F05B 2240/374
Auxiliary rotors attached to blades of main rotor
F05B2240/374 (Auxiliary rotors attached to blades of main rotor) appears on 17 US grants and 28 published applications in this corpus.
Search patents in F05B- Granted patents
- 17
- Published applications
- 28
- Assignees
- 11
- Inventors
- 35
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 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 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 2 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 2 | 4 |
| 2014 | 0 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 3 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 2 |
| 2020 | 0 | 0 |
| 2021 | 1 | 3 |
| 2022 | 0 | 1 |
| 2023 | 2 | 5 |
| 2024 | 2 | 0 |
| 2025 | 1 | 3 |
By publication year. Applications have been published since 2001.
Recent patents
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- Solar Wind Turbine with Lever Assist via Compounding Mechanical Advantage8 May 2025US 2025/0146472 A1
- Turbine with secondary rotors30 Jan 2025US 2025/0035082 A1Equinox Ocean Turbines B.V.
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Most cited
By later US patents
- Wind turbine with sail extensions16US 8,258,645 B22012
- Wind energy conversion apparatus15US 6,641,367 B1Aerolift Patents B.V. · 2003
- Wind machine with electric generators and secondary rotors located on rotating vertical blades8US 5,151,610 A1992
- Method of attaching a tip extension to a wind turbine blade3US 10,927,809 B2Vestas Wind Systems A/S · 2021
- Multistage vertical axis wind turbine3US 11,655,798 B22023