Aircraft powerplant exhaust section with flow diverter
US-2026092578-A1 · Apr 2, 2026 · US
Nozzles having means, e.g. a shield, reducing sound radiation in a specified direction (F02K1/40 takes precedence)
Nozzles having means, e.g. a shield, reducing sound radiation in a specified direction (F02K1/40 takes precedence) · 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 | F02K1/44 |
| Official title | Nozzles having means, e.g. a shield, reducing sound radiation in a specified direction (F02K1/40 takes precedence) |
| Display label | Nozzles having means, e.g. a shield, reducing sound radiation in a specified direction (F02K1/40 takes precedence) |
| Total patents | 59 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 8 |
| 2017 | 1 |
| 2018 | 4 |
| 2019 | 4 |
| 2020 | 6 |
| 2021 | 2 |
| 2022 | 5 |
| 2023 | 4 |
| 2024 | 12 |
| 2025 | 7 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fan case assembly of turbo fan engine
US-12560131-B2 · Feb 24, 2026 · US
Low-frequency acoustic center body
US-12448935-B2 · Oct 21, 2025 · US
Propulsion system for jet noise reduction
US-2025290634-A1 · Sep 18, 2025 · US
Aircraft propulsion system with asymmetric exhaust assembly
US-2025215840-A1 · Jul 3, 2025 · US
Acoustic engine exhaust center body with tapered inner skin
US-2025207542-A1 · Jun 26, 2025 · US
Propulsion system for jet noise reduction
US-12339002-B2 · Jun 24, 2025 · US
Assembly for an exhaust cone of an aircraft turbomachine
US-2025035069-A1 · Jan 30, 2025 · US
Low-frequency acoustic center body
US-2025003374-A1 · Jan 2, 2025 · US
Engine exhaust nozzle with acoustic attenuation
US-12163472-B2 · Dec 10, 2024 · US
Structural and/or acoustic panel of a nacelle of an aircraft propulsion assembly and related manufacturing method
US-2024391206-A1 · Nov 28, 2024 · US
Low-frequency acoustic center body
US-12116955-B2 · Oct 15, 2024 · US
Zoned liner exhaust with buried N-core
US-12110844-B2 · Oct 8, 2024 · US
Supersonic aircraft and method of reducing sonic booms and jet noise
US-12110841-B2 · Oct 8, 2024 · US
Structural and/or acoustic panel of a nacelle of an aircraft propulsion assembly and related manufacturing method
US-12090741-B2 · Sep 17, 2024 · US
Low-frequency acoustic center body
US-12078125-B2 · Sep 3, 2024 · US
Acoustically-treated air ejection nozzle for a nacelle
US-2024253804-A1 · Aug 1, 2024 · US
Fan case assembly of turbo fan engine
US-2024167434-A1 · May 23, 2024 · US
Low-frequency acoustic center body
US-2024159203-A1 · May 16, 2024 · US
Zoned liner exhaust with buried n-core
US-2024159202-A1 · May 16, 2024 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02K1/44?
- CPC F02K1/44 is the Cooperative Patent Classification code for “Nozzles having means, e.g. a shield, reducing sound radiation in a specified direction (F02K1/40 takes precedence).”
- How many patents are filed under CPC F02K1/44 (Nozzles having means, e.g. a shield, reducing sound radiation in a specified direction (F02K1/40 takes precedence))?
- Our database includes 59 publications tagged with this CPC code.
- Is patent activity under CPC F02K1/44 growing?
- Publication counts under this code: 12 in 2024 vs 7 in 2025 (latest complete years).