Cylinder head for an internal combustion engine
US-12085037-B2 · Sep 10, 2024 · US
Cooling of valves
Cooling of valves · 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 | F01L3/12 |
| Official title | Cooling of valves |
| Display label | Cooling of valves |
| Total patents | 57 |
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 | 9 |
| 2017 | 3 |
| 2018 | 9 |
| 2019 | 5 |
| 2020 | 3 |
| 2021 | 13 |
| 2022 | 6 |
| 2023 | 5 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cylinder head for an internal combustion engine
US-2023374951-A1 · Nov 23, 2023 · US
Poppet valve
US-11767774-B2 · Sep 26, 2023 · US
Multi-valve
US-11732621-B2 · Aug 22, 2023 · US
Cylinder cover and method of improving corrosion resistance thereof
US-11674472-B2 · Jun 13, 2023 · US
Cylinder cover and method of improving corrosion resistance thereof
US-2023081391-A1 · Mar 16, 2023 · US
Multi-valve
US-2022341350-A1 · Oct 27, 2022 · US
Valve seat insert with soft landing insert design with contoured radii
US-11480075-B2 · Oct 25, 2022 · US
Valve seat insert with soft landing insert design with contoured radii
US-11473457-B2 · Oct 18, 2022 · US
Cylinder head valve seat with high thermal conductivity and multiple material cross-section
US-11473456-B2 · Oct 18, 2022 · US
Engine cooling system including cooled exhaust seats
US-11441512-B2 · Sep 13, 2022 · US
Cylinder head valve seat with high thermal conductivity and multiple material cross-section
US-2022082035-A1 · Mar 17, 2022 · US
Valve seat ring of a gas exchange valve and gas exchange valve
US-11193402-B2 · Dec 7, 2021 · US
Combustion-chamber structure of engine
US-2021310401-A1 · Oct 7, 2021 · US
Valve seat insert with soft landing insert design with contoured radii
US-2021301689-A1 · Sep 30, 2021 · US
Valve seat insert with soft landing insert design with contoured radii
US-2021301688-A1 · Sep 30, 2021 · US
Valve seat insert with soft landing insert design with contoured radii
US-2021293159-A1 · Sep 23, 2021 · US
Valve seat insert with soft landing insert design with contoured radii
US-2021293160-A1 · Sep 23, 2021 · US
Valve seat insert with soft landing insert design with contoured radii
US-11125122-B1 · Sep 21, 2021 · US
Valve seat insert with soft landing insert design with contoured radii
US-11125123-B1 · Sep 21, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01L3/12?
- CPC F01L3/12 is the Cooperative Patent Classification code for “Cooling of valves.”
- How many patents are filed under CPC F01L3/12 (Cooling of valves)?
- Our database includes 57 publications tagged with this CPC code.
- Is patent activity under CPC F01L3/12 growing?
- Publication counts under this code: 5 in 2023 vs 1 in 2024 (latest complete years).