Gas turbine system
US-11199135-B2 · Dec 14, 2021 · US
Blades having a closed internal cavity containing a cooling medium, e.g. sodium
Blades having a closed internal cavity containing a cooling medium, e.g. sodium · 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 | F01D5/181 |
| Official title | {Blades having a closed internal cavity containing a cooling medium, e.g. sodium} |
| Display label | Blades having a closed internal cavity containing a cooling medium, e.g. sodium |
| Total patents | 81 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 10 |
| 2017 | 9 |
| 2018 | 10 |
| 2019 | 11 |
| 2020 | 8 |
| 2021 | 6 |
| 2022 | 6 |
| 2023 | 8 |
| 2024 | 4 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Segment for a turbine rotor stage
US-2021372285-A1 · Dec 2, 2021 · US
Cooling assembly for a turbine assembly
US-2021355832-A1 · Nov 18, 2021 · US
Gas turbine engine flowpath component including vectored cooling flow holes
US-2021172335-A1 · Jun 10, 2021 · US
Ceramic matrix composite component cooling
US-10975701-B2 · Apr 13, 2021 · US
Adaptive cover for cooling pathway by additive manufacture
US-10927680-B2 · Feb 23, 2021 · US
Blade/vane cooling passages
US-10871074-B2 · Dec 22, 2020 · US
Apparatus and method for selective bonding to form hollow components
US-10858945-B2 · Dec 8, 2020 · US
Turbine engine airfoil with cooling
US-10808547-B2 · Oct 20, 2020 · US
Blade/vane cooling passages
US-2020277858-A1 · Sep 3, 2020 · US
Turbine and brayton cycle including same
US-2020263552-A1 · Aug 20, 2020 · US
Gas turbine blade and manufacturing method
US-10669858-B2 · Jun 2, 2020 · US
Airfoil with baffle having flange ring affixed to platform
US-2020149404-A1 · May 14, 2020 · US
Heat pipe temperature management system for wheels and buckets in a turbomachine
US-10598094-B2 · Mar 24, 2020 · US
Coupon for hot gas path component having manufacturing assist features
US-10502058-B2 · Dec 10, 2019 · US
Gas turbine system
US-2019323432-A1 · Oct 24, 2019 · US
Plate for metering flow
US-10436113-B2 · Oct 8, 2019 · US
Hybrid airfoil cooling
US-10428660-B2 · Oct 1, 2019 · US
Heat pipe in turbine engine rotor
US-10428687-B2 · Oct 1, 2019 · US
Ceramic Matrix Composite Component Cooling
US-2019242263-A1 · Aug 8, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01D5/181?
- CPC F01D5/181 is the Cooperative Patent Classification code for “Blades having a closed internal cavity containing a cooling medium, e.g. sodium.”
- How many patents are filed under CPC F01D5/181 (Blades having a closed internal cavity containing a cooling medium, e.g. sodium)?
- Our database includes 81 publications tagged with this CPC code.
- Is patent activity under CPC F01D5/181 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).