Internal combustion engine
US-11125181-B2 · Sep 21, 2021 · US
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the combustion space being substantially spherical, hemispherical, ellipsoid or parabolic
the combustion space being substantially spherical, hemispherical, ellipsoid or parabolic · 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 | F02B23/0675 |
| Official title | {the combustion space being substantially spherical, hemispherical, ellipsoid or parabolic} |
| Display label | the combustion space being substantially spherical, hemispherical, ellipsoid or parabolic |
| Total patents | 22 |
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 | 3 |
| 2016 | 7 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Internal Combustion Engine
US-2020173392-A1 · Jun 4, 2020 · US
Dual-fuel constructions for opposed-piston engines with shaped combustion chambers
US-10465616-B2 · Nov 5, 2019 · US
Skewed combustion chamber for opposed-piston engines
US-10330006-B2 · Jun 25, 2019 · US
Multipoint ignition systems and methods
US-9915189-B2 · Mar 13, 2018 · US
Diesel piston with semi-hemispherical crown
US-9915222-B2 · Mar 13, 2018 · US
Skewed combustion chamber for opposed-piston engines
US-2018058315-A1 · Mar 1, 2018 · US
Skewed combustion chamber for opposed-piston engines
US-9840965-B2 · Dec 12, 2017 · US
Compression ignition internal combustion engine
US-9732665-B2 · Aug 15, 2017 · US
Multipoint Ignition Systems and Methods
US-2017145899-A1 · May 25, 2017 · US
Combustion chamber constructions for opposed-piston engines
US-9593627-B2 · Mar 14, 2017 · US
Skewed Combustion Chamber For Opposed-Piston Engines
US-2017030262-A1 · Feb 2, 2017 · US
Opposed-piston engine having a single crankshaft coupled to the opposed pistons by linkages with pivoted rocker arms
US-9488099-B2 · Nov 8, 2016 · US
Compression ignition internal combustion engine
US-2016265417-A1 · Sep 15, 2016 · US
Opposed-piston engine having a single crankshaft coupled to the opposed pistons by linkages with pivoted rocker arms
US-2016252014-A1 · Sep 1, 2016 · US
Fuel Injector with Offset Nozzle Angle
US-2016252066-A1 · Sep 1, 2016 · US
Dual-fuel constructions for opposed-piston engines with shaped combustion chambers
US-2016195028-A1 · Jul 7, 2016 · US
Opposed-piston engine having a single crankshaft coupled to the opposed pistons by linkages with pivoted rocker arms
US-9359896-B2 · Jun 7, 2016 · US
Combustion chamber constructions for opposed-piston engines
US-9309807-B2 · Apr 12, 2016 · US
Piston constructions for opposed-piston engines
US-9163505-B2 · Oct 20, 2015 · US