Method for producing grain-oriented electrical steel sheet
US-2024247347-A1 · Jul 25, 2024 · US
Decarburising
Decarburising · 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 | C21D3/04 |
| Official title | Decarburising |
| Display label | Decarburising |
| Total patents | 322 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 16 |
| 2017 | 11 |
| 2018 | 21 |
| 2019 | 22 |
| 2020 | 14 |
| 2021 | 28 |
| 2022 | 53 |
| 2023 | 43 |
| 2024 | 51 |
| 2025 | 43 |
| 2026 | 13 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of producing a motor vehicle component from a high-strength steel alloy having ductile properties and motor vehicle component
US-2019366407-A1 · Dec 5, 2019 · US
Grain-oriented electrical steel sheet
US-10434606-B2 · Oct 8, 2019 · US
Multilayer steel and method of reducing liquid metal embrittlement
US-10329639-B2 · Jun 25, 2019 · US
Hot-pressed steel sheet member
US-10273555-B2 · Apr 30, 2019 · US
Annealing separator for oriented electrical steel sheet, oriented electrical steel sheet, and manufacturing method of oriented electrical steel sheet
US-2018371576-A1 · Dec 27, 2018 · US
Steel bar
US-10131965-B2 · Nov 20, 2018 · US
Method for producing grain-oriented electrical steel sheet
US-10134514-B2 · Nov 20, 2018 · US
Hot-dip galvanized steel sheet
US-10113223-B2 · Oct 30, 2018 · US
Grain-oriented electrical steel sheet and decarburized steel sheet used for manufacturing the same
US-2018305784-A1 · Oct 25, 2018 · US
Method of manufacturing grain-oriented electrical steel sheet
US-2018282830-A1 · Oct 4, 2018 · US
Mitigating liquid metal embrittlement in zinc-coated press hardened steels
US-2018237877-A1 · Aug 23, 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, and method for manufacturing the same
US-10023932-B2 · Jul 17, 2018 · US
Iron powder for dust cores
US-10010935-B2 · Jul 3, 2018 · US
Coil spring steel
US-2018163287-A1 · Jun 14, 2018 · US
Grain-oriented electrical steel sheet, manufacturing method therefor, and method for predicting transformer noise property
US-2018119244-A1 · May 3, 2018 · US
Precoated sheets for manufacturing press-hardened coated steel parts
US-9957582-B2 · May 1, 2018 · US
Decarburized self-piercing rivet
US-2018080096-A1 · Mar 22, 2018 · US
Grain-oriented electrical steel sheet
US-2018066334-A1 · Mar 8, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21D3/04?
- CPC C21D3/04 is the Cooperative Patent Classification code for “Decarburising.”
- How many patents are filed under CPC C21D3/04 (Decarburising)?
- Our database includes 322 publications tagged with this CPC code.
- Is patent activity under CPC C21D3/04 growing?
- Publication counts under this code: 51 in 2024 vs 43 in 2025 (latest complete years).