Systems and methods for managing ammonia slip with a heater
US-12372019-B2 · Jul 29, 2025 · US
using microwaves
using microwaves · 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 | F01N3/202 |
| Official title | {using microwaves} |
| Display label | using microwaves |
| Total patents | 42 |
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 | 3 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 7 |
| 2020 | 9 |
| 2021 | 5 |
| 2022 | 2 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System for reducing voc and nitrogen oxide and method for reducing same
US-12092010-B2 · Sep 17, 2024 · US
Systems and methods for managing ammonia slip with a heater
US-2024218818-A1 · Jul 4, 2024 · US
System for reducing VOC and nitrogen oxide and method for reducing same
US-11965446-B2 · Apr 23, 2024 · US
Internal-combustion-engine warm-up apparatus
US-11959409-B2 · Apr 16, 2024 · US
Systems and methods for coordination of skip-fire and aftertreatment heater operation to maintain exhaust gas temperature
US-11920533-B2 · Mar 5, 2024 · US
System for reducing voc and nitrogen oxide and method for reducing same
US-2023383680-A1 · Nov 30, 2023 · US
Internal-combustion-engine warm-up apparatus
US-2023304426-A1 · Sep 28, 2023 · US
Systems and methods for coordination of skip-fire and aftertreatment heater operation to maintain exhaust gas temperature
US-2023204000-A1 · Jun 29, 2023 · US
Microwave enhancement of exhaust aftertreatment systems
US-11603786-B1 · Mar 14, 2023 · US
Microwave assisted and low-temperature fabrication of nanowire arrays on scalable 2D and 3D substrates
US-11465129-B2 · Oct 11, 2022 · US
System for reducing voc and nitrogen oxide and method for reducing same
US-2022195902-A1 · Jun 23, 2022 · US
Exhaust gas purification apparatus for motor vehicles
US-10975744-B2 · Apr 13, 2021 · US
Catalytic device and exhaust gas purification system
US-10934913-B2 · Mar 2, 2021 · US
Exhaust after treatment system
US-10920634-B2 · Feb 16, 2021 · US
Control device for internal combustion engine and control method for internal combustion engine
US-10914213-B2 · Feb 9, 2021 · US
Heating device for exhaust catalyst
US-10912164-B2 · Feb 2, 2021 · US
Exhaust gas purification system for internal combustion engine
US-10871094-B2 · Dec 22, 2020 · US
Catalytic device and exhaust gas purification system
US-2020141296-A1 · May 7, 2020 · US
Catalytic device and exhaust gas purification system
US-2020131960-A1 · Apr 30, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01N3/202?
- CPC F01N3/202 is the Cooperative Patent Classification code for “using microwaves.”
- How many patents are filed under CPC F01N3/202 (using microwaves)?
- Our database includes 42 publications tagged with this CPC code.
- Is patent activity under CPC F01N3/202 growing?
- Publication counts under this code: 5 in 2024 vs 1 in 2025 (latest complete years).