Non-oriented silicon steel and method for producing the same
US-2024279782-A1 · Aug 22, 2024 · US
with copper
with copper · 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 | C22C38/20 |
| Official title | with copper |
| Display label | with copper |
| Total patents | 1,508 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 90 |
| 2016 | 93 |
| 2017 | 90 |
| 2018 | 132 |
| 2019 | 114 |
| 2020 | 166 |
| 2021 | 152 |
| 2022 | 182 |
| 2023 | 134 |
| 2024 | 149 |
| 2025 | 162 |
| 2026 | 44 |
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
Steel material and mold
US-2024133005-A1 · Apr 25, 2024 · US
Steel for rails and a method of manufacturing of a rail thereof
US-2024002966-A1 · Jan 4, 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-rolled steel sheet for high strength linepipe
US-2015368736-A1 · Dec 24, 2015 · US
Weld metal and welded structure
US-2015368767-A1 · Dec 24, 2015 · US
Forced water cooling of thick steel wires
US-2015361536-A1 · Dec 17, 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
Method for manufacturing an ultra-highstrength steel bar
US-9200353-B2 · Dec 1, 2015 · US
Steel for machine structural use, manufacturing method for same, case hardened steel component, and manufacturing method for same
US-9200357-B2 · Dec 1, 2015 · US
High-strength steel sheet with excellent deep drawability at room temperature and warm temperature, and method for warm working same
US-9194032-B2 · Nov 24, 2015 · US
Method for manufacturing galvanized steel sheet
US-2015315692-A1 · Nov 5, 2015 · US
Steel for mold, and mold
US-2015314366-A1 · Nov 5, 2015 · US
Seamless steel pipe and method for producing same
US-2015315685-A1 · Nov 5, 2015 · US
High strength steel sheet having excellent cryogenic temperature toughness and low yield ratio properties, and method for manufacturing same
US-2015315682-A1 · Nov 5, 2015 · US
Production method for grain-oriented electrical steel sheet
US-2015299819-A1 · Oct 22, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22C38/20?
- CPC C22C38/20 is the Cooperative Patent Classification code for “with copper.”
- How many patents are filed under CPC C22C38/20 (with copper)?
- Our database includes 1,508 publications tagged with this CPC code.
- Is patent activity under CPC C22C38/20 growing?
- Publication counts under this code: 149 in 2024 vs 162 in 2025 (latest complete years).