Gas turbine engine airfoil
US-2016363128-A1 · Dec 15, 2016 · US
Blade shapes
Blade shapes · 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 | F04D29/544 |
| Official title | {Blade shapes} |
| Display label | Blade shapes |
| Total patents | 687 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 33 |
| 2016 | 49 |
| 2017 | 56 |
| 2018 | 104 |
| 2019 | 94 |
| 2020 | 100 |
| 2021 | 52 |
| 2022 | 60 |
| 2023 | 52 |
| 2024 | 48 |
| 2025 | 33 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Gas turbine engine airfoil
US-2016348691-A1 · Dec 1, 2016 · US
Compressor airfoil with compound leading edge profile
US-2016348692-A1 · Dec 1, 2016 · US
Continuous-flow machine with at least one guide vane ring
US-9506360-B2 · Nov 29, 2016 · US
Gas turbine engine airfoil
US-2016341217-A1 · Nov 24, 2016 · US
Gas turbine engine airfoil
US-2016341211-A1 · Nov 24, 2016 · US
Blower and outdoor unit of air conditioner comprising same
US-2016305452-A1 · Oct 20, 2016 · US
Vacuum pump
US-9470235-B2 · Oct 18, 2016 · US
Gas turbine diffuser and methods of assembling the same
US-2016298646-A1 · Oct 13, 2016 · US
Modal noise reduction for gas turbine engine
US-2016298651-A1 · Oct 13, 2016 · US
Turbomachine
US-9453423-B2 · Sep 27, 2016 · US
Turbomachine part with a non-axisymmetric surface
US-2016245299-A1 · Aug 25, 2016 · US
Gas turbine axial compressor
US-2016215788-A1 · Jul 28, 2016 · US
Turbine engine guide vane
US-2016194962-A1 · Jul 7, 2016 · US
Vacuum Pump
US-2016160877-A1 · Jun 9, 2016 · US
Gas turbine engine stator vane asymmetry
US-2016160665-A1 · Jun 9, 2016 · US
Alternating Vane Asymmetry
US-2016146040-A1 · May 26, 2016 · US
Vortex generators for generating vortices upstream of a cascade of compressor blades
US-9334878-B2 · May 10, 2016 · US
Multi-piece turbine airfoil
US-2016115801-A1 · Apr 28, 2016 · US
Blading
US-9316103-B2 · Apr 19, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D29/544?
- CPC F04D29/544 is the Cooperative Patent Classification code for “Blade shapes.”
- How many patents are filed under CPC F04D29/544 (Blade shapes)?
- Our database includes 687 publications tagged with this CPC code.
- Is patent activity under CPC F04D29/544 growing?
- Publication counts under this code: 48 in 2024 vs 33 in 2025 (latest complete years).