Methods and systems for a piston
US-10823045-B2 · Nov 3, 2020 · US
Squish flow
Squish flow · 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 | F02B23/0621 |
| Official title | {Squish flow} |
| Display label | Squish flow |
| Total patents | 83 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 15 |
| 2017 | 10 |
| 2018 | 6 |
| 2019 | 8 |
| 2020 | 15 |
| 2021 | 7 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Engine system for emission reduction without aftertreatment
US-10815871-B2 · Oct 27, 2020 · US
Compression self-ignited internal combustion engine
US-10774729-B2 · Sep 15, 2020 · US
Compression ignition engine
US-2020232380-A1 · Jul 23, 2020 · US
Piston combustion chamber structure of engine
US-2020182190-A1 · Jun 11, 2020 · US
Diesel engine and method for fuel distribution and combustion in combustion chamber of diesel engine
US-10662866-B2 · May 26, 2020 · US
Spark-ignited internal combustion engine
US-2020158045-A1 · May 21, 2020 · US
Combustion chamber structure for engine
US-2020158006-A1 · May 21, 2020 · US
Engine system for emission reduction without aftertreatment
US-2020018223-A1 · Jan 16, 2020 · US
Piston bowl for improved combustion stability
US-10400663-B2 · Sep 3, 2019 · US
Diesel engine and method for fuel distribution and combustion in combustion chamber of diesel engine
US-2019242294-A1 · Aug 8, 2019 · US
Compression self-ignited internal combustion engine
US-2019218958-A1 · Jul 18, 2019 · US
Internal combustion engine
US-2019203634-A1 · Jul 4, 2019 · US
Skewed combustion chamber for opposed-piston engines
US-10330006-B2 · Jun 25, 2019 · US
Piston bowl for improved combustion stability
US-2019186341-A1 · Jun 20, 2019 · US
Piston and cylinder features for enhanced squish flow
US-10316734-B2 · Jun 11, 2019 · US
Piston crown bowls defining combustion chamber constructions in opposed-piston engines
US-10180115-B2 · Jan 15, 2019 · US
Combustion chamber structure for internal combustion engine
US-10024267-B2 · Jul 17, 2018 · US
Asymmetrically-shaped combustion chamber for opposed-piston engines
US-9995213-B2 · Jun 12, 2018 · US
Combustion chamber structure for diesel engine
US-9938887-B2 · Apr 10, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02B23/0621?
- CPC F02B23/0621 is the Cooperative Patent Classification code for “Squish flow.”
- How many patents are filed under CPC F02B23/0621 (Squish flow)?
- Our database includes 83 publications tagged with this CPC code.
- Is patent activity under CPC F02B23/0621 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).