems A/S
- Wind turbine rotor blade pitch control for tower fatigue reduction1 Jan 2026US 2026/0002514 A1Vestas Wind Systems A/S
- Piston Accumulator10 Jul 2025US 2025/0223979 A1Hydac Technology GmbH
- Hydraulic device for a pitch system, a pitch system and wind turbine3 Jul 2025US 2025/0215852 A1HAWE Hydraulik SE
- Method for controlling a wind turbine during yaw operation9 Jan 2025US 2025/0012251 A1General Electric Renovables Espana, S.L.
Most cited
By later US patents
- Method and system for wind turbine blade movement51US 7,355,294 B2General Electric Company · 2008
- Wind turbine blade pitch control system35US 4,348,155 AUnited Technologies Corporation · 1982
- Wind turbine pitch control hub24US 4,792,281 ANorthern Power Systems, Inc. · 1988
- Turbine apparatus and method24US 6,682,302 B22004
- Turbine apparatus and method19US 6,929,450 B22005