F03D 7/0236
By changing the active surface of the wind engaging parts
Official title: {by changing the active surface of the wind engaging parts, e.g. reefing or furling}
F03D7/0236 (By changing the active surface of the wind engaging parts) appears on 106 US grants and 132 published applications in this corpus.
Search patents in F03D- Granted patents
- 106
- Published applications
- 132
- Assignees
- 44
- Inventors
- 192
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 3 |
| 2004 | 1 | 2 |
| 2005 | 2 | 7 |
| 2006 | 3 | 3 |
| 2007 | 2 | 5 |
| 2008 | 5 | 0 |
| 2009 | 2 | 3 |
| 2010 | 1 | 17 |
| 2011 | 2 | 11 |
| 2012 | 8 | 4 |
| 2013 | 4 | 3 |
| 2014 | 8 | 5 |
| 2015 | 2 | 7 |
| 2016 | 4 | 6 |
| 2017 | 4 | 7 |
| 2018 | 2 | 5 |
| 2019 | 8 | 4 |
| 2020 | 4 | 2 |
| 2021 | 4 | 13 |
| 2022 | 12 | 8 |
| 2023 | 5 | 5 |
| 2024 | 5 | 8 |
| 2025 | 0 | 3 |
| 2026 | 7 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Damping assembly for wind turbines12 May 2026US 12,624,678 B2Windsun Pte Ltd
- Folding blade wind turbine17 Mar 2026US 12,577,936 B2Natural Power Concepts, Inc.
- Rotatable blade apparatus with individually adjustable blades10 Mar 2026US 12,571,370 B2Energyield LLC
- Wind turbine blade and wind turbine17 Feb 2026US 12,553,413 B2Siemens Gamesa Renewable Energy A/S
- Sound vibration and friction limiting turbine generator gyroscope method and apparatus10 Feb 2026US 12,546,287 B2Airborne Motorworks Inc.
- Wind turbine blade, wind turbine and method for operating a wind turbine5 Mar 2026US 2026/0063102 A1General Electric Renovables Espana, S.L.
- A method for reducing rotor imbalance in a wind turbine4 Dec 2025US 2025/0369420 A1Vestas Wind Systems A/S
- Damping assembly for wind turbines24 Jul 2025US 2025/0237192 A1Windsun Pte Ltd
- Wind turbine with blades including openings for controlling rotational speed30 Jan 2025US 2025/0035083 A1International Business Machines Corporation
- Folding blade wind turbine7 Nov 2024US 2024/0369038 A1Natural Power Concepts, Inc.
Most cited
By later US patents
- Variable diameter wind turbine rotor blades72US 6,972,498 B2General Electric Company · 2005
- Wind power generator and control therefore69US 4,316,096 A1982
- Methods and apparatus for advanced wind turbine design68US 7,436,086 B22008
- Retractable rotor blades for power generating wind and ocean current turbines and means for operating below set rotor torque limits60US 6,726,439 B2Clipper Windpower Technology, Inc. · 2004
- Windmill blade and apparatus for generating power using the blade52US 6,984,110 B22006