A method of manufacturing of a steel product in several steelmaking units
US-2024132984-A1 · Apr 25, 2024 · US
using top gas in the blast furnace process
using top gas in the blast furnace process · 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 | C21B5/06 |
| Official title | using top gas in the blast furnace process |
| Display label | using top gas in the blast furnace process |
| Total patents | 106 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 11 |
| 2017 | 7 |
| 2018 | 6 |
| 2019 | 2 |
| 2020 | 7 |
| 2021 | 4 |
| 2022 | 9 |
| 2023 | 12 |
| 2024 | 18 |
| 2025 | 20 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Device to inject a reducing gas into a shaft furnace
US-2023366049-A1 · Nov 16, 2023 · US
Blast furnace for ironmaking production
US-2023366047-A1 · Nov 16, 2023 · US
Blast furnace for ironmaking production
US-2023349014-A1 · Nov 2, 2023 · US
Modular direct reduction systems and associated methods
US-2023295755-A1 · Sep 21, 2023 · US
A direct reduction system and relative process
US-2023243004-A1 · Aug 3, 2023 · US
System network and method for operating a system network of this type for producing higher alcohols
US-2023219815-A1 · Jul 13, 2023 · US
Steelmaking line and method of producing reduced iron
US-2023175084-A1 · Jun 8, 2023 · US
Method for operating a metallurgical furnace
US-11591662-B2 · Feb 28, 2023 · US
Method of operating blast furnace and blast furnace ancillary facility
US-2023034442-A1 · Feb 2, 2023 · US
Method for converting a blast furnace plant
US-2023008316-A1 · Jan 12, 2023 · US
Blast furnace operation method
US-2022403477-A1 · Dec 22, 2022 · US
Method and corresponding apparatus for producing iron from direct reduction of iron ore
US-2022396843-A1 · Dec 15, 2022 · US
System and method for producing steel
US-2022307096-A1 · Sep 29, 2022 · US
Gas production apparatus, gas production system, steel production system, chemical production system, and gas production method
US-2022305439-A1 · Sep 29, 2022 · US
Method for operating an iron- or steelmaking- plant
US-11377700-B2 · Jul 5, 2022 · US
Method for operation of blast furnace
US-2022177985-A1 · Jun 9, 2022 · US
Method for operating a metallurgical furnace
US-2022145411-A1 · May 12, 2022 · US
Method for operating a blast furnace
US-2022145410-A1 · May 12, 2022 · US
Blast furnace operation method
US-2022119899-A1 · Apr 21, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21B5/06?
- CPC C21B5/06 is the Cooperative Patent Classification code for “using top gas in the blast furnace process.”
- How many patents are filed under CPC C21B5/06 (using top gas in the blast furnace process)?
- Our database includes 106 publications tagged with this CPC code.
- Is patent activity under CPC C21B5/06 growing?
- Publication counts under this code: 18 in 2024 vs 20 in 2025 (latest complete years).