Method for operating an internal combustion engine, and internal combustion engine
US-12416268-B2 · Sep 16, 2025 · US
using an exhaust gas igniter, e.g. a spark or glow plug, without introducing fuel into exhaust duct
using an exhaust gas igniter, e.g. a spark or glow plug, without introducing fuel into exhaust duct · 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 | F01N3/204 |
| Official title | {using an exhaust gas igniter, e.g. a spark or glow plug, without introducing fuel into exhaust duct} |
| Display label | using an exhaust gas igniter, e.g. a spark or glow plug, without introducing fuel into exhaust duct |
| Total patents | 41 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 7 |
| 2024 | 9 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rapid exhaust catalyst heating using a glow plug
US-2025277464-A1 · Sep 4, 2025 · US
Support unit for supporting a heating conductor of an exhaust gas heater on a carrier structure
US-12345190-B2 · Jul 1, 2025 · US
Burner for a motor vehicle and motor vehicle having at least one such burner
US-12221914-B2 · Feb 11, 2025 · US
Internal combustion engine
US-12173636-B1 · Dec 24, 2024 · US
Method for operating an internal combustion engine, and internal combustion engine
US-2024392732-A1 · Nov 28, 2024 · US
Burner for a motor vehicle
US-12049841-B2 · Jul 30, 2024 · US
Support unit for supporting a heating conductor of an exhaust gas heater on a carrier structure
US-2024183298-A1 · Jun 6, 2024 · US
Burner for a Motor Vehicle
US-2024175386-A1 · May 30, 2024 · US
Burner for a Motor Vehicle and Motor Vehicle Having at Least One Such Burner
US-2024175385-A1 · May 30, 2024 · US
Method and processor unit for operating an exhaust gas burner
US-11988128-B2 · May 21, 2024 · US
Exhaust system combustion for rapid catalyst heating
US-11905900-B1 · Feb 20, 2024 · US
Selective catalytic reduction catalyst pre-heating burner assembly and method of controlling burner emissions
US-11885251-B2 · Jan 30, 2024 · US
Selective catalytic reduction catalyst pre-heating burner assembly and method of controling burner emissions
US-2023383681-A1 · Nov 30, 2023 · US
Multi-tier exhaust burner control for SCR catalyst pre-heating
US-11821350-B2 · Nov 21, 2023 · US
Method to control a burner for an exhaust system of an internal combustion engine
US-11686233-B2 · Jun 27, 2023 · US
Method for operating an exhaust gas burner
US-11629622-B2 · Apr 18, 2023 · US
Method to Control an Exhaust Gas After-Treatment System for an Exhaust Gas System of an Internal Combustion Engine
US-2023032897-A1 · Feb 2, 2023 · US
Multi-Tier Exhaust Burner Control For SCR Catalyst Pre-Heating
US-2023010915-A1 · Jan 12, 2023 · US
Method To Control A Burner For An Exhaust System Of An Internal Combustion Engine
US-2023003156-A1 · Jan 5, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01N3/204?
- CPC F01N3/204 is the Cooperative Patent Classification code for “using an exhaust gas igniter, e.g. a spark or glow plug, without introducing fuel into exhaust duct.”
- How many patents are filed under CPC F01N3/204 (using an exhaust gas igniter, e.g. a spark or glow plug, without introducing fuel into exhaust duct)?
- Our database includes 41 publications tagged with this CPC code.
- Is patent activity under CPC F01N3/204 growing?
- Publication counts under this code: 9 in 2024 vs 4 in 2025 (latest complete years).