Engine brake system for an internal combustion engine
US-2025369398-A1 · Dec 4, 2025 · US
Arrangement of valve stems in cylinder heads
Arrangement of valve stems in cylinder heads · 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 | F02F2001/244 |
| Official title | {Arrangement of valve stems in cylinder heads} |
| Display label | Arrangement of valve stems in cylinder heads |
| Total patents | 40 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 1 |
| 2018 | 7 |
| 2019 | 5 |
| 2020 | 5 |
| 2021 | 6 |
| 2023 | 2 |
| 2024 | 4 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Engine brake system for an internal combustion engine
US-12486807-B1 · Dec 2, 2025 · US
Cylinder head for an internal combustion engine and an internal combustion engine with such a cylinder head
US-12442351-B2 · Oct 14, 2025 · US
Cylinder head offset chamfer design
US-2025116241-A1 · Apr 10, 2025 · US
Gaseous fuel engine having non-axisymmetric fuel admission valve and method
US-12078129-B2 · Sep 3, 2024 · US
Cylinder head for an internal combustion engine and an internal combustion engine with such a cylinder head
US-2024209814-A1 · Jun 27, 2024 · US
Cylinder head for an internal combustion engine and an internal combustion engine with such a cylinder head
US-2024209770-A1 · Jun 27, 2024 · US
Gaseous fuel engine having non-axisymmetric fuel admission valve and method
US-2024200513-A1 · Jun 20, 2024 · US
Cylinder head for an internal combustion engine and method for the production thereof
US-11835013-B2 · Dec 5, 2023 · US
Stem seal for valve assembly of machine engine
US-11608760-B2 · Mar 21, 2023 · US
Cylinder head for an internal combustion engine and method for the production thereof
US-2021348580-A1 · Nov 11, 2021 · US
Stem seal for valve assembly of machine engine
US-2021340890-A1 · Nov 4, 2021 · US
Cylinder head
US-11092044-B2 · Aug 17, 2021 · US
Cylinder head
US-10968861-B2 · Apr 6, 2021 · US
Engine exhaust valve shield
US-10947924-B2 · Mar 16, 2021 · US
Valve bridge systems comprising valve bridge guide
US-10883392-B2 · Jan 5, 2021 · US
Cylinder head
US-2020378279-A1 · Dec 3, 2020 · US
Cylinder head structure for internal combustion engine and internal combustion engine
US-10690015-B2 · Jun 23, 2020 · US
Valve bridge systems comprising valve bridge guide
US-2020141287-A1 · May 7, 2020 · US
Cylinder head
US-2020132015-A1 · Apr 30, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02F2001/244?
- CPC F02F2001/244 is the Cooperative Patent Classification code for “Arrangement of valve stems in cylinder heads.”
- How many patents are filed under CPC F02F2001/244 (Arrangement of valve stems in cylinder heads)?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC F02F2001/244 growing?
- Publication counts under this code: 4 in 2024 vs 4 in 2025 (latest complete years).