Acoustic efficiency
US-2025067202-A1 · Feb 27, 2025 · US
actuated by pressure of exhaust gases, e.g. exhaust pulses
actuated by pressure of exhaust gases, e.g. exhaust pulses · 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 | F01N2290/10 |
| Official title | actuated by pressure of exhaust gases, e.g. exhaust pulses |
| Display label | actuated by pressure of exhaust gases, e.g. exhaust pulses |
| Total patents | 27 |
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 | 4 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 5 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Sound bypass
US-12170078-B2 · Dec 17, 2024 · US
Acoustic device for a vehicle
US-2024308342-A1 · Sep 19, 2024 · US
Sound bypass
US-2023039045-A1 · Feb 9, 2023 · US
Exhaust-gas aftertreatment arrangement
US-11428131-B2 · Aug 30, 2022 · US
Adaptive exhaust valve with purpose-designed spring
US-11384666-B2 · Jul 12, 2022 · US
Pulse exhaust pipe and diesel engine installed with pulse exhaust pipe
US-11092061-B2 · Aug 17, 2021 · US
Exhaust-gas aftertreatment arrangement
US-2021199033-A1 · Jul 1, 2021 · US
Reductant insertion assembly comprising a bladder
US-11028752-B2 · Jun 8, 2021 · US
Adaptive exhaust valve with purpose-designed spring
US-2021131324-A1 · May 6, 2021 · US
Reductant insertion assembly comprising a bladder
US-2021025310-A1 · Jan 28, 2021 · US
Exhaust passage deposit mitigation
US-10814362-B2 · Oct 27, 2020 · US
Exhaust system spring with torsional damping
US-10662838-B2 · May 26, 2020 · US
Pulse exhaust pipe and diesel engine installed with pulse exhaust pipe
US-2020102877-A1 · Apr 2, 2020 · US
Exhaust passage deposit mitigation
US-2019344313-A1 · Nov 14, 2019 · US
Changeover valve
US-10465590-B2 · Nov 5, 2019 · US
Automatic branch communication valve
US-10066542-B2 · Sep 4, 2018 · US
Changeover valve
US-2018245501-A1 · Aug 30, 2018 · US
Exhaust purifying device for internal combustion engine
US-9732655-B2 · Aug 15, 2017 · US
Automatic branch communication valve
US-2017122193-A1 · May 4, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01N2290/10?
- CPC F01N2290/10 is the Cooperative Patent Classification code for “actuated by pressure of exhaust gases, e.g. exhaust pulses.”
- How many patents are filed under CPC F01N2290/10 (actuated by pressure of exhaust gases, e.g. exhaust pulses)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC F01N2290/10 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).