Internal combustion engine for gaseous fuel
US-12253046-B2 · Mar 18, 2025 · US
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Squish effect
Squish effect · 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 | F02B2275/40 |
| Official title | Squish effect |
| Display label | Squish effect |
| Total patents | 20 |
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 | 2 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Internal combustion engine for gaseous fuel
US-2024068426-A1 · Feb 29, 2024 · US
Internal combustion engine for gaseous fuel
US-11840984-B2 · Dec 12, 2023 · US
Internal combustion engine for gaseous fuel
US-2023193848-A1 · Jun 22, 2023 · US
Low compression natural gas engine piston bowl for improved combustion stability
US-11519359-B1 · Dec 6, 2022 · US
Apparatus for optimizing fuel/air mixing process of internal combustion engine
US-11346275-B2 · May 31, 2022 · US
Apparatus for optimizing fuel/air mixing process of internal combustion engine
US-2021310403-A1 · Oct 7, 2021 · US
Engine operating method and piston having non-reentrant combustion bowl and anti-sooting ramp
US-11047293-B1 · Jun 29, 2021 · US
Elliptically-shaped combustion chamber
US-10787954-B2 · Sep 29, 2020 · US
Compression self-ignited internal combustion engine
US-10774729-B2 · Sep 15, 2020 · US
Compression self-ignited internal combustion engine
US-2019218958-A1 · Jul 18, 2019 · US
Piston and cylinder features for enhanced squish flow
US-10316734-B2 · Jun 11, 2019 · US
Elliptically-shaped combustion chamber
US-2019101049-A1 · Apr 4, 2019 · US
Piston
US-9938927-B2 · Apr 10, 2018 · US
Piston and Cylinder Features for Enhanced Squish Flow
US-2018094569-A1 · Apr 5, 2018 · US
Textured Piston
US-2017145951-A1 · May 25, 2017 · US
Piston
US-2017082059-A1 · Mar 23, 2017 · US
Combustion chamber structure for engine
US-2016201551-A1 · Jul 14, 2016 · US
Compression ignition internal combustion engine
US-2016138461-A1 · May 19, 2016 · US
Combustion chamber for diesel engines with inclined engine valves
US-9074519-B2 · Jul 7, 2015 · US