Engine component with porous trench
US-10508551-B2 · Dec 17, 2019 · US
cooling by injection
cooling by injection · 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 | F04D29/5846 |
| Official title | {cooling by injection} |
| Display label | cooling by injection |
| Total patents | 153 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 12 |
| 2017 | 14 |
| 2018 | 13 |
| 2019 | 24 |
| 2020 | 14 |
| 2021 | 9 |
| 2022 | 12 |
| 2023 | 15 |
| 2024 | 18 |
| 2025 | 12 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compressor unit for cryocooler and cryopump system
US-2019360496-A1 · Nov 28, 2019 · US
Method for injecting water into a multistage axial compressor of a gas turbine
US-10480404-B2 · Nov 19, 2019 · US
Telescoping bore basket for gas turbine engine
US-2019284999-A1 · Sep 19, 2019 · US
Method and apparatus for active clearance control
US-10393149-B2 · Aug 27, 2019 · US
Endwall cooling system
US-10370983-B2 · Aug 6, 2019 · US
Gas compression process with introduction of excess refrigerant at compressor inlet
US-10344768-B2 · Jul 9, 2019 · US
Air Compressor
US-2019136843-A1 · May 9, 2019 · US
Fibrous media drift eliminator
US-10260421-B2 · Apr 16, 2019 · US
Trench cooling of airfoil structures
US-10221693-B2 · Mar 5, 2019 · US
Centrifugal compressor with fluid injector diffuser
US-10197064-B2 · Feb 5, 2019 · US
Annular injection apparatus for wet compression
US-2019024669-A1 · Jan 24, 2019 · US
Supplemental cooling of cabin air compressor motor
US-10174767-B2 · Jan 8, 2019 · US
Cooling system for a turbine engine
US-2018371999-A1 · Dec 27, 2018 · US
Controlling a wet compression system
US-10156241-B2 · Dec 18, 2018 · US
Gas turbine engine component having engineered vascular structure
US-2018347373-A1 · Dec 6, 2018 · US
Gas turbine engine with a cooled compressor
US-2018328177-A1 · Nov 15, 2018 · US
Controlling a wet compression system
US-2018313357-A1 · Nov 1, 2018 · US
Turbomachine with an adaptive sealing appliance
US-2018306198-A1 · Oct 25, 2018 · US
Fibrous media drift eliminator
US-2018266321-A1 · Sep 20, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D29/5846?
- CPC F04D29/5846 is the Cooperative Patent Classification code for “cooling by injection.”
- How many patents are filed under CPC F04D29/5846 (cooling by injection)?
- Our database includes 153 publications tagged with this CPC code.
- Is patent activity under CPC F04D29/5846 growing?
- Publication counts under this code: 18 in 2024 vs 12 in 2025 (latest complete years).