Pre-bent wind turbine blade optimised for aeroelastic stability
US-2025283449-A1 · Sep 11, 2025 · US
curved
curved · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F05B2250/71 |
| Official title | curved |
| Display label | curved |
| Total patents | 40 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 9 |
| 2020 | 5 |
| 2021 | 7 |
| 2022 | 3 |
| 2023 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydropower device combining lift and drag effects
US-2025243838-A1 · Jul 31, 2025 · US
Relating to wind turbine blade manufacture
US-11761422-B2 · Sep 19, 2023 · US
Damper position-limiting device, tower and wind turbine
US-11698056-B2 · Jul 11, 2023 · US
Ducted fan with fan casing defining an over-rotor cavity
US-11286955-B2 · Mar 29, 2022 · US
Segmented rotor blade having maximized overall pre-bend via an increased pre-bend in a blade tip segment thereof
US-2022065218-A1 · Mar 3, 2022 · US
Improvements relating to wind turbine blade manufacture
US-2022034293-A1 · Feb 3, 2022 · US
Serrated trailing edge panel for a wind turbine blade
US-11204015-B2 · Dec 21, 2021 · US
Rotor blade
US-11162472-B2 · Nov 2, 2021 · US
Damper position-limiting device, tower and wind turbine
US-2021332798-A1 · Oct 28, 2021 · US
Serrated trailing edge panel for a wind turbine blade
US-11053911-B2 · Jul 6, 2021 · US
Ducted Fan with Fan Casing Defining an Over-Rotor Cavity
US-2021108653-A1 · Apr 15, 2021 · US
Methods for manufacturing wind turbine rotor blade panels having printed grid structures
US-10913216-B2 · Feb 9, 2021 · US
Bushing for a wind turbine rotor blade, flange insert, wind turbine rotor blade and wind turbine
US-10883472-B2 · Jan 5, 2021 · US
Turbomachine guide vanes with improved vane profile
US-10844735-B2 · Nov 24, 2020 · US
Offset perpendicular axis turbine
US-10844835-B2 · Nov 24, 2020 · US
Serrated trailing edge panel for a wind turbine blade
US-2020182219-A1 · Jun 11, 2020 · US
Blower comprising impeller and motor
US-10677258-B2 · Jun 9, 2020 · US
Serrated trailing edge panel for a wind turbine blade
US-2020116121-A1 · Apr 16, 2020 · US
Turbine housing for turbocharger with linear A/R distribution and nonlinear area distribution
US-10513936-B2 · Dec 24, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F05B2250/71?
- CPC F05B2250/71 is the Cooperative Patent Classification code for “curved.”
- How many patents are filed under CPC F05B2250/71 (curved)?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC F05B2250/71 growing?
- Publication counts under this code: 2 in 2023 vs 2 in 2025 (latest complete years).