Compression-ignition internal combustion engine
US-11300046-B2 · Apr 12, 2022 · US
with compression ignition
with compression ignition · 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 | F02B23/02 |
| Official title | with compression ignition |
| Display label | with compression ignition |
| Total patents | 72 |
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 | 11 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 8 |
| 2020 | 16 |
| 2021 | 9 |
| 2022 | 8 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Engine with combustion chamber
US-2022065158-A1 · Mar 3, 2022 · US
Engine with combustion chamber
US-2022065190-A1 · Mar 3, 2022 · US
Pre-chamber type diesel engine
US-2022010721-A1 · Jan 13, 2022 · US
Control apparatus for compression-ignition type engine
US-11187179-B2 · Nov 30, 2021 · US
Control apparatus for compression-ignition type engine
US-2021363935-A1 · Nov 25, 2021 · US
Diesel engine particulate filter regeneration system and methods
US-11156178-B2 · Oct 26, 2021 · US
Fuel injection control device for engine
US-11149675-B2 · Oct 19, 2021 · US
Control apparatus for compression-ignition type engine
US-2021231076-A1 · Jul 29, 2021 · US
Premixed compression ignition type engine with supercharging system
US-10982616-B2 · Apr 20, 2021 · US
Premixed compression ignition engine and method for controlling premixed compression ignition engine
US-10968859-B2 · Apr 6, 2021 · US
Engine system for emission reduction without aftertreatment
US-2021040880-A1 · Feb 11, 2021 · US
Fuel injection control device for engine
US-2021025318-A1 · Jan 28, 2021 · US
Length-adjustable connecting rod, device for setting a compression ratio and internal combustion engine
US-10876474-B2 · Dec 29, 2020 · US
Reciprocating-piston machine
US-10858991-B2 · Dec 8, 2020 · US
Exhaust gas control system for internal combustion engine
US-10823040-B2 · Nov 3, 2020 · US
Engine system for emission reduction without aftertreatment
US-10815871-B2 · Oct 27, 2020 · US
Internal combustion engine with combustion by injecting fuel into a compressed combustion chamber that includes a hollow duct
US-10808601-B2 · Oct 20, 2020 · US
Reciprocating-piston machine
US-10781747-B2 · Sep 22, 2020 · US
Power cylinder apparatus for reducing unburnt hydrocarbon emissions
US-10724424-B2 · Jul 28, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02B23/02?
- CPC F02B23/02 is the Cooperative Patent Classification code for “with compression ignition.”
- How many patents are filed under CPC F02B23/02 (with compression ignition)?
- Our database includes 72 publications tagged with this CPC code.
- Is patent activity under CPC F02B23/02 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).