Engine device
US-2025290473-A1 · Sep 18, 2025 · US
by hot liquids, e.g. lubricants {or cooling water}
by hot liquids, e.g. lubricants {or cooling water} · 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 | F02M31/10 |
| Official title | by hot liquids, e.g. lubricants {or cooling water} |
| Display label | by hot liquids, e.g. lubricants {or cooling water} |
| Total patents | 60 |
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 | 3 |
| 2016 | 9 |
| 2017 | 10 |
| 2018 | 13 |
| 2019 | 2 |
| 2020 | 10 |
| 2021 | 6 |
| 2022 | 2 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Engine device
US-2025290471-A1 · Sep 18, 2025 · US
Engine device
US-2025290476-A1 · Sep 18, 2025 · US
Internal combustion engine with ventilation system for a crankcase
US-12410737-B2 · Sep 9, 2025 · US
Internal combustion engine with ventilation system for a crankcase
US-2025163836-A1 · May 22, 2025 · US
Gas engine power generation system
US-11428194-B2 · Aug 30, 2022 · US
Internal combustion engine provided with a water-based operating liquid feeding system having a heating device
US-11286888-B2 · Mar 29, 2022 · US
Methods and systems for an engine with exhaust gas recirculation
US-11162460-B2 · Nov 2, 2021 · US
Compression ignition engine with supercharger
US-11111865-B2 · Sep 7, 2021 · US
Internal Combustion Engine Provided With a Water-Based Operating Liquid Feeding System Having a Heating Device
US-2021140393-A1 · May 13, 2021 · US
Gas engine power generation system
US-2021095621-A1 · Apr 1, 2021 · US
Engine intake assembly with selector valve
US-10883414-B2 · Jan 5, 2021 · US
Engine compartment heating assembly
US-10883457-B2 · Jan 5, 2021 · US
Heated inlet of a crankcase ventilation system
US-10876445-B2 · Dec 29, 2020 · US
Hybrid vehicle
US-10876501-B2 · Dec 29, 2020 · US
Integrated power electronics and intake air thermal management system and method
US-10859045-B1 · Dec 8, 2020 · US
Silencing device
US-10823122-B2 · Nov 3, 2020 · US
Heated inlet of a crankcase ventilation system
US-2020248596-A1 · Aug 6, 2020 · US
Compression ignition engine with supercharger
US-2020208582-A1 · Jul 2, 2020 · US
Methods and systems for an engine with exhaust gas recirculation
US-2020141366-A1 · May 7, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02M31/10?
- CPC F02M31/10 is the Cooperative Patent Classification code for “by hot liquids, e.g. lubricants {or cooling water}.”
- How many patents are filed under CPC F02M31/10 (by hot liquids, e.g. lubricants {or cooling water})?
- Our database includes 60 publications tagged with this CPC code.
- Is patent activity under CPC F02M31/10 growing?
- Publication counts under this code: 2 in 2022 vs 5 in 2025 (latest complete years).