Exhaust gas aftertreatment device
US-2020408130-A1 · Dec 31, 2020 · US
with exhaust silencers in a single housing
with exhaust silencers in a single housing · 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 | F01N3/2885 |
| Official title | {with exhaust silencers in a single housing} |
| Display label | with exhaust silencers in a single housing |
| Total patents | 104 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 11 |
| 2017 | 14 |
| 2018 | 8 |
| 2019 | 8 |
| 2020 | 9 |
| 2021 | 10 |
| 2022 | 13 |
| 2023 | 6 |
| 2024 | 6 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Outlet for exhaust gas aftertreatment module
US-2020300137-A1 · Sep 24, 2020 · US
Engine and engine-driven working machine
US-10718243-B2 · Jul 21, 2020 · US
Exhaust gas purification system
US-10683791-B2 · Jun 16, 2020 · US
Acoustic volume in hot-end of exhaust systems
US-2020173320-A1 · Jun 4, 2020 · US
Exhaust gas purification system and controlling method thereof
US-10648384-B2 · May 12, 2020 · US
Exhaust pipe device of saddle-riding vehicle
US-2020032691-A1 · Jan 30, 2020 · US
Exhaust gas sensor mounting structure
US-10473019-B2 · Nov 12, 2019 · US
Engine device and stationary work machine having same mounted thereon
US-10371040-B2 · Aug 6, 2019 · US
Mixing apparatus for an exhaust gas aftertreatment system, exhaust gas aftertreatment system and internal combustion engine
US-10344656-B2 · Jul 9, 2019 · US
Module for the metered provision of a liquid
US-10287955-B2 · May 14, 2019 · US
Muffler
US-2019120116-A1 · Apr 25, 2019 · US
Method and apparatus to enable package space reduction in a vehicle exhaust system
US-2019093528-A1 · Mar 28, 2019 · US
Exhaust muffler for combustion engine
US-10196948-B2 · Feb 5, 2019 · US
Engine and engine work machine
US-2019032531-A1 · Jan 31, 2019 · US
Exhaust Gas Purification System
US-2018347438-A1 · Dec 6, 2018 · US
Catalyst storage case, exhaust duct, and engine
US-10113467-B2 · Oct 30, 2018 · US
Exhaust device
US-2018274426-A1 · Sep 27, 2018 · US
Exhaust gas sensor mounting structure
US-2018202343-A1 · Jul 19, 2018 · US
Exhaust gas purification system and controlling method thereof
US-2018163590-A1 · Jun 14, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01N3/2885?
- CPC F01N3/2885 is the Cooperative Patent Classification code for “with exhaust silencers in a single housing.”
- How many patents are filed under CPC F01N3/2885 (with exhaust silencers in a single housing)?
- Our database includes 104 publications tagged with this CPC code.
- Is patent activity under CPC F01N3/2885 growing?
- Publication counts under this code: 6 in 2024 vs 6 in 2025 (latest complete years).