Cooled variable area nozzle for an aircraft engine
US-12578092-B2 · Mar 17, 2026 · US
Infrared radiation suppressors
Infrared radiation suppressors · 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 | F02K1/825 |
| Official title | {Infrared radiation suppressors} |
| Display label | Infrared radiation suppressors |
| Total patents | 50 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 5 |
| 2017 | 1 |
| 2018 | 9 |
| 2019 | 9 |
| 2020 | 8 |
| 2021 | 6 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compact infrared suppressors with ring vanes for gas turbine engines
US-12421914-B2 · Sep 23, 2025 · US
Cooled variable area nozzle for an aircraft engine
US-2025230930-A1 · Jul 17, 2025 · US
Compact infrared suppressors with ring vanes for gas turbine engines
US-2025101932-A1 · Mar 27, 2025 · US
Compact infrared suppressors with ring vanes for gas turbine engines
US-12180910-B1 · Dec 31, 2024 · US
Exhaust systems having adjustable nozzles and related methods
US-2024140611-A1 · May 2, 2024 · US
Passive infrared reduction device
US-11725609-B2 · Aug 15, 2023 · US
Multistage infrared suppression exhaust system
US-11608189-B2 · Mar 21, 2023 · US
Multistage infrared suppression exhaust system
US-2022048640-A1 · Feb 17, 2022 · US
Passive infrared reduction device
US-2021254582-A1 · Aug 19, 2021 · US
Gas turbine exhaust cooling system
US-11067035-B2 · Jul 20, 2021 · US
Heat shield for signature suppression system
US-10974840-B2 · Apr 13, 2021 · US
Method and apparatus for variable supplemental airflow to cool aircraft components
US-10934937-B2 · Mar 2, 2021 · US
Deflection seal system
US-10927957-B2 · Feb 23, 2021 · US
Use of infrared transparent airframe materials for passive cooling of internal components
US-10894606-B2 · Jan 19, 2021 · US
Infrared suppression system in a gas turbine engine
US-10718229-B2 · Jul 21, 2020 · US
Heat shield for signature suppression system
US-2020172258-A1 · Jun 4, 2020 · US
Gas turbine exhaust assembly
US-10612421-B2 · Apr 7, 2020 · US
Serpentine baffle for a gas turbine engine exhaust duct
US-10605200-B2 · Mar 31, 2020 · US
Engine Exhaust Suppressor
US-2020070994-A1 · Mar 5, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02K1/825?
- CPC F02K1/825 is the Cooperative Patent Classification code for “Infrared radiation suppressors.”
- How many patents are filed under CPC F02K1/825 (Infrared radiation suppressors)?
- Our database includes 50 publications tagged with this CPC code.
- Is patent activity under CPC F02K1/825 growing?
- Publication counts under this code: 2 in 2024 vs 3 in 2025 (latest complete years).