Grain-oriented electrical steel sheet
US-10434606-B2 · Oct 8, 2019 · US
involving a particular surface treatment (C21D8/1294 takes precedence)
involving a particular surface treatment (C21D8/1294 takes precedence) · 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 | C21D8/1277 |
| Official title | involving a particular surface treatment (C21D8/1294 takes precedence) |
| Display label | involving a particular surface treatment (C21D8/1294 takes precedence) |
| Total patents | 310 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 13 |
| 2017 | 9 |
| 2018 | 23 |
| 2019 | 22 |
| 2020 | 15 |
| 2021 | 27 |
| 2022 | 51 |
| 2023 | 33 |
| 2024 | 46 |
| 2025 | 53 |
| 2026 | 10 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Grain oriented electrical steel sheet, method for manufacturing grain oriented electrical steel sheets, method for evaluating grain oriented electrical steel sheets, and iron core
US-2019292623-A1 · Sep 26, 2019 · US
Multi-phase magnetic component and method of forming
US-10229776-B2 · Mar 12, 2019 · US
Method for refining magnetic domains of grain-oriented electrical steel plates, and apparatus therefor
US-2019054570-A1 · Feb 21, 2019 · US
Grain-oriented electrical steel sheet and manufacturing method thereof
US-10208372-B2 · Feb 19, 2019 · US
Method for producing grain-oriented electrical steel sheet
US-10192662-B2 · Jan 29, 2019 · US
Method of producing grain-oriented electrical steel sheet and production line therefor
US-2019017139-A1 · Jan 17, 2019 · US
Grain-oriented magnetic steel sheet and method of producing the same
US-10131018-B2 · Nov 20, 2018 · US
Method of scale substrate manufacture
US-10072943-B2 · Sep 11, 2018 · US
Preparation method of oriented high silicon steel
US-10032548-B2 · Jul 24, 2018 · US
Grain-oriented electrical steel sheet and method for producing the same
US-2018202018-A1 · Jul 19, 2018 · US
Grain-oriented electrical steel sheet for iron core and method of manufacturing the same
US-10026533-B2 · Jul 17, 2018 · US
Method for manufacturing magnetostrictive torque sensor shaft
US-2018195142-A1 · Jul 12, 2018 · US
Grain-oriented electrical steel sheet and manufacturing method thereof
US-10011886-B2 · Jul 3, 2018 · US
Linear groove formation method and linear groove formation device
US-2018147663-A1 · May 31, 2018 · US
Coating device and coating method
US-9968957-B2 · May 15, 2018 · US
Coil and electrical strip or electrical sheet
US-2018122573-A1 · May 3, 2018 · US
Magnetic steel sheet having a layer improving the electrical insulation and method for the production thereof
US-9959959-B2 · May 1, 2018 · US
Hot-rolled steel sheet for production of non-oriented electrical steel sheet and method of manufacturing same
US-9947446-B2 · Apr 17, 2018 · US
Grain-oriented electrical steel sheet
US-2018071869-A1 · Mar 15, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21D8/1277?
- CPC C21D8/1277 is the Cooperative Patent Classification code for “involving a particular surface treatment (C21D8/1294 takes precedence).”
- How many patents are filed under CPC C21D8/1277 (involving a particular surface treatment (C21D8/1294 takes precedence))?
- Our database includes 310 publications tagged with this CPC code.
- Is patent activity under CPC C21D8/1277 growing?
- Publication counts under this code: 46 in 2024 vs 53 in 2025 (latest complete years).