Girth welded joint of steel pipe
US-2024353033-A1 · Oct 24, 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 | C22C38/42 |
| Official title | with copper |
| Display label | with copper |
| Total patents | 3,526 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 182 |
| 2016 | 229 |
| 2017 | 243 |
| 2018 | 277 |
| 2019 | 330 |
| 2020 | 351 |
| 2021 | 315 |
| 2022 | 451 |
| 2023 | 348 |
| 2024 | 355 |
| 2025 | 363 |
| 2026 | 82 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Non-oriented silicon steel and method for producing the same
US-2024279782-A1 · Aug 22, 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
Non-thermal refined soft-nitrided component
US-2015376763-A1 · Dec 31, 2015 · US
Hot-rolled steel sheet for high strength linepipe
US-2015368736-A1 · Dec 24, 2015 · US
Method and facility for manufacturing seamless steel pipe with excellent toughness
US-2015368734-A1 · Dec 24, 2015 · US
Method for manufacturing grain oriented electrical steel sheet
US-9214275-B2 · Dec 15, 2015 · US
Duplex stainless steel material and duplex stainless steel pipe
US-2015354038-A1 · Dec 10, 2015 · US
Improved water-soluble polymer dispersion appliance
US-2015352507-A1 · Dec 10, 2015 · US
Hot-rolled steel sheet and manufacturing method thereof
US-9200342-B2 · Dec 1, 2015 · US
Lean austenitic stainless steel
US-2015337421-A1 · Nov 26, 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
Metal strip
US-2015328675-A1 · Nov 19, 2015 · US
High-strength stainless steel seamless tube or pipe for oil country tubular goods, and method of manufacturing the same
US-2015315684-A1 · Nov 5, 2015 · US
Super high-strength flux cored arc welded joint having excellent impact toughness, and welding wire for manufacturing same
US-2015314397-A1 · Nov 5, 2015 · US
Method for manufacturing galvanized steel sheet
US-2015315692-A1 · Nov 5, 2015 · US
Austenitic high Mn stainless steel and method production of same and member using that steel
US-9175361-B2 · Nov 3, 2015 · US
Metal substrate, fixing member, and heat-fixing device
US-2015309458-A1 · Oct 29, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22C38/42?
- CPC C22C38/42 is the Cooperative Patent Classification code for “with copper.”
- How many patents are filed under CPC C22C38/42 (with copper)?
- Our database includes 3,526 publications tagged with this CPC code.
- Is patent activity under CPC C22C38/42 growing?
- Publication counts under this code: 355 in 2024 vs 363 in 2025 (latest complete years).