Cylinder head assembly, cylinder head, and method
US-2018347507-A1 · Dec 6, 2018 · US
with positive ignition
with positive 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 | F02B23/08 |
| Official title | with positive ignition |
| Display label | with positive ignition |
| Total patents | 173 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 15 |
| 2017 | 18 |
| 2018 | 19 |
| 2019 | 25 |
| 2020 | 23 |
| 2021 | 20 |
| 2022 | 11 |
| 2023 | 10 |
| 2024 | 9 |
| 2025 | 10 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Internal combustion engine with an electronically controlled tumble control valve
US-2018320629-A1 · Nov 8, 2018 · US
Gap member and internal combustion engine
US-2018306099-A1 · Oct 25, 2018 · US
Ignition plug and ignition system including the same
US-2018301877-A1 · Oct 18, 2018 · US
Control device for internal combustion engine
US-10066562-B2 · Sep 4, 2018 · US
Internal combustion engine
US-2018230895-A1 · Aug 16, 2018 · US
Piston for prechamber-type gas engine and prechamber-type gas engine
US-10024221-B2 · Jul 17, 2018 · US
Power cylinder apparatus for reducing unburnt hydrocarbon emissions
US-2018135507-A1 · May 17, 2018 · US
Piston with Flame Guiding Passageways
US-2018094570-A1 · Apr 5, 2018 · US
Internal combustion engine
US-9920737-B2 · Mar 20, 2018 · US
Multipoint ignition systems and methods
US-9915189-B2 · Mar 13, 2018 · US
Direct-injection, applied-ignition internal combustion engine with injection device arranged in the cylinder liner, and method for operating an internal combustion engine of said type
US-2018017013-A1 · Jan 18, 2018 · US
Control device for internal combustion engine
US-2018010538-A1 · Jan 11, 2018 · US
Electromagnetic wave emission device
US-9867270-B2 · Jan 9, 2018 · US
Piston crown to raise compression ratio
US-9845766-B2 · Dec 19, 2017 · US
Air motor and pump comprising such a motor
US-2017350247-A1 · Dec 7, 2017 · US
Compression-ignition type internal combustion engine, and internal combustion engine
US-2017306918-A1 · Oct 26, 2017 · US
Engine
US-9784153-B2 · Oct 10, 2017 · US
Ignition device
US-2017251546-A1 · Aug 31, 2017 · US
Internal combustion engine
US-2017234287-A1 · Aug 17, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02B23/08?
- CPC F02B23/08 is the Cooperative Patent Classification code for “with positive ignition.”
- How many patents are filed under CPC F02B23/08 (with positive ignition)?
- Our database includes 173 publications tagged with this CPC code.
- Is patent activity under CPC F02B23/08 growing?
- Publication counts under this code: 9 in 2024 vs 10 in 2025 (latest complete years).