Double-oriented electrical steel sheet and manufacturing method therefor
US-12559807-B2 · Feb 24, 2026 · US
while heating or quenching
while heating or quenching · 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 | C21D1/70 |
| Official title | while heating or quenching |
| Display label | while heating or quenching |
| Total patents | 63 |
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 | 5 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 4 |
| 2020 | 4 |
| 2021 | 1 |
| 2022 | 11 |
| 2023 | 9 |
| 2024 | 9 |
| 2025 | 6 |
| 2026 | 6 |
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
Steel sheet for hot stamping and hot-stamped member
US-12522929-B2 · Jan 13, 2026 · US
Coated steel substrate
US-12473609-B2 · Nov 18, 2025 · US
Overlapped blank for hot stamping and overlapped hot stamped component
US-2025262841-A1 · Aug 21, 2025 · US
Grain-oriented electrical steel sheet, method for manufacturing grain-oriented electrical steel sheet, and annealing separator utilized for manufacture of grain-oriented electrical steel sheet
US-2025051891-A1 · Feb 13, 2025 · US
METHOD FOR PRODUCING Cu-Sn-CONTAINING STEEL
US-2025051873-A1 · Feb 13, 2025 · US
Grain-oriented electrical steel sheet, method for manufacturing grain-oriented electrical steel sheet, and annealing separator utilized for manufacture of grain-oriented electrical steel sheet
US-2025043381-A1 · Feb 6, 2025 · US
High-frequency hardening apparatus
US-12200846-B2 · Jan 14, 2025 · US
Grain-oriented electrical steel sheet, method for manufacturing grain-oriented electrical steel sheet, and annealing separator utilized for manufacture of grain-oriented electrical steel sheet
US-12157936-B2 · Dec 3, 2024 · US
Grain-oriented electrical steel sheet, method for manufacturing grain-oriented electrical steel sheet, and annealing separator utilized for manufacture of grain-oriented electrical steel sheet
US-12152286-B2 · Nov 26, 2024 · US
Grain-oriented electrical steel sheet and method for manufacturing same and annealing separator
US-12104219-B2 · Oct 1, 2024 · US
Method for manufacturing grain-oriented electrical steel sheet and grain-oriented electrical steel sheet
US-12091722-B2 · Sep 17, 2024 · US
Grain-oriented electrical steel sheet
US-12065713-B2 · Aug 20, 2024 · US
Steel sheet for hot stamping and hot-stamped member
US-2024150901-A1 · May 9, 2024 · US
Fabrication method for a component having magnetic and non-magnetic dual phases
US-11926880-B2 · Mar 12, 2024 · US
Steel sheet for hot stamping and hot-stamped member
US-2024044012-A1 · Feb 8, 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
Ni-based alloy material
US-2023340644-A1 · Oct 26, 2023 · US
Press hardening method
US-11773464-B2 · Oct 3, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21D1/70?
- CPC C21D1/70 is the Cooperative Patent Classification code for “while heating or quenching.”
- How many patents are filed under CPC C21D1/70 (while heating or quenching)?
- Our database includes 63 publications tagged with this CPC code.
- Is patent activity under CPC C21D1/70 growing?
- Publication counts under this code: 9 in 2024 vs 6 in 2025 (latest complete years).