Method for producing grained iron, and grained iron
US-2025243554-A1 · Jul 31, 2025 · US
This page is not indexed by search engines while we improve data quality.
Making pig-iron other than in blast furnaces
Making pig-iron other than in blast furnaces · 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 | C21B11/00 |
| Official title | Making pig-iron other than in blast furnaces |
| Display label | Making pig-iron other than in blast furnaces |
| Total patents | 18 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 4 |
| 2020 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of reducing iron ore powder
US-2025163525-A1 · May 22, 2025 · US
Oxygen-enriched burner and method for heating using oxygen-enriched burner
US-2020363059-A1 · Nov 19, 2020 · US
Molten iron manufacturing apparatus and molten iron manufacturing method
US-10422582-B2 · Sep 24, 2019 · US
Method for converting and separating vanadium, titanium, and iron from vanadium-titanium-iron concentrate in one step
US-10316392-B2 · Jun 11, 2019 · US
System and method for fluidized bed reduction of powdered iron ore
US-10233510-B2 · Mar 19, 2019 · US
System and method for fluidized reduction of iron ore powder
US-10202662-B2 · Feb 12, 2019 · US
Method for recovering rare earth element
US-10023938-B2 · Jul 17, 2018 · US
Method for producing pellets and method for producing iron-nickel alloy
US-9938604-B2 · Apr 10, 2018 · US
Method and apparatus for treating iron-contained raw material using bath smelting furnace
US-2018087120-A1 · Mar 29, 2018 · US
Method for converting and separating vanadium, titanium, and iron from vanadium-titanium-iron concentrate in one step
US-2017218479-A1 · Aug 3, 2017 · US
Method for producing pellets and method for producing iron-nickel alloy
US-2017211166-A1 · Jul 27, 2017 · US
System and method for fluidized reduction of iron ore powder
US-2016369360-A1 · Dec 22, 2016 · US
Method and device for introducing fine particle-shaped material into the fluidised bed of a fluidised bed reduction unit
US-9512496-B2 · Dec 6, 2016 · US
Method for recovering rare earth element
US-2016108498-A1 · Apr 21, 2016 · US
Apparatus for conveying and pre-heating a metal charge for a melting plant and connected method
US-9316444-B2 · Apr 19, 2016 · US
Molten iron manufacturing apparatus and molten iron manufacturing method
US-2015345870-A1 · Dec 3, 2015 · US
Apparatus for conveying and pre-heating a metal charge for a melting plant and connected method
US-2015308746-A1 · Oct 29, 2015 · US