Method of making a dual hardness steel article
US-10113211-B2 · Oct 30, 2018 · US
Rolling special iron alloys {, e.g. stainless steel}
Rolling special iron alloys {, e.g. stainless steel} · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B21B3/02 |
| Official title | Rolling special iron alloys {, e.g. stainless steel} |
| Display label | Rolling special iron alloys {, e.g. stainless steel} |
| Total patents | 234 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 12 |
| 2017 | 22 |
| 2018 | 24 |
| 2019 | 16 |
| 2020 | 28 |
| 2021 | 24 |
| 2022 | 25 |
| 2023 | 26 |
| 2024 | 18 |
| 2025 | 22 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hot-rolled steel sheet and manufacturing method for same
US-10106873-B2 · Oct 23, 2018 · US
As-rolled type k55 electric resistance welded oil well pipe and hot-rolled steel sheet
US-2018298475-A1 · Oct 18, 2018 · US
Manufacture of semi-finished products and structural components with locally different material thicknesses
US-2018272399-A1 · Sep 27, 2018 · US
High strength stainless steel sheet excellent in fatigue characteristics, and production method therefor
US-2018272397-A1 · Sep 27, 2018 · US
Hot rolled steel sheet and method for manufacturing the same
US-10047416-B2 · Aug 14, 2018 · US
Hot-rolled steel sheet for producing non-oriented electrical steel sheet and method of producing same
US-10026534-B2 · Jul 17, 2018 · US
Ferritic stainless steel and method of manufacturing the same
US-2018179607-A1 · Jun 28, 2018 · US
Method for producing seamless metal tube
US-2018154410-A1 · Jun 7, 2018 · US
Rolled round steel material for steering rack bar, and steering rack bar
US-9976206-B2 · May 22, 2018 · US
Steel sheet
US-2018023172-A1 · Jan 25, 2018 · US
Alloying element-saving hot rolled duplex stainless steel material, clad steel plate having duplex stainless steel as cladding material therefor, and production method for same
US-9862168-B2 · Jan 9, 2018 · US
Thick-walled high-toughness high-strength steel plate and method for manufacturing the same
US-2017369958-A1 · Dec 28, 2017 · US
Method for fabricating steel sheet for press hardening, and parts obtained by this method
US-9845518-B2 · Dec 19, 2017 · US
Hot-rolled steel sheet
US-2017349967-A1 · Dec 7, 2017 · US
Apparatus line for manufacturing seamless steel pipe and tube and method of manufacturing duplex seamless stainless steel pipe
US-2017335422-A1 · Nov 23, 2017 · US
Method for manufacturing grain-oriented electrical steel sheet
US-2017321296-A1 · Nov 9, 2017 · US
Method for manufacturing austenite-ferrite stainless steel with improved machinability
US-9797025-B2 · Oct 24, 2017 · US
Variable thickness continuous casting for tailor rolling
US-2017297092-A1 · Oct 19, 2017 · US
Method for fabricating steel sheet for press hardening, and parts obtained by this method
US-2017298465-A1 · Oct 19, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B21B3/02?
- CPC B21B3/02 is the Cooperative Patent Classification code for “Rolling special iron alloys {, e.g. stainless steel}.”
- How many patents are filed under CPC B21B3/02 (Rolling special iron alloys {, e.g. stainless steel})?
- Our database includes 234 publications tagged with this CPC code.
- Is patent activity under CPC B21B3/02 growing?
- Publication counts under this code: 18 in 2024 vs 22 in 2025 (latest complete years).