Braking band of a disk for disk brake
US-12449011-B2 · Oct 21, 2025 · US
of ferrous surfaces
of ferrous surfaces · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C23C8/56 |
| Official title | of ferrous surfaces |
| Display label | of ferrous surfaces |
| Total patents | 38 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 2 |
| 2017 | 4 |
| 2018 | 7 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for treating a part made of iron alloy for improving the anti-corrosion properties thereof
US-2025171906-A1 · May 29, 2025 · US
Method for treating a part made of ferrous metal, and part made of ferrous metal
US-12276032-B2 · Apr 15, 2025 · US
Guiding member, mechanical system comprising such a guiding member, and method for producing such a guiding member
US-12098744-B2 · Sep 24, 2024 · US
Sliding spline shaft device
US-11927225-B2 · Mar 12, 2024 · US
Method for treating a part made of ferrous metal, and part made of ferrous metal
US-2023029324-A1 · Jan 26, 2023 · US
Braking band of a disk for disk brake
US-2023018275-A1 · Jan 19, 2023 · US
Guiding Member, Mechanical System Comprising Such A Guiding Member, And Method For Producing Such A Guiding Member
US-2022220999-A1 · Jul 14, 2022 · US
Ferritic Nitro-Carburized Track Pin for Track Chain Assembly of Machine
US-2022106000-A1 · Apr 7, 2022 · US
Sliding spline shaft device
US-2021199158-A1 · Jul 1, 2021 · US
Durable and low maintenance valve
US-2021148471-A1 · May 20, 2021 · US
Sliding member and method for producing same
US-11007572-B2 · May 18, 2021 · US
Coating system for tubular gripping components
US-10876196-B2 · Dec 29, 2020 · US
Ferritic nitrocarburized part and methods of making and using the same
US-10870910-B2 · Dec 22, 2020 · US
Method for producing a swashplate
US-10792733-B2 · Oct 6, 2020 · US
Modified surface properties of percussion tools used in downhole drilling
US-10590525-B2 · Mar 17, 2020 · US
Ferritic nitrocarburized part and methods of making and using the same
US-2019211435-A1 · Jul 11, 2019 · US
Coating system for tubular gripping components
US-2019136362-A1 · May 9, 2019 · US
Ferritic nitrocarburized vehicle component and methods of making and using the same
US-2019017161-A1 · Jan 17, 2019 · US
Electric power steering device and manufacturing method therefor
US-2018319434-A1 · Nov 8, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23C8/56?
- CPC C23C8/56 is the Cooperative Patent Classification code for “of ferrous surfaces.”
- How many patents are filed under CPC C23C8/56 (of ferrous surfaces)?
- Our database includes 38 publications tagged with this CPC code.
- Is patent activity under CPC C23C8/56 growing?
- Publication counts under this code: 2 in 2024 vs 3 in 2025 (latest complete years).