Diesel engine
US-2019376442-A1 · Dec 12, 2019 · US
W-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder wall
W-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder wall · 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 | F02B23/0696 |
| Official title | {W-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder wall} |
| Display label | W-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder wall |
| Total patents | 118 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 19 |
| 2017 | 5 |
| 2018 | 14 |
| 2019 | 20 |
| 2020 | 13 |
| 2021 | 10 |
| 2022 | 8 |
| 2023 | 9 |
| 2024 | 3 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Piston crown
US-2019292978-A1 · Sep 26, 2019 · US
Diesel engine and method for fuel distribution and combustion in combustion chamber of diesel engine
US-2019242294-A1 · Aug 8, 2019 · US
Galleryless piston with cutout above pin bore
US-10344706-B2 · Jul 9, 2019 · US
Piston and cylinder features for enhanced squish flow
US-10316734-B2 · Jun 11, 2019 · US
Piston with soot reducing piston bowl
US-2019136794-A1 · May 9, 2019 · US
Combustion chamber structure of engine
US-10273870-B2 · Apr 30, 2019 · US
Piston and engine provided with the same
US-10233864-B2 · Mar 19, 2019 · US
Internal combustion engine
US-10202931-B2 · Feb 12, 2019 · US
Engine piston
US-10184388-B1 · Jan 22, 2019 · US
Control system of compression-ignition engine
US-2018334998-A1 · Nov 22, 2018 · US
Control system of compression-ignition engine
US-2018334949-A1 · Nov 22, 2018 · US
Combustion bowl of a piston for an engine
US-10113503-B2 · Oct 30, 2018 · US
Combustion system for an internal combustion engine
US-2018283315-A1 · Oct 4, 2018 · US
Engine
US-2018258884-A1 · Sep 13, 2018 · US
Combustion chamber structure for diesel engine
US-10041395-B2 · Aug 7, 2018 · US
Combustion chamber structure for internal combustion engine
US-10024267-B2 · Jul 17, 2018 · US
Combustion chamber structure of engine
US-2018171862-A1 · Jun 21, 2018 · US
Piston for internal combustion engine
US-RE46806-E · Apr 24, 2018 · US
Combustion bowl of a piston for an engine
US-2018100466-A1 · Apr 12, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02B23/0696?
- CPC F02B23/0696 is the Cooperative Patent Classification code for “W-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder wall.”
- How many patents are filed under CPC F02B23/0696 (W-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder wall)?
- Our database includes 118 publications tagged with this CPC code.
- Is patent activity under CPC F02B23/0696 growing?
- Publication counts under this code: 3 in 2024 vs 5 in 2025 (latest complete years).