Side rail
US-10428943-B2 · Oct 1, 2019 · US
Mechanical Engineering
Mechanical Engineering · 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 | F02F5/00 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| 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 | 10 |
| 2016 | 14 |
| 2017 | 12 |
| 2018 | 23 |
| 2019 | 22 |
| 2020 | 28 |
| 2021 | 18 |
| 2022 | 12 |
| 2023 | 14 |
| 2024 | 8 |
| 2025 | 10 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Coated steel piston ring
US-2018340612-A1 · Nov 29, 2018 · US
Sliding element, in particular piston ring, and combination of a sliding element with a mating running element
US-10131988-B2 · Nov 20, 2018 · US
Compression piston ring for an internal combustion engine
US-10113643-B2 · Oct 30, 2018 · US
Pressure ring
US-2018299011-A1 · Oct 18, 2018 · US
Piston ring
US-10100929-B2 · Oct 16, 2018 · US
Unburned fuel venting in internal combustion engines
US-10041438-B2 · Aug 7, 2018 · US
Compression piston ring
US-2018216734-A1 · Aug 2, 2018 · US
Piston for an internal combustion engine
US-2018216570-A1 · Aug 2, 2018 · US
Sliding member and piston ring
US-10036472-B2 · Jul 31, 2018 · US
Piston ring and its production method
US-2018209541-A1 · Jul 26, 2018 · US
Piston compression rings of copper-nickel-tin alloys
US-2018195612-A1 · Jul 12, 2018 · US
Piston compression rings of copper-beryllium alloys
US-2018195613-A1 · Jul 12, 2018 · US
Piston ring for combustion engine
US-2018187780-A1 · Jul 5, 2018 · US
Sliding member and piston ring
US-2018187781-A1 · Jul 5, 2018 · US
Piston ring and manufacturing method therefor
US-2018180181-A1 · Jun 28, 2018 · US
Piston ring
US-2018180182-A1 · Jun 28, 2018 · US
Combined oil control ring
US-2018112775-A1 · Apr 26, 2018 · US
Combined oil control ring
US-2018094726-A1 · Apr 5, 2018 · US
Piston ring
US-2018080556-A1 · Mar 22, 2018 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02F5/00?
- CPC F02F5/00 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F02F5/00 (Mechanical Engineering)?
- Our database includes 173 publications tagged with this CPC code.
- Is patent activity under CPC F02F5/00 growing?
- Publication counts under this code: 8 in 2024 vs 10 in 2025 (latest complete years).