Method of machining a motion-supporting surface of a cylinder of an internal combustion engine
US-10316789-B2 · Jun 11, 2019 · US
Treating or finishing by applying pressure, e.g. knurling (B23P9/04 takes precedence)
Treating or finishing by applying pressure, e.g. knurling (B23P9/04 takes precedence) · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B23P9/02 |
| Official title | Treating or finishing by applying pressure, e.g. knurling (B23P9/04 takes precedence) |
| Display label | Treating or finishing by applying pressure, e.g. knurling (B23P9/04 takes precedence) |
| Total patents | 126 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 8 |
| 2017 | 16 |
| 2018 | 18 |
| 2019 | 10 |
| 2020 | 14 |
| 2021 | 10 |
| 2022 | 7 |
| 2023 | 9 |
| 2024 | 9 |
| 2025 | 6 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Tool for roughening a borehole surface
US-2018339347-A1 · Nov 29, 2018 · US
Green repair of oxidation and corrosion resistant coatings
US-2018334925-A1 · Nov 22, 2018 · US
Apparatus for producing compressive residual stress in balls
US-10118274-B2 · Nov 6, 2018 · US
Tool for roughening a borehole surface
US-2018272439-A1 · Sep 27, 2018 · US
Bearing and method of forming a bearing
US-10060479-B2 · Aug 28, 2018 · US
Apparatus for smoothing a toothing system and production process
US-10010927-B2 · Jul 3, 2018 · US
Deep rolling tool and method
US-2018171447-A1 · Jun 21, 2018 · US
Deep rolling tool and method
US-2018171448-A1 · Jun 21, 2018 · US
Deep rolling tool and method
US-2018169828-A1 · Jun 21, 2018 · US
Deep rolling tool for blade fatigue life enhancement
US-9999958-B2 · Jun 19, 2018 · US
Treated tapered article and method of treatment for a tapered article
US-2018134370-A1 · May 17, 2018 · US
Method for machining materials by milling and subsequent brushing
US-9919404-B2 · Mar 20, 2018 · US
Belt sheave and method of imprinting
US-2018057314-A1 · Mar 1, 2018 · US
Sheave knurling tool and method of operating
US-2018056368-A1 · Mar 1, 2018 · US
Deep rolling forming
US-9902482-B2 · Feb 27, 2018 · US
Method of forming a component
US-2018043434-A1 · Feb 15, 2018 · US
Repair article of a gas turbine engine
US-9885240-B2 · Feb 6, 2018 · US
Method for machining a surface region of a rolling bearing ring, and rolling bearing ring and rolling bearing
US-9868186-B2 · Jan 16, 2018 · US
Deep roll peening system and method
US-2017348821-A1 · Dec 7, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B23P9/02?
- CPC B23P9/02 is the Cooperative Patent Classification code for “Treating or finishing by applying pressure, e.g. knurling (B23P9/04 takes precedence).”
- How many patents are filed under CPC B23P9/02 (Treating or finishing by applying pressure, e.g. knurling (B23P9/04 takes precedence))?
- Our database includes 126 publications tagged with this CPC code.
- Is patent activity under CPC B23P9/02 growing?
- Publication counts under this code: 9 in 2024 vs 6 in 2025 (latest complete years).