Girth welded joint of steel pipe
US-2024353033-A1 · Oct 24, 2024 · US
with niobium or tantalum
with niobium or tantalum · 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 | C22C38/48 |
| Official title | with niobium or tantalum |
| Display label | with niobium or tantalum |
| Total patents | 3,217 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 143 |
| 2016 | 183 |
| 2017 | 226 |
| 2018 | 243 |
| 2019 | 309 |
| 2020 | 306 |
| 2021 | 318 |
| 2022 | 420 |
| 2023 | 325 |
| 2024 | 329 |
| 2025 | 343 |
| 2026 | 72 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Low-density clad steel sheet having excellent formability and fatigue property and manufacturing method therefor
US-2024326399-A1 · Oct 3, 2024 · US
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
Hot-rolled steel sheet for high strength linepipe
US-2015368736-A1 · Dec 24, 2015 · US
Steel for tracked undercarriage component, and track link
US-2015361534-A1 · Dec 17, 2015 · US
Austenitic steel welded joint
US-9211601-B2 · Dec 15, 2015 · US
Duplex stainless steel material and duplex stainless steel pipe
US-2015354038-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
Lean austenitic stainless steel containing stabilizing elements
US-2015337422-A1 · Nov 26, 2015 · US
Tool for piercing mill
US-9194031-B2 · Nov 24, 2015 · US
Metal strip
US-2015328675-A1 · Nov 19, 2015 · US
Creep resistant high temperature martensitic steel
US-9181597-B1 · Nov 10, 2015 · US
Precipitation hardened martensitic stainless steel, manufacturing method therefor, and turbine moving blade and steam turbine using the same
US-2015315921-A1 · Nov 5, 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
Method for manufacturing galvanized steel sheet
US-2015315692-A1 · Nov 5, 2015 · US
Seamless steel pipe and method for producing same
US-2015315685-A1 · Nov 5, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22C38/48?
- CPC C22C38/48 is the Cooperative Patent Classification code for “with niobium or tantalum.”
- How many patents are filed under CPC C22C38/48 (with niobium or tantalum)?
- Our database includes 3,217 publications tagged with this CPC code.
- Is patent activity under CPC C22C38/48 growing?
- Publication counts under this code: 329 in 2024 vs 343 in 2025 (latest complete years).