Non-grain-oriented electrical steel sheet, method for punching non-grain-oriented electrical steel sheet and die for punching non-grain-oriented electrical steel sheet
US-2024309498-A1 · Sep 19, 2024 · US
characterised by the working steps
characterised by the working steps · 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 | C21D8/1216 |
| Official title | characterised by the working steps |
| Display label | characterised by the working steps |
| Total patents | 72 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 5 |
| 2017 | 5 |
| 2018 | 2 |
| 2019 | 6 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 11 |
| 2023 | 10 |
| 2024 | 10 |
| 2025 | 7 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Grain-oriented electrical steel sheet
US-12065713-B2 · Aug 20, 2024 · US
Electrical steel sheet with insulating film
US-2024102172-A1 · Mar 28, 2024 · US
Low-Magnetostrictive Oriented Silicon Steel and Manufacturing Method Therefor
US-2024071661-A1 · Feb 29, 2024 · US
Stainless steel bar material and electromagnetic component
US-2024011137-A1 · Jan 11, 2024 · US
Grain oriented electrical steel sheet, forming method for insulation coating of grain oriented electrical steel sheet, and producing method for grain oriented electrical steel sheet
US-11866812-B2 · Jan 9, 2024 · US
Method for manufacturing magnetostrictive torque sensor shaft
US-11866798-B2 · Jan 9, 2024 · US
Grain oriented electrical steel sheet
US-11851726-B2 · Dec 26, 2023 · US
Non-oriented electrical steel sheet and method of manufacturing stacked core using same
US-11795518-B2 · Oct 24, 2023 · US
Grain oriented electrical steel sheet
US-11753691-B2 · Sep 12, 2023 · US
Non oriented electrical steel sheet, iron core, manufacturing method of iron core, motor, and manufacturing method of motor
US-11749429-B2 · Sep 5, 2023 · US
Soft magnetic member and intermediate therefor, methods respectively for producing said member and said intermediate, and alloy for soft magnetic member
US-2023257859-A1 · Aug 17, 2023 · US
Grain-oriented electrical steel sheet
US-11651878-B2 · May 16, 2023 · US
Non oriented electrical steel sheet, iron core, manufacturing method of iron core, motor, and manufacturing method of motor
US-2023110399-A1 · Apr 13, 2023 · US
Grain oriented electrical steel sheet
US-2023071853-A1 · Mar 9, 2023 · US
Grain-oriented electrical steel sheet and magnetic domain refinement method thereof
US-2023060105-A1 · Feb 23, 2023 · US
Grain-oriented electrical steel sheet and method of manufacturing same
US-2023042199-A1 · Feb 9, 2023 · US
Laminated core and electrical device
US-2022384085-A1 · Dec 1, 2022 · US
Rotor core, rotor, and rotating electric machine
US-2022385118-A1 · Dec 1, 2022 · US
Grain oriented electrical steel sheet
US-2022372589-A1 · Nov 24, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21D8/1216?
- CPC C21D8/1216 is the Cooperative Patent Classification code for “characterised by the working steps.”
- How many patents are filed under CPC C21D8/1216 (characterised by the working steps)?
- Our database includes 72 publications tagged with this CPC code.
- Is patent activity under CPC C21D8/1216 growing?
- Publication counts under this code: 10 in 2024 vs 7 in 2025 (latest complete years).