Method for ascertaining the nitrogen oxide fraction and/or ammonia fraction in the exhaust gas of an internal combustion engine
US-11725602-B2 · Aug 15, 2023 · US
the characteristics being a CO content or concentration
the characteristics being a CO content or concentration · 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 | F02D41/1453 |
| Official title | {the characteristics being a CO content or concentration} |
| Display label | the characteristics being a CO content or concentration |
| Total patents | 67 |
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 | 4 |
| 2016 | 2 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 10 |
| 2020 | 13 |
| 2021 | 11 |
| 2022 | 11 |
| 2023 | 5 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Combustion system
US-11719179-B2 · Aug 8, 2023 · US
Combustion system
US-2022403794-A1 · Dec 22, 2022 · US
Techniques for transient estimation and compensation of control parameters for dedicated EGR engines
US-11492992-B2 · Nov 8, 2022 · US
Carbon monoxide sensor for an engine assembly
US-11467145-B2 · Oct 11, 2022 · US
Method for Ascertaining the Nitrogen Oxide Fraction and/or Ammonia Fraction in the Exhaust Gas of an Internal Combustion Engine
US-2022316416-A1 · Oct 6, 2022 · US
Methods and systems for a motor vehicle
US-11448515-B2 · Sep 20, 2022 · US
Carbon monoxide detecting system for internal combustion engine-based machines
US-2022243672-A1 · Aug 4, 2022 · US
Method for determining indicators regarding the polluting nature of mobility taking real usage into account
US-11348384-B2 · May 31, 2022 · US
Internal Combustion Engine Control Device
US-2022099043-A1 · Mar 31, 2022 · US
Engine generator
US-11274620-B2 · Mar 15, 2022 · US
Gas heat-pump system
US-11248544-B2 · Feb 15, 2022 · US
Carbon monoxide detecting system for internal combustion engine-based machines
US-11248540-B2 · Feb 15, 2022 · US
Carbon monoxide sensor for an engine assembly
US-2021341443-A1 · Nov 4, 2021 · US
Methods and systems for a motor vehicle
US-2021333118-A1 · Oct 28, 2021 · US
Method of estimating oxygen storage capacity of catalyst
US-11092096-B1 · Aug 17, 2021 · US
Control unit for adapting the emission of a vehicle
US-11085383-B2 · Aug 10, 2021 · US
Calculation of exhaust emissions of a motor vehicle
US-11078857-B2 · Aug 3, 2021 · US
Control device for internal combustion engine
US-11067017-B2 · Jul 20, 2021 · US
Carbon monoxide sensor for portable generator
US-11067556-B1 · Jul 20, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02D41/1453?
- CPC F02D41/1453 is the Cooperative Patent Classification code for “the characteristics being a CO content or concentration.”
- How many patents are filed under CPC F02D41/1453 (the characteristics being a CO content or concentration)?
- Our database includes 67 publications tagged with this CPC code.
- Is patent activity under CPC F02D41/1453 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).