Ducted thrust producing system with asynchronous fan blade pitching
US-9835037-B2 · Dec 5, 2017 · US
Rotors
Rotors · 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 | F05D2240/20 |
| Official title | Rotors |
| Display label | Rotors |
| Total patents | 331 |
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 | 7 |
| 2016 | 46 |
| 2017 | 20 |
| 2018 | 49 |
| 2019 | 49 |
| 2020 | 59 |
| 2021 | 26 |
| 2022 | 27 |
| 2023 | 13 |
| 2024 | 21 |
| 2025 | 10 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Friction damper
US-2017342840-A1 · Nov 30, 2017 · US
Fan hub design
US-9810076-B2 · Nov 7, 2017 · US
Turbine Blade Centroid Shifting Method and System
US-2017241269-A1 · Aug 24, 2017 · US
Surface treatment of turbomachinery
US-2017175528-A1 · Jun 22, 2017 · US
Turbocharger turbine containment structure
US-9650913-B2 · May 16, 2017 · US
Safety device for a bearing arrangement of a rotor of a turbomachine
US-9540946-B2 · Jan 10, 2017 · US
Radial tie-bolt support spring
US-2016376889-A1 · Dec 29, 2016 · US
Fuel pump
US-2016369818-A1 · Dec 22, 2016 · US
Ducted thrust producing system with asynchronous fan blade pitching
US-2016369639-A1 · Dec 22, 2016 · US
Turbine engine with a turbo-compressor
US-2016356244-A1 · Dec 8, 2016 · US
Combined butterfly/ball valve
US-2016333795-A1 · Nov 17, 2016 · US
Rotor damper
US-2016298459-A1 · Oct 13, 2016 · US
Rotor damper
US-2016298458-A1 · Oct 13, 2016 · US
Rotor damper
US-2016298460-A1 · Oct 13, 2016 · US
Turbocharger wheel and method of balancing the same
US-2016265359-A1 · Sep 15, 2016 · US
Turbocharger Turbine Containment Structure
US-2016265382-A1 · Sep 15, 2016 · US
Nanocellular foam damper
US-2016251979-A1 · Sep 1, 2016 · US
Hybrid metal and composite spool for rotating machinery
US-2016245086-A1 · Aug 25, 2016 · US
Forward-swept impellers and gas turbine engines employing the same
US-2016238018-A1 · Aug 18, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F05D2240/20?
- CPC F05D2240/20 is the Cooperative Patent Classification code for “Rotors.”
- How many patents are filed under CPC F05D2240/20 (Rotors)?
- Our database includes 331 publications tagged with this CPC code.
- Is patent activity under CPC F05D2240/20 growing?
- Publication counts under this code: 21 in 2024 vs 10 in 2025 (latest complete years).