Windmill and negative-g oil system for geared turbofan engines
US-2016376988-A1 · Dec 29, 2016 · US
Mechanical Engineering
Mechanical Engineering · 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 | F02K3/04 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 588 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 34 |
| 2016 | 67 |
| 2017 | 39 |
| 2018 | 65 |
| 2019 | 56 |
| 2020 | 82 |
| 2021 | 55 |
| 2022 | 47 |
| 2023 | 48 |
| 2024 | 49 |
| 2025 | 41 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Remote communication and powered sensing/control/identification devices
US-2016369650-A1 · Dec 22, 2016 · US
Electromagnetic sensing of components in electromagnetic communication and method
US-2016370256-A1 · Dec 22, 2016 · US
Metal ceramic composite for electromagnetic signal transparent materials
US-2016373838-A1 · Dec 22, 2016 · US
Multi-stage sensing/control/identification device having protected communication and remote power
US-2016373837-A1 · Dec 22, 2016 · US
Remote communication and powered sensing/control/identification devices using high temperature compatible semiconductor materials
US-2016371897-A1 · Dec 22, 2016 · US
Turbofan bypass air cooled oil cooler fairings
US-2016348585-A1 · Dec 1, 2016 · US
Geared turbofan engine gearbox arrangement
US-9500126-B2 · Nov 22, 2016 · US
Variable area fan nozzle actuation system
US-2016333822-A1 · Nov 17, 2016 · US
Variable area fan nozzle with wall thickness distribution
US-9429103-B2 · Aug 30, 2016 · US
Gas turbine exhaust having reduced jet noise
US-9416752-B2 · Aug 16, 2016 · US
Turbo-compressor with geared turbofan
US-2016222814-A1 · Aug 4, 2016 · US
Methods and apparatus to vary reverse thrust of aircraft engines
US-2016201601-A1 · Jul 14, 2016 · US
High performance convergent divergent nozzle
US-2016194968-A1 · Jul 7, 2016 · US
Clutch assembly with integrated surface cooling
US-2016178016-A1 · Jun 23, 2016 · US
Gas turbine engine and method of assembling the same
US-2016146155-A1 · May 26, 2016 · US
Gas turbine engine airfoil total chord relative to span
US-9347323-B2 · May 24, 2016 · US
Gas turbine engine
US-2016130959-A1 · May 12, 2016 · US
Low noise turbine for geared turbofan engine
US-2016130949-A1 · May 12, 2016 · US
Gas Turbine Engine Structural Guide Vanes
US-2016130958-A1 · May 12, 2016 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02K3/04?
- CPC F02K3/04 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F02K3/04 (Mechanical Engineering)?
- Our database includes 588 publications tagged with this CPC code.
- Is patent activity under CPC F02K3/04 growing?
- Publication counts under this code: 49 in 2024 vs 41 in 2025 (latest complete years).