Counter-rotating fan and image capturing device
US-11388319-B2 · Jul 12, 2022 · US
with non identical blades
with non identical blades · 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 | F04D29/327 |
| Official title | {with non identical blades} |
| Display label | with non identical blades |
| Total patents | 84 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 6 |
| 2018 | 13 |
| 2019 | 13 |
| 2020 | 19 |
| 2021 | 5 |
| 2022 | 7 |
| 2023 | 5 |
| 2024 | 6 |
| 2025 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Dimensioning of the skeleton angle of the trailing edge of the arms crossing the by-pass flow of a turbofan
US-11221020-B2 · Jan 11, 2022 · US
Counter-rotating fan and image capturing device
US-2021274078-A1 · Sep 2, 2021 · US
Fan unit and cleaner having the same
US-11089931-B2 · Aug 17, 2021 · US
Fan
US-2021215160-A1 · Jul 15, 2021 · US
Fan rotor with flow induced resonance control
US-11035385-B2 · Jun 15, 2021 · US
Gas turbine engine
US-2021156317-A1 · May 27, 2021 · US
Compressor rotor for supersonic flutter and/or resonant stress mitigation
US-2020392968-A1 · Dec 17, 2020 · US
Method for manufacturing a turbomachine fan having a reduced noise level at multiple rotational frequencies of said turbomachine
US-10865645-B2 · Dec 15, 2020 · US
Mistuned rotor for gas turbine engine
US-10865806-B2 · Dec 15, 2020 · US
Mistuned fan
US-10865807-B2 · Dec 15, 2020 · US
Fan
US-10851655-B2 · Dec 1, 2020 · US
Mistuned fan for gas turbine engine
US-10837459-B2 · Nov 17, 2020 · US
Fan rotor with flow induced resonance control
US-10823203-B2 · Nov 3, 2020 · US
Gas turbine engine with short inlet and mistuned fan blades
US-10823192-B2 · Nov 3, 2020 · US
Fan
US-10724536-B2 · Jul 28, 2020 · US
Serial axial flow fan
US-10697466-B2 · Jun 30, 2020 · US
Heat dissipation fan
US-2020191157-A1 · Jun 18, 2020 · US
Compressor rotor for supersonic flutter and/or resonant stress mitigation
US-10670041-B2 · Jun 2, 2020 · US
Fan rotor with flow induced resonance control
US-2020149554-A1 · May 14, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D29/327?
- CPC F04D29/327 is the Cooperative Patent Classification code for “with non identical blades.”
- How many patents are filed under CPC F04D29/327 (with non identical blades)?
- Our database includes 84 publications tagged with this CPC code.
- Is patent activity under CPC F04D29/327 growing?
- Publication counts under this code: 6 in 2024 vs 8 in 2025 (latest complete years).