Traction battery venting system and venting method
US-11715860-B2 · Aug 1, 2023 · US
by using dead chambers communicating with exhaust gas flow passages
by using dead chambers communicating with exhaust gas flow passages · 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 | F01N1/003 |
| Official title | {by using dead chambers communicating with exhaust gas flow passages} |
| Display label | by using dead chambers communicating with exhaust gas flow passages |
| Total patents | 71 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 5 |
| 2017 | 7 |
| 2018 | 4 |
| 2019 | 10 |
| 2020 | 8 |
| 2021 | 6 |
| 2022 | 13 |
| 2023 | 7 |
| 2024 | 2 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Exhaust silencing device and system, vehicle, and exhaust silencing method
US-2023212968-A1 · Jul 6, 2023 · US
Vehicle exhaust assemblies and methods therefor
US-2022412245-A1 · Dec 29, 2022 · US
Muffler and method for making a muffler
US-2022389848-A1 · Dec 8, 2022 · US
Double inlets exhaust system for unmanned aerial vehicle
US-11485510-B2 · Nov 1, 2022 · US
Traction battery venting system and venting method
US-2022311083-A1 · Sep 29, 2022 · US
Acoustically Tuned Muffler
US-2022275738-A1 · Sep 1, 2022 · US
Exhaust device
US-2022220873-A1 · Jul 14, 2022 · US
Tail pipe
US-11377988-B2 · Jul 5, 2022 · US
Acoustically tuned muffler
US-11365658-B2 · Jun 21, 2022 · US
Variable valve for muffler and dual muffler having the same
US-11319848-B2 · May 3, 2022 · US
Exhaust gas purification device
US-11267333-B2 · Mar 8, 2022 · US
Muffler comprising a Helmholtz resonator and a vehicle comprising such a muffler
US-11255238-B2 · Feb 22, 2022 · US
Exhaust silencer device
US-11220949-B2 · Jan 11, 2022 · US
Muffler system
US-11215105-B2 · Jan 4, 2022 · US
Acoustically tuned muffler
US-11199116-B2 · Dec 14, 2021 · US
Muffler for an exhaust system of an internal combustion engine
US-11143070-B2 · Oct 12, 2021 · US
Two-Passage Exhaust System For An Engine
US-2021131343-A1 · May 6, 2021 · US
Exhaust structure of vehicle
US-10988019-B2 · Apr 27, 2021 · US
Vehicle frame with acoustic volume for an exhaust system
US-10941693-B2 · Mar 9, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01N1/003?
- CPC F01N1/003 is the Cooperative Patent Classification code for “by using dead chambers communicating with exhaust gas flow passages.”
- How many patents are filed under CPC F01N1/003 (by using dead chambers communicating with exhaust gas flow passages)?
- Our database includes 71 publications tagged with this CPC code.
- Is patent activity under CPC F01N1/003 growing?
- Publication counts under this code: 2 in 2024 vs 3 in 2025 (latest complete years).