ClassID:

118779

C21B13/12 - CPC Classification

Classification description:

Making spongy iron or liquid steel, by direct processes in electric furnaces

Sub-classes:
Recent Application in this class:
#1
20260071288
2026-03-12

Hot Metal Production from DRI with Electric Arc Heating

#2
20260055477
2026-02-26

A DIRECT REDUCTION FACILITY AND A METHOD OF DIRECT REDUCTION OF METAL OXIDE

#3
20260009096
2026-01-08

ELECTRIC FURNACE EQUIPMENT AND METHOD FOR MANUFACTURING MOLTEN METAL

#4
20250369069
2025-12-04

METHOD FOR PRODUCING REDUCED FORM OF METAL OXIDES

#5
20250179596
2025-06-05

BIOMASS DIRECT REDUCED IRON

#6
20250093100
2025-03-20

ELECTRIC FURNACE

#7
20250027179
2025-01-23

System for Direct Reduction of Iron Ore to Sponge Iron

#8
20240425942
2024-12-26

METHOD FOR PRODUCING AGGLOMERATED RAW MATERIAL

#9
20240392400
2024-11-28

METHOD FOR REFINING MOLTEN IRON

#10
20240392398
2024-11-28

METHOD FOR REFINING MOLTEN IRON

#11
20240327936
2024-10-03

METHOD FOR RECOVERING IRON AND VALUABLE METALS FROM ELECTRIC ARC FURNACE DUST

#12
20240309475
2024-09-19

A METHOD FOR PROCESSING IRON ORE TO OBTAIN STEEL

#13
20240191314
2024-06-13

METHOD OF OPERATING AN ELECTRIC ARC FURNACE AND STEEL MILL

#14
20240167172
2024-05-23

Reactors and Methods to Reduce Carbon Footprint of Electric Arc Furnaces While Producing Sustainable Chemicals

#15
20240085110
2024-03-14

METHOD OF PRODUCING MOLTEN IRON USING ELECTRIC FURNACE INCLUDING VIDEO DEVICE

#16
20230416865
2023-12-28

WIRE ROD FOR 5000 MPA-GRADE DIAMOND WIRE AND PRODUCTION METHOD THEREFOR

#17
20230407423
2023-12-21

BIOMASS DIRECT REDUCED IRON

#18
20230287528
2023-09-14

Hot Metal Production from DRI with Electric Arc Heating

#19
20230203606
2023-06-29

Biomass Direct Reduced Iron

#20
20230175087
2023-06-08

Method for producing liquid pig iron from a DRI product

#21
20230131754
2023-04-27

Biomass Direct Reduced Iron

#22
20230018468
2023-01-19

Plant for melting and/or heating metal material and method to power it

#23
20230012944
2023-01-19

Hot-Work Die Steel Electroslag Remelted Ingot and Manufacturing Method Thereof

#24
20230002853
2023-01-05

Production of Iron

#25
20230002852
2023-01-05

Production of iron

#26
20230002841
2023-01-05

Method and device for producing direct reduced, carburized metal

#27
20220397476
2022-12-15

Process for detecting water leaks from smelting furnaces in metal or alloy production plants and related plant

#28
20220235426
2022-07-28

METHOD AND SYSTEM FOR PRODUCING STEEL OR MOLTEN-IRON-CONTAINING MATERIALS WITH REDUCED EMISSIONS

#29
20220119914
2022-04-21

Method and device for producing direct reduced metal

#30
20220074006
2022-03-10

Process and apparatus for direct reduction with electrically heated-up reduction gas

#31
20220064744
2022-03-03

Method and device for producing direct reduced metal

#32
20220010405
2022-01-13

Method and device for producing direct reduced metal

#33
20210333048
2021-10-28

Vessel for containing direct reduced iron

#34
20210301359
2021-09-30

Integration of DR plant and electric DRI melting furnace for producing high performance iron

#35
20210214812
2021-07-15

Method and apparatus for the production of cast iron, cast iron produced according to said method

#36
20210176835
2021-06-10

Spray cooling furnace electrodes with a cooling liquid that contains surfactants

#37
20200207665
2020-07-02

Refractory batch, a method for producing an unshaped refractory ceramic product from the batch and an unshaped refractory ceramic product obtained by the method

#38
20200165692
2020-05-28

METHOD FOR OPERATING MELTING/REFINING FURNACE AND MELTING-REFINING FURNACE

#39
20190284652
2019-09-19

Melting and refining furnace for cold iron source and method of operating melting and refining furnace

#40
20190241990
2019-08-08

Production of iron

#41
20190085420
2019-03-21

Direct reduced iron (DRI) heat treatment, products formed therefrom, and use thereof

#42
20190039909
2019-02-07

Method for manufacturing artificial graphite electrode

#43
20180347908
2018-12-06

Equipment for measurement and control of load material fed into a furnace

#44
20180274047
2018-09-27

Method and apparatus for the production of cast iron, cast iron produced according to said method

#45
20180209012
2018-07-26

Reduced iron manufacturing method

#46
20170130284
2017-05-11

Products and processes for producing steel alloys using an electric arc furnace

#47
20170073781
2017-03-16

Production method of granular metallic iron

#48
20160237535
2016-08-18

High toughness secondary hardening steels with nickel as a primary strength and toughening agent

#49
20160160303
2016-06-09

Exhaust gas treatment method and exhaust gas treatment facility

#50
20160061529
2016-03-03

Equipment for measurement and control of load material or scrap feeding into a furnace and relative method

#51
20150344983
2015-12-03

Fixed-type electric furnace and molten steel production method

#52
20150329929
2015-11-19

An Efficient Process in the Production of Iron and Steel from Iron Ore

#53
20150292801
2015-10-15

Burner and/or injector panel apparatus, methods of installation and use of the same in a metal-melting furnace, and metal-melting furnace including the same

#54
20150275323
2015-10-01

PRODUCTION OF PIG IRON

#55
20140318314
2014-10-30

Method for melting steel

#56
20140033869
2014-02-06

Method for the commercial production of iron

#57
20120224601
2012-09-06

BURNER AND/OR INJECTOR PANEL APPARATUS, METHODS OF INSTALLATION AND USE OF THE SAME IN A METAL-MELTING FURNACE, AND METAL-MELTING FURNACE INCLUDING THE SAME

#58
20120200013
2012-08-09

Apparatus for manufacturing molten metal

#59
20120193842
2012-08-02

Apparatus for manufacturing molten metal

#60
20120036960
2012-02-16

Direct processing of metallic ore concentrates into ferroalloys

#61
20120013053
2012-01-19

Apparatus for direct smelting of zinc bearing compounds to produce metallic zinc

#62
20110036201
2011-02-17

Method for manufacturing molten metal

#63
20100288078
2010-11-18

Process for producing stainless steel using direct reduction furnaces for ferrochrome and ferronickel on the primary side of a converter

#64
20100126312
2010-05-27

Direct smelting of zinc bearing compounds to produce metallic zinc

#65
20100126311
2010-05-27

DIRECT PROCESSING OF METALLIC ORE CONCENTRATES INTO FERROALLOYS

#66
20100126310
2010-05-27

Direct processing of ferrotitania ores and sands

#67
20090260483
2009-10-22

Method for the commercial production of iron

#68
20090039572
2009-02-12

Microwave iron-making furnace

#69
20080267250
2008-10-30

Equipment for measurement and control of load material or scrap feeding into a furnace and relative method

#70
20080145685
2008-06-19

Lump Object and Method of Producing the Same

#71
20080144692
2008-06-19

Electric Arc Furnace

#72
20070283785
2007-12-13

Process for recovery of iron from copper slag

#73
20070157761
2007-07-12

Use of an induction furnace for the production of iron from ore

#74
20070138714
2007-06-21

Device for melting down metal-containing material

#75
20060065071
2006-03-30

Method for utilizing slag

#76
20050092130
2005-05-05

Process and apparatus for the direct reduction of iron oxides in an electrothermal fluidized bed and resultant product