Double-oriented electrical steel sheet and manufacturing method therefor
US-12559807-B2 · Feb 24, 2026 · US
Temporary coatings or embedding materials applied before or during heat treatment
Temporary coatings or embedding materials applied before or during heat treatment · 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 | C21D1/68 |
| Official title | Temporary coatings or embedding materials applied before or during heat treatment |
| Display label | Temporary coatings or embedding materials applied before or during heat treatment |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 3 |
| 2017 | 8 |
| 2018 | 4 |
| 2019 | 4 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 10 |
| 2023 | 7 |
| 2024 | 6 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Modified hot-dip galvanize coatings with low liquidus temperature, methods of making and using the same
US-12540383-B2 · Feb 3, 2026 · US
Grain-oriented electrical steel sheet and method for producing same
US-12448672-B2 · Oct 21, 2025 · US
Non-oriented electrical steel sheet and method for manufacturing same
US-12371757-B2 · Jul 29, 2025 · US
Method for producing grain-oriented electrical steel sheet
US-12338504-B2 · Jun 24, 2025 · US
Grain-oriented electrical steel sheet and manufacturing method therefor
US-12331370-B2 · Jun 17, 2025 · US
High-strength cold-rolled steel sheet having excellent bending workability and manufacturing method therefor
US-2025066870-A1 · Feb 27, 2025 · US
High-strength cold-rolled steel sheet having excellent bending workability and manufacturing method therefor
US-12168810-B2 · Dec 17, 2024 · US
Grain-oriented electrical steel sheet and production method therefor
US-12104217-B2 · Oct 1, 2024 · US
Annealing separating agent composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet, and method for manufacturing grain oriented electrical steel sheet
US-11946114-B2 · Apr 2, 2024 · US
Low-Magnetostrictive Oriented Silicon Steel and Manufacturing Method Therefor
US-2024071661-A1 · Feb 29, 2024 · US
Grain-oriented electrical steel sheet and production method therefor
US-2024052447-A1 · Feb 15, 2024 · US
Modified hot-dip galvanize coatings with low liquidus temperature, methods of making and using the same
US-2024002994-A1 · Jan 4, 2024 · US
Annealing separator composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet, and method for producing grain-oriented electrical steel sheet
US-2023407432-A1 · Dec 21, 2023 · US
Annealing separator composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet, and method for producing grain-oriented electrical steel sheet
US-11773462-B2 · Oct 3, 2023 · US
Double-oriented electrical steel sheet, and method for producing same
US-2023060392-A1 · Mar 2, 2023 · US
Annealing separator for oriented electrical steel sheet, oriented electrical steel sheet, and manufacturing method of oriented electrical steel sheet
US-2023042915-A1 · Feb 9, 2023 · US
Grain-oriented electrical steel sheet and method for producing same
US-2023036436-A1 · Feb 2, 2023 · US
Double-oriented electrical steel sheet and manufacturing method therefor
US-2023035269-A1 · Feb 2, 2023 · US
Grain-oriented electrical steel sheet and manufacturing method therefor
US-2023029310-A1 · Jan 26, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21D1/68?
- CPC C21D1/68 is the Cooperative Patent Classification code for “Temporary coatings or embedding materials applied before or during heat treatment.”
- How many patents are filed under CPC C21D1/68 (Temporary coatings or embedding materials applied before or during heat treatment)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC C21D1/68 growing?
- Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).