F03D 7/0228
Of the blade tips only
Official title: {of the blade tips only}
F03D7/0228 (Of the blade tips only) appears on 37 US grants and 53 published applications in this corpus.
Search patents in F03D- Granted patents
- 37
- Published applications
- 53
- Assignees
- 24
- Inventors
- 101
- Latest grant
- 25 Mar 2025
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 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 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 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 4 |
| 2010 | 2 | 4 |
| 2011 | 2 | 2 |
| 2012 | 2 | 14 |
| 2013 | 1 | 1 |
| 2014 | 3 | 4 |
| 2015 | 2 | 4 |
| 2016 | 4 | 4 |
| 2017 | 4 | 3 |
| 2018 | 2 | 2 |
| 2019 | 2 | 5 |
| 2020 | 2 | 2 |
| 2021 | 3 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Pitch controlled wind turbine with blade connecting members and split blades25 Mar 2025US 12,258,935 B2Vestas Wind Systems A/S
- Method and arrangement to detect an oil leakage between sections of a hydraulic cylinder10 Jan 2023US 11,549,528 B2Siemens Gamesa Renewable Energy A/S
- Aero-elastically tailored wind blade tip joint8 Mar 2022US 11,268,491 B2General Electric Company
- Systems and methods for pitching of rotor blades14 Sep 2021US 11,118,567 B2General Electric Company
- Flow control arrangement for a wind turbine rotor blade3 Aug 2021US 11,078,885 B2Siemens Gamesa Renewable Energy A/S
- A pitch controlled wind turbine with blade connecting members and split blades16 May 2024US 2024/0159212 A1Vestas Wind Systems A/S
- Systems and methods for pitching of rotor blades31 Dec 2020US 2020/0408193 A1General Electric Company
- Method and arrangement to detect an oil leakage between sections of a hydraulic cylinder27 Feb 2020US 2020/0063764 A1Siemens Gamesa Renewable Energy A/S
- Lifting surfaces and associated method24 Oct 2019US 2019/0322354 A1Airbus Operations GmbH
- Root segment for a segmented rotor blade of a wind turbine installation and a segmented rotor blade with the root segment24 Oct 2019US 2019/0323480 A1YOUWINENERGY GmbH
Most cited
By later US patents
- Wind turbine123US 4,297,076 ALockheed Corporation · 1981
- Large vertical-axis variable-pitch wind turbine91US 6,320,273 B12001
- Methods and apparatus for twist bend coupled (TCB) wind turbine blades35US 7,118,338 B2General Electric Company · 2006
- System and method for reducing rotor loads in a wind turbine upon detection of blade-pitch failure and loss of counter-torque32US 7,944,067 B2General Electric Company · 2011
- Propeller type windmill for power generation27US 6,752,595 B2Hitachi Zosen Corporation · 2004