Methods and apparatus for mitigating fuel in oil
US-2024409080-A1 · Dec 12, 2024 · 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 | F02D41/04 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 786 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 96 |
| 2016 | 97 |
| 2017 | 88 |
| 2018 | 104 |
| 2019 | 119 |
| 2020 | 95 |
| 2021 | 71 |
| 2022 | 59 |
| 2023 | 21 |
| 2024 | 18 |
| 2025 | 15 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Control device for internal combustion engine (as amended)
US-2015369155-A1 · Dec 24, 2015 · US
System and method for preventing stochastic pre-ignition
US-9217386-B2 · Dec 22, 2015 · US
Vehicle torque compensation system
US-2015354486-A1 · Dec 10, 2015 · US
Identification and rejection of asymmetric faults
US-2015354485-A1 · Dec 10, 2015 · US
Motor vehicle with reduced sound emissions
US-9200579-B2 · Dec 1, 2015 · US
Gasoline engine control system and control method for the same
US-9194317-B2 · Nov 24, 2015 · US
Method for determining an imbalance of at least one cylinder
US-2015322880-A1 · Nov 12, 2015 · US
Method and system for binary flow turbine control
US-2015322847-A1 · Nov 12, 2015 · US
Method to reduce fuel consumption when driving a vehicle and switching to higher gear, a computer program for the method, a system enabling the method and a vehicle for it
US-2015321673-A1 · Nov 12, 2015 · US
Exhaust purification system of internal combustion engine
US-9181889-B2 · Nov 10, 2015 · US
Variable valve lift diagnostic techniques based on camshaft speed
US-9175582-B1 · Nov 3, 2015 · US
Method of inferring start-up misfires due to the build-up of ice and melt water in the intake system of a vehicle engine
US-9175619-B2 · Nov 3, 2015 · US
Method and system for controlling engine vacuum production
US-9175626-B2 · Nov 3, 2015 · US
Method and system of controlling exhaust after-treatment apparatus for vehicle
US-2015308363-A1 · Oct 29, 2015 · US
Internal combustion engine and control method thereof
US-2015308367-A1 · Oct 29, 2015 · US
Methods and systems for air fuel ratio control
US-9157388-B2 · Oct 13, 2015 · US
Model predictive control systems and methods for internal combustion engines
US-2015275793-A1 · Oct 1, 2015 · US
System and method for increasing the temperature of a catalyst when an engine is started using model predictive control
US-2015275795-A1 · Oct 1, 2015 · US
Estimation systems and methods with model predictive control
US-2015275794-A1 · Oct 1, 2015 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02D41/04?
- CPC F02D41/04 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F02D41/04 (Mechanical Engineering)?
- Our database includes 786 publications tagged with this CPC code.
- Is patent activity under CPC F02D41/04 growing?
- Publication counts under this code: 18 in 2024 vs 15 in 2025 (latest complete years).