Internal combustion engine with spark plug and prechamber spark plug
US-12385446-B2 · Aug 12, 2025 · US
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specially adapted to pent roof shape of the combustion chamber
specially adapted to pent roof shape of the combustion chamber · 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 | F02F2001/241 |
| Official title | {specially adapted to pent roof shape of the combustion chamber} |
| Display label | specially adapted to pent roof shape of the combustion chamber |
| Total patents | 21 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 4 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Internal Combustion Engine with Spark Plug and Prechamber Spark Plug
US-2024229734-A9 · Jul 11, 2024 · US
A piston for a lean-burn gasoline engine
US-2024167431-A1 · May 23, 2024 · US
Internal Combustion Engine with Spark Plug and Prechamber Spark Plug
US-2024133350-A1 · Apr 25, 2024 · US
Method of controlling engine, and engine system
US-11859574-B2 · Jan 2, 2024 · US
Engine with combustion chamber
US-11624313-B2 · Apr 11, 2023 · US
Combustion chamber structure for internal combustion engine
US-11346276-B2 · May 31, 2022 · US
Engine with combustion chamber
US-2022162982-A1 · May 26, 2022 · US
Method of controlling engine, and engine system
US-2022145824-A1 · May 12, 2022 · US
Internal combustion engine
US-11125181-B2 · Sep 21, 2021 · US
Combustion chamber structure for internal combustion engine
US-2021115841-A1 · Apr 22, 2021 · US
Internal Combustion Engine
US-2020173392-A1 · Jun 4, 2020 · US
Spark-ignition internal combustion engine
US-2020018225-A1 · Jan 16, 2020 · US
Cylinder Structure of Diesel Engine
US-2019128210-A1 · May 2, 2019 · US
Combustion chamber structure of spark-ignition internal combustion engine
US-10267213-B2 · Apr 23, 2019 · US
Fuel injection control device and fuel injection control method
US-10100772-B2 · Oct 16, 2018 · US
Combustion chamber geometry
US-2018245506-A1 · Aug 30, 2018 · US
Fuel injection control device and fuel injection control method
US-2018171926-A1 · Jun 21, 2018 · US
Gasoline-diesel complex combustion engine
US-2017167456-A1 · Jun 15, 2017 · US
Combustion chamber structure of spark-ignition internal combustion engine
US-2016326947-A1 · Nov 10, 2016 · US