High-strength cold-rolled steel sheet having excellent surface quality and low material variation, and method for manufacturing same
US-2024384366-A1 · Nov 21, 2024 · US
containing Cr (C21D6/004 takes precedence)
containing Cr (C21D6/004 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 | C21D6/002 |
| Official title | {containing Cr (C21D6/004 takes precedence)} |
| Display label | containing Cr (C21D6/004 takes precedence) |
| Total patents | 1,970 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 117 |
| 2016 | 106 |
| 2017 | 113 |
| 2018 | 153 |
| 2019 | 171 |
| 2020 | 184 |
| 2021 | 162 |
| 2022 | 226 |
| 2023 | 214 |
| 2024 | 236 |
| 2025 | 225 |
| 2026 | 63 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of producing grain-oriented electrical steel sheet
US-2024249863-A1 · Jul 25, 2024 · US
A zinc or zinc-alloy coated strip or steel with improved zinc adhesion
US-2024117455-A1 · Apr 11, 2024 · US
Ferritic stainless steel sheet which is excellent in workability and method of production of same
US-2015376732-A1 · Dec 31, 2015 · US
Hot-rolled steel sheet and manufacturing method thereof
US-2015376730-A1 · Dec 31, 2015 · US
Non-thermal refined soft-nitrided component
US-2015376763-A1 · Dec 31, 2015 · US
Nano-Pearlite Rail and Process for Manufacturing Same
US-2015368765-A1 · Dec 24, 2015 · US
Hot stamping product with enhanced toughness and method for manufacturing the same
US-2015361532-A1 · Dec 17, 2015 · US
Forced water cooling of thick steel wires
US-2015361536-A1 · Dec 17, 2015 · US
Steel sheet for soft-nitriding and method for manufacturing the same
US-2015354034-A1 · Dec 10, 2015 · US
High strength austenitic-based steel with remarkable toughness of welding heat-affected zone and preparation method therefor
US-2015354037-A1 · Dec 10, 2015 · US
Grain oriented electrical steel sheet having excellent core loss, and method for manufacturing same
US-2015340137-A1 · Nov 26, 2015 · US
Method for producing steel material for friction welding
US-9194033-B2 · Nov 24, 2015 · US
High strength cold rolled steel sheet with low yield ratio and method of manufacturing the same
US-2015322552-A1 · Nov 12, 2015 · US
Creep resistant high temperature martensitic steel
US-9181597-B1 · Nov 10, 2015 · US
Seamless steel pipe and method for producing same
US-2015315685-A1 · Nov 5, 2015 · US
Stainless steel sheet and stainless steel foil
US-2015299833-A1 · Oct 22, 2015 · US
Production method for grain-oriented electrical steel sheet
US-2015299819-A1 · Oct 22, 2015 · US
Steel sheet for soft-nitriding and method for manufacturing the same
US-2015299830-A1 · Oct 22, 2015 · US
Powder metal compositions for wear and temperature resistance applications and method of producing same
US-9162285-B2 · Oct 20, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21D6/002?
- CPC C21D6/002 is the Cooperative Patent Classification code for “containing Cr (C21D6/004 takes precedence).”
- How many patents are filed under CPC C21D6/002 (containing Cr (C21D6/004 takes precedence))?
- Our database includes 1,970 publications tagged with this CPC code.
- Is patent activity under CPC C21D6/002 growing?
- Publication counts under this code: 236 in 2024 vs 225 in 2025 (latest complete years).