Exhaust sound bypass
US-11988122-B2 · May 21, 2024 · US
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the parts being resilient walls
the parts being resilient walls · 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 | F01N1/22 |
| Official title | the parts being resilient walls |
| Display label | the parts being resilient walls |
| Total patents | 14 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Exhaust system component
US-11603781-B2 · Mar 14, 2023 · US
Exhaust component with flexible membrane
US-2022341352-A1 · Oct 27, 2022 · US
Variable restriction valve for vehicle exhaust system
US-11326490-B2 · May 10, 2022 · US
Passive flap valve for vehicle exhaust system
US-11149602-B2 · Oct 19, 2021 · US
Exhaust system component
US-2021239017-A1 · Aug 5, 2021 · US
Road vehicle with an internal combustion engine and provided with an exhaust noise transmission device
US-11028743-B2 · Jun 8, 2021 · US
Exhaust Sound Bypass
US-2021062696-A1 · Mar 4, 2021 · US
Active helmholtz resonator with actuated membrane
US-2020265822-A1 · Aug 20, 2020 · US
Passive flap valve for vehicle exhaust system
US-2019360373-A1 · Nov 28, 2019 · US
Variable restriction valve for vehicle exhaust system
US-2019338686-A1 · Nov 7, 2019 · US
Road vehicle with an internal combustion engine and provided with an exhaust noise transmission device
US-2018320646-A1 · Nov 8, 2018 · US
Intake sound reduction device for internal combustion engine
US-10100793-B2 · Oct 16, 2018 · US
Intake sound reduction device for internal combustion engine
US-2017175690-A1 · Jun 22, 2017 · US