Engine exhaust heat management system
US-11530636-B2 · Dec 20, 2022 · US
without contact between air and exhaust gases
without contact between air and exhaust gases · 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 | F01N3/055 |
| Official title | {without contact between air and exhaust gases} |
| Display label | without contact between air and exhaust gases |
| 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 | 12 |
| 2016 | 16 |
| 2017 | 6 |
| 2018 | 6 |
| 2019 | 6 |
| 2020 | 2 |
| 2021 | 8 |
| 2022 | 5 |
| 2023 | 2 |
| 2024 | 4 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Exhaust assembly for a utility vehicle
US-2022355659-A1 · Nov 10, 2022 · US
Exhaust device and vehicle for travel on uneven terrains
US-11492939-B2 · Nov 8, 2022 · US
Exhaust device and vehicle for travel on uneven terrains
US-2022042434-A1 · Feb 10, 2022 · US
Heat exchanger
US-2021381473-A1 · Dec 9, 2021 · US
Engine exhaust heat management system
US-2021348533-A1 · Nov 11, 2021 · US
Method for operating an exhaust gas purification apparatus
US-11136912-B2 · Oct 5, 2021 · US
Machine system for co-production of electrical power and water and method of operating same
US-11118490-B2 · Sep 14, 2021 · US
Machine system for co-production of electrical power and water and method of operating same
US-2021231037-A1 · Jul 29, 2021 · US
Exhaust gas recirculation system
US-11060488-B2 · Jul 13, 2021 · US
Exhaust gas purification apparatus for internal combustion engine
US-11028744-B2 · Jun 8, 2021 · US
Turboprop engine assembly with combined engine and cooling exhaust
US-10927734-B2 · Feb 23, 2021 · US
Method for operating an exhaust gas purification apparatus
US-2020271041-A1 · Aug 27, 2020 · US
Exhaust gas purification apparatus for internal combustion engine
US-2020116058-A1 · Apr 16, 2020 · US
Mounting arrangement for engine exhaust aftertreatment system on crane carrier
US-2019366835-A1 · Dec 5, 2019 · US
Exhaust after-treatment mounting arrangement
US-10427517-B2 · Oct 1, 2019 · US
Turboprop engine assembly with combined engine and cooling exhaust
US-2019203620-A1 · Jul 4, 2019 · US
Exhaust gas recirculation system
US-2019120179-A1 · Apr 25, 2019 · US
Turboprop engine assembly with combined engine and cooling exhaust
US-10267191-B2 · Apr 23, 2019 · US
Structure for cooling exhaust manifold and method for controlling the same
US-10240510-B2 · Mar 26, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01N3/055?
- CPC F01N3/055 is the Cooperative Patent Classification code for “without contact between air and exhaust gases.”
- How many patents are filed under CPC F01N3/055 (without contact between air and exhaust gases)?
- Our database includes 71 publications tagged with this CPC code.
- Is patent activity under CPC F01N3/055 growing?
- Publication counts under this code: 4 in 2024 vs 4 in 2025 (latest complete years).