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 | F02D41/021 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 960 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 91 |
| 2016 | 99 |
| 2017 | 128 |
| 2018 | 116 |
| 2019 | 118 |
| 2020 | 94 |
| 2021 | 90 |
| 2022 | 79 |
| 2023 | 51 |
| 2024 | 40 |
| 2025 | 44 |
| 2026 | 10 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fuel selection method and related system for a mobile asset
US-2015377153-A1 · Dec 31, 2015 · US
Method for operating an internal combustion engine
US-2015369159-A1 · Dec 24, 2015 · US
Vehicle drive control device
US-2015369149-A1 · Dec 24, 2015 · US
System and method of DPF passive enhancement through powertrain torque-speed management
US-9194318-B2 · Nov 24, 2015 · US
Methods and systems to control an engine of a transport refrigeration unit
US-2015314670-A1 · Nov 5, 2015 · US
Hybrid work machine
US-2015315766-A1 · Nov 5, 2015 · US
Method for estimating grade and rolling direction
US-9168925-B2 · Oct 27, 2015 · US
Control device of internal combustion engine, work machine and control method of internal combustion engine
US-2015300270-A1 · Oct 22, 2015 · US
Electronic throttle control
US-9162573-B2 · Oct 20, 2015 · US
Fuel selection method and related system for a mobile asset
US-9157385-B2 · Oct 13, 2015 · US
Control system and method
US-9151232-B2 · Oct 6, 2015 · US
Vehicle equipped with a hydraulically-operated device
US-2015275798-A1 · Oct 1, 2015 · US
Engine control device
US-9127439-B2 · Sep 8, 2015 · US
Hydraulic excavator
US-9121158-B2 · Sep 1, 2015 · US
Regulation of concentration/fraction of substances in an exhaust stream
US-2015239453-A1 · Aug 27, 2015 · US
Method and device for controlling an internal combustion engine
US-9114801-B2 · Aug 25, 2015 · US
Method and system for controlling power distribution
US-9108487-B2 · Aug 18, 2015 · US
Control device of internal combustion engine
US-2015226137-A1 · Aug 13, 2015 · US
Engine electrical load shed control
US-2015225089-A1 · Aug 13, 2015 · US
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02D41/021?
- CPC F02D41/021 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F02D41/021 (Mechanical Engineering)?
- Our database includes 960 publications tagged with this CPC code.
- Is patent activity under CPC F02D41/021 growing?
- Publication counts under this code: 40 in 2024 vs 44 in 2025 (latest complete years).