Engine aftertreatment system
US-11905873-B1 · Feb 20, 2024 · US
Mechanical Engineering
Mechanical Engineering · 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 | F01N3/033 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 117 |
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 | 16 |
| 2016 | 9 |
| 2017 | 9 |
| 2018 | 7 |
| 2019 | 12 |
| 2020 | 18 |
| 2021 | 19 |
| 2022 | 12 |
| 2023 | 3 |
| 2024 | 9 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for operating a combustion machine, combustion machine and motor vehicle
US-10871100-B2 · Dec 22, 2020 · US
Methods and systems for an aftertreatment system
US-2020362784-A1 · Nov 19, 2020 · US
Controller and control method for internal combustion engine
US-2020277910-A1 · Sep 3, 2020 · US
Methods and systems for an aftertreatment system
US-10760512-B2 · Sep 1, 2020 · US
Exhaust system device for vehicle
US-10746080-B2 · Aug 18, 2020 · US
Exhaust after-treatment system with adjustable flow path, and method for operating such an exhaust after-treatment system
US-2020165953-A1 · May 28, 2020 · US
Method for producing at least one ash-forming means for a particulate filter of an exhaust gas system of a gasoline engine
US-2019381438-A1 · Dec 19, 2019 · US
Methods and systems for exhaust particulate matter sensing
US-10481065-B2 · Nov 19, 2019 · US
Methods and systems for an aftertreatment system
US-2019331043-A1 · Oct 31, 2019 · US
Exhaust gas measuring system
US-10444209-B2 · Oct 15, 2019 · US
PASSIVE NOx ADSORBER
US-2019299161-A1 · Oct 3, 2019 · US
Methods and systems for exhaust particulate matter sensing
US-2019271629-A1 · Sep 5, 2019 · US
Regeneration control device for exhaust purification device
US-2019264591-A1 · Aug 29, 2019 · US
Compact device for purification and recirculation of exhaust gas
US-2019170034-A1 · Jun 6, 2019 · US
Cooling systems and strainers for cooling systems for marine engines
US-10293910-B1 · May 21, 2019 · US
Method for operating a combustion machine, combustion machine and motor vehicle
US-2019107036-A1 · Apr 11, 2019 · US
Particulate filters
US-2019048771-A1 · Feb 14, 2019 · US
A method and a system for determining a performance of a particulate filter of an engine
US-2019024565-A1 · Jan 24, 2019 · US
Method and system for exhaust particulate matter sensing
US-10100702-B2 · Oct 16, 2018 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01N3/033?
- CPC F01N3/033 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F01N3/033 (Mechanical Engineering)?
- Our database includes 117 publications tagged with this CPC code.
- Is patent activity under CPC F01N3/033 growing?
- Publication counts under this code: 9 in 2024 vs 1 in 2025 (latest complete years).