Marine engine intake manifolds having noise attenuation
US-11578687-B1 · Feb 14, 2023 · US
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Multiple plenum chambers or plenum chambers having inner separation walls, e.g. comprising valves for the same group of cylinders
Multiple plenum chambers or plenum chambers having inner separation walls, e.g. comprising valves for the same group of cylinders · 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 | F02B27/0252 |
| Official title | {Multiple plenum chambers or plenum chambers having inner separation walls, e.g. comprising valves for the same group of cylinders} |
| Display label | Multiple plenum chambers or plenum chambers having inner separation walls, e.g. comprising valves for the same group of cylinders |
| Total patents | 12 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 1 |
| 2017 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2022 | 4 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Internal combustion engine system
US-11536227-B2 · Dec 27, 2022 · US
Internal combustion engine system operable in at least two operating modes
US-11512672-B2 · Nov 29, 2022 · US
Internal combustion engine system
US-2022341380-A1 · Oct 27, 2022 · US
Internal combustion engine system operable in at least two operating modes
US-2022341379-A1 · Oct 27, 2022 · US
Controlling One or More Intake Manifold Tuning Valves (IMTV) In An Internal Combustion Engine
US-2020232428-A1 · Jul 23, 2020 · US
Variable intake system
US-10267273-B2 · Apr 23, 2019 · US
Intake control valve and intake apparatus
US-9732666-B2 · Aug 15, 2017 · US
Variable intake system
US-2016377037-A1 · Dec 29, 2016 · US
Intake control valve and intake apparatus
US-2015267656-A1 · Sep 24, 2015 · US
Air intake apparatus for internal combustion engine
US-9051908-B2 · Jun 9, 2015 · US
Air intake control valve
US-8955484-B2 · Feb 17, 2015 · US