Muffler
US-2023212967-A1 · Jul 6, 2023 · US
comprising at least one perforated tube extending from inlet to outlet of the silencer
comprising at least one perforated tube extending from inlet to outlet of the silencer · 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 | F01N1/006 |
| Official title | {comprising at least one perforated tube extending from inlet to outlet of the silencer} |
| Display label | comprising at least one perforated tube extending from inlet to outlet of the silencer |
| Total patents | 73 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 5 |
| 2017 | 8 |
| 2018 | 4 |
| 2019 | 14 |
| 2020 | 6 |
| 2021 | 10 |
| 2022 | 12 |
| 2023 | 9 |
| 2024 | 3 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rear-mount turbocharger intake system
US-2022372911-A1 · Nov 24, 2022 · US
Muffler for vehicle for implementing sporty exhaust sound
US-11454148-B2 · Sep 27, 2022 · US
Acoustically Tuned Muffler
US-2022275738-A1 · Sep 1, 2022 · US
Muffler for engine, air-cooled engine, and work machine
US-2022268186-A1 · Aug 25, 2022 · US
Exhaust system and muffler
US-2022220874-A1 · Jul 14, 2022 · US
Muffler
US-11384665-B2 · Jul 12, 2022 · US
Muffler
US-11377989-B2 · Jul 5, 2022 · US
Muffler device and compressor having the same
US-2022196017-A1 · Jun 23, 2022 · US
Acoustically tuned muffler
US-11365658-B2 · Jun 21, 2022 · US
Exhaust device for internal combustion engine
US-11248504-B2 · Feb 15, 2022 · US
Exhaust device for internal combustion engine
US-11236652-B2 · Feb 1, 2022 · US
System and method for low co emission engine
US-2022010716-A1 · Jan 13, 2022 · US
System and method for low CO emission engine
US-11149617-B2 · Oct 19, 2021 · US
Exhaust line for a vehicle and vehicle with an exhaust line
US-2021301694-A1 · Sep 30, 2021 · US
Surface component for vehicle exhaust system
US-2021285349-A1 · Sep 16, 2021 · US
Muffler for vehicle
US-2021140354-A1 · May 13, 2021 · US
Muffler for vehicle for implementing sporty exhaust sound
US-2021131323-A1 · May 6, 2021 · US
Pillar shaped honeycomb structure, exhaust gas purifying device, exhaust system, and method for producing honeycomb structure
US-2021115825-A1 · Apr 22, 2021 · US
Vehicle exhaust device
US-10907525-B2 · Feb 2, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01N1/006?
- CPC F01N1/006 is the Cooperative Patent Classification code for “comprising at least one perforated tube extending from inlet to outlet of the silencer.”
- How many patents are filed under CPC F01N1/006 (comprising at least one perforated tube extending from inlet to outlet of the silencer)?
- Our database includes 73 publications tagged with this CPC code.
- Is patent activity under CPC F01N1/006 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).