Non-oriented silicon steel and method for producing the same
US-2024279782-A1 · Aug 22, 2024 · US
Normalising
Normalising · 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 | C21D1/28 |
| Official title | Normalising |
| Display label | Normalising |
| Total patents | 197 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 9 |
| 2017 | 10 |
| 2018 | 11 |
| 2019 | 20 |
| 2020 | 16 |
| 2021 | 18 |
| 2022 | 36 |
| 2023 | 15 |
| 2024 | 32 |
| 2025 | 17 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Steel for rails and a method of manufacturing of a rail thereof
US-2024002966-A1 · Jan 4, 2024 · US
Heavy-wall steel plate having 450mpa-grade tensile strength and excellent resistance to hydrogen induced cracking and method for manufacturing same
US-2019382865-A1 · Dec 19, 2019 · US
Pressure vessel steel sheet having excellent pwht resistance, and manufacturing method therefor
US-2019368012-A1 · Dec 5, 2019 · US
Low alloy high performance steel
US-10450621-B2 · Oct 22, 2019 · US
Rail vehicle axle
US-10392683-B2 · Aug 27, 2019 · US
Spinning roller surface laser reinforced processing forming method
US-10384311-B2 · Aug 20, 2019 · US
High temperature steel for steam turbine and other applications
US-10316379-B2 · Jun 11, 2019 · US
Seamless steel tube for fuel injection
US-10308994-B2 · Jun 4, 2019 · US
High-strength hot-rolled steel sheet and method for producing the same
US-10301693-B2 · May 28, 2019 · US
Steel sheet, coated steel sheet, and methods for manufacturing same
US-2019106760-A1 · Apr 11, 2019 · US
Method for Producing Components from a Duplex Steel, and Components Produced Using Said Method
US-2019084043-A1 · Mar 21, 2019 · US
High-strength low-alloy steel excellent in high-pressure hydrogen environment embrittlement resistance characteristics and method for producing the same
US-10227682-B2 · Mar 12, 2019 · US
High-strength cold rolled steel sheet and method of producing same
US-2019062863-A1 · Feb 28, 2019 · US
Steel for nitrocarburizing, nitrocarburized steel part, and producing method of nitrocarburized steel part
US-10196720-B2 · Feb 5, 2019 · US
Steel material having excellent hydrogen-induced cracking (hic) resistance for pressure vessel and manufacturing method therefor
US-2019024206-A1 · Jan 24, 2019 · US
Ferritic stainless steel and heat-resistant member
US-2019017132-A1 · Jan 17, 2019 · US
Production method for rare earth permanent magnet
US-10179955-B2 · Jan 15, 2019 · US
Stainless steel for polymer fuel cell separation plate having improved hydrophilicity and contact resistance and method for manufacturing same
US-2019013525-A1 · Jan 10, 2019 · US
Method for producing bearing ring, double row tapered roller bearing, and method for producing double row tapered roller bearing
US-2018347623-A1 · Dec 6, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21D1/28?
- CPC C21D1/28 is the Cooperative Patent Classification code for “Normalising.”
- How many patents are filed under CPC C21D1/28 (Normalising)?
- Our database includes 197 publications tagged with this CPC code.
- Is patent activity under CPC C21D1/28 growing?
- Publication counts under this code: 32 in 2024 vs 17 in 2025 (latest complete years).