Piston for an internal combustion engine
US-11492997-B2 · Nov 8, 2022 · US
One-piece oil-scraping rings
One-piece oil-scraping rings · 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 | F16J9/206 |
| Official title | {One-piece oil-scraping rings} |
| Display label | One-piece oil-scraping rings |
| Total patents | 77 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 13 |
| 2018 | 9 |
| 2019 | 9 |
| 2020 | 9 |
| 2021 | 10 |
| 2022 | 7 |
| 2023 | 5 |
| 2024 | 2 |
| 2025 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Flutter-suppression piston ring
US-11371610-B2 · Jun 28, 2022 · US
Scraper ring for a piston
US-2022186833-A1 · Jun 16, 2022 · US
Piston for an internal combustion engine
US-2022034280-A1 · Feb 3, 2022 · US
Play-free oil scraper ring
US-11199261-B2 · Dec 14, 2021 · US
Cylinder of an Internal Combustion Engine
US-2021381597-A1 · Dec 9, 2021 · US
Piston having two piston rings
US-11162585-B2 · Nov 2, 2021 · US
Three-part oil scraper ring
US-2021332885-A1 · Oct 28, 2021 · US
Method for producing piston ring with recess
US-11047479-B2 · Jun 29, 2021 · US
Piston ring combination
US-2021164568-A1 · Jun 3, 2021 · US
Piston ring
US-10982767-B2 · Apr 20, 2021 · US
Compression oil control piston ring
US-10969013-B2 · Apr 6, 2021 · US
One-piece oil control ring
US-10969014-B2 · Apr 6, 2021 · US
Two part oil control ring having oil pressure effect ridges
US-10883600-B2 · Jan 5, 2021 · US
Play-free oil scraper ring
US-2020378498-A1 · Dec 3, 2020 · US
Piston ring for engine
US-10844956-B2 · Nov 24, 2020 · US
Piston having two piston rings
US-2020248809-A1 · Aug 6, 2020 · US
Piston ring, piston assembly including piston ring, and methods of manufacturing
US-2020191269-A1 · Jun 18, 2020 · US
Oil scraper piston ring
US-2020141491-A1 · May 7, 2020 · US
Flutter-suppression piston ring
US-2020096103-A1 · Mar 26, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16J9/206?
- CPC F16J9/206 is the Cooperative Patent Classification code for “One-piece oil-scraping rings.”
- How many patents are filed under CPC F16J9/206 (One-piece oil-scraping rings)?
- Our database includes 77 publications tagged with this CPC code.
- Is patent activity under CPC F16J9/206 growing?
- Publication counts under this code: 2 in 2024 vs 7 in 2025 (latest complete years).