Method for treating desulfurization slag
US-10174389-B2 · Jan 8, 2019 · US
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Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C21B2100/04 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 22 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 9 |
| 2017 | 3 |
| 2018 | 5 |
| 2019 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Device for producing partially reduced iron
US-10155997-B2 · Dec 18, 2018 · US
Method for operation of blast furnace
US-10106863-B2 · Oct 23, 2018 · US
Method for operating a top gas recycling blast furnace installation
US-10072312-B2 · Sep 11, 2018 · US
Reformer gas-based reducing method with reduced NOx emission
US-10030911-B2 · Jul 24, 2018 · US
Burning apparatus and method for manufacturing reduced iron using the same
US-9976806-B2 · May 22, 2018 · US
Process for producing direct reduced iron (DRI) utilizing gases derived from coal
US-9546409-B2 · Jan 17, 2017 · US
Method for operating a top gas recycling blast furnace installation
US-2017002434-A1 · Jan 5, 2017 · US
System for energy optimization in a plant for producing direct-reduced metal ores
US-9534264-B2 · Jan 3, 2017 · US
Method for operation of blast furnace
US-2016326604-A1 · Nov 10, 2016 · US
Combined system for producing steel and method for operating the combined system
US-2016319383-A1 · Nov 3, 2016 · US
Device for producing partially reduced iron
US-2016304977-A1 · Oct 20, 2016 · US
Method For Treating Desulfurization Slag
US-2016289783-A1 · Oct 6, 2016 · US
Method for treating waste gases from plants for pig iron production
US-9377242-B2 · Jun 28, 2016 · US
Process and device for charging into a smelting unit
US-9365906-B2 · Jun 14, 2016 · US
Combined pre-treatment process for enabling feed material to be charged in direct reduction processes
US-9347109-B2 · May 24, 2016 · US
Carbon dioxide reduction in steelworks
US-9322597-B2 · Apr 26, 2016 · US
Process for direct reduction of iron oxide
US-9273368-B2 · Mar 1, 2016 · US
Process for regulating joule value of offgases from plants for pig iron production or of synthesis gas
US-9222042-B2 · Dec 29, 2015 · US
Burning Apparatus and Method for Manufacturing Reduced Iron Using the Same
US-2015115508-A1 · Apr 30, 2015 · US