Internal combustion engine with spark plug and prechamber spark plug
US-12385446-B2 · Aug 12, 2025 · US
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one of the spark electrodes being mounted on the engine working piston
one of the spark electrodes being mounted on the engine working piston · 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 | F02P15/04 |
| Official title | one of the spark electrodes being mounted on the engine working piston |
| Display label | one of the spark electrodes being mounted on the engine working piston |
| Total patents | 18 |
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 | 5 |
| 2017 | 5 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 1 |
| 2024 | 2 |
| 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
Internal Combustion Engine with Spark Plug and Prechamber Spark Plug
US-2024133350-A1 · Apr 25, 2024 · US
In-combustion chamber flow control device
US-10626786-B2 · Apr 21, 2020 · US
In-combustion chamber flow control device
US-2019145307-A1 · May 16, 2019 · US
Advanced lean burn injector igniter system
US-10082292-B1 · Sep 25, 2018 · US
High-frequency radiation plug
US-10056736-B2 · Aug 21, 2018 · US
Advanced lean burn injector igniter system
US-9822977-B1 · Nov 21, 2017 · US
Ignition unit, ignition system, and internal combustion engine
US-2017328337-A1 · Nov 16, 2017 · US
Plasma generation device and internal combustion engine
US-9709019-B2 · Jul 18, 2017 · US
Internal combustion engine
US-9677534-B2 · Jun 13, 2017 · US
Antenna structure and internal combustion engine
US-9538631-B2 · Jan 3, 2017 · US
Method for controlling a corona ignition device
US-9422912-B2 · Aug 23, 2016 · US
Electrodes for multi-point ignition using single or multiple transient plasma discharges
US-9377002-B2 · Jun 28, 2016 · US
Electrical arc trigger systems, methods, and apparatuses
US-9341610-B1 · May 17, 2016 · US
Internal combustion engine
US-9309812-B2 · Apr 12, 2016 · US
Internal combustion engine
US-9273599-B2 · Mar 1, 2016 · US
Antenna structure and internal combustion engine
US-2015181687-A1 · Jun 25, 2015 · US