ClassID:

118871

C21C7/0006 - CPC Classification

Classification description:

Treating molten ferrous alloys, e.g. steel, not covered by groups  -  Adding metallic additives

Sub-classes:
Recent Application in this class:
#1
20260131376
2026-05-14

LOW-SULFUR GRANULATED METALLIC UNITS, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

#2
20260054312
2026-02-26

TREATING COOLING WATER IN IRON PRODUCTION FACILITIES, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

#3
20260048434
2026-02-19

LOW-CARBON GRANULATED METALLIC UNITS, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

#4
20260034581
2026-02-05

USE OF RESIDUAL IRON WITHIN GRANULATED METALLIC UNIT PRODUCTION FACILITIES, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

#5
20260028690
2026-01-29

STEEL BOARD FOR POLAR MARINE ENGINEERING AND PREPARATION METHOD THEREFOR

#6
20260001124
2026-01-01

CONTINUOUS GRANULATED METALLIC UNITS PRODUCTION, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

#7
20250369062
2025-12-04

METHOD FOR REDUCING CONTENT OF MNS INCLUSIONS IN STEEL

#8
20250353076
2025-11-20

USE OF A BASIC OXYGEN FURNACE TO PRODUCE GRANULATED METALLIC UNITS, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

#9
20250346970
2025-11-13

METHODS FOR PROCESSING ENTRAINED SLAG INCLUSIONS IN STEEL WITH DEOXIDIZED CALCIUM WITH FIXED ALUMINUM

#10
20250179598
2025-06-05

METHOD FOR RECYCLING CHROMIUM OXIDE AND FORMING CHROMIUM-ALLOY STEEL

#11
20250083980
2025-03-13

TREATING COOLING WATER IN IRON PRODUCTION FACILITIES, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

#12
20250083232
2025-03-13

CONTINUOUS GRANULATED METALLIC UNITS PRODUCTION, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

#13
20250083231
2025-03-13

USE OF RESIDUAL IRON WITHIN GRANULATED METALLIC UNIT PRODUCTION FACILITIES, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

#14
20250083230
2025-03-13

USE OF A BASIC OXYGEN FURNACE TO PRODUCE GRANULATED METALLIC UNITS, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

#15
20250083224
2025-03-13

LOW-CARBON GRANULATED METALLIC UNITS, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

#16
20250083223
2025-03-13

LOW-SULFUR GRANULATED METALLIC UNITS, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

#17
20250043371
2025-02-06

COMPOSITE ADDITIVE FOR FORMING INCLUSIONS WITH CORE-SHELL STRUCTURE, PREPARATION METHOD AND SMELTING METHOD

#18
20240360527
2024-10-31

ALUMINUM ALLOY DEOXIDIZER WITH CARBON COMPOUNDS

#19
20240327938
2024-10-03

METHOD FOR IF-INTERSTITIAL FREE STEEL PRODUCTION USING SCRAP IN ARC FURNACE FACILITIES

#20
20240287635
2024-08-29

METHOD FOR PREPARING TITANIUM-CONTAINING ULTRA-LOW-CARBON STEEL

#21
20240287632
2024-08-29

TREATMENT METHOD OF MOLTEN STEEL AND STEEL PRODUCTION METHOD

#22
20240271235
2024-08-15

MOLTEN STEEL DENITRIFICATION METHOD AND STEEL PRODUCTION METHOD

#23
20240271234
2024-08-15

METHOD FOR SECONDARILY REFINING MOLTEN STEEL AND METHOD OF PRODUCING STEEL

#24
20240165704
2024-05-23

Gas atomization of molten steel

#25
20240150860
2024-05-09

PROCESS FOR SMELTING HIGH-SPEED STEEL BY USING INTERMEDIATE FREQUENCY FURNACE-LF FURNACE-VD

#26
20240141462
2024-05-02

Method for smelting low-phosphorus high-manganese steel based on reduction dephosphorization of ferromanganese

#27
20240068064
2024-02-29

400 MPa CORROSION-RESISTANT STEEL BAR AND PRODUCTION METHOD THEREOF

#28
20240011121
2024-01-11

PRODUCTION METHOD FOR NON-ORIENTED SILICON STEEL AND NON-ORIENTED SILICON STEEL

#29
20240002976
2024-01-04

METHOD FOR MELTING FERROUS METALS, NON-FERROUS METALS, MACHINING WASTE AND SCRAP AND STEEL

#30
20230366058
2023-11-16

NON-ORIENTED ELECTRICAL STEEL SHEET, METHOD FOR PRODUCING SAME, AND HOT-ROLLED STEEL SHEET

#31
20230339006
2023-10-26

High performance alloy for corrosion resistance

#32
20230325637
2023-10-12

METHOD FOR DETERMINING QUANTITY OF CALCIUM LINE FED INTO MOLTEN STEEL BASED ON MINIMUM GIBBS FREE ENERGY PRINCIPLE

#33
20230295780
2023-09-21

Ultra-clean rare earth steel and occluded foreign substance modification control method

#34
20230220504
2023-07-13

ULTRA-HIGH PHOSPHORUS MOLTEN IRON LOW-COST SMELTING METHOD FOR POLAR STEEL

#35
20230098225
2023-03-30

STEEL BOARD FOR POLAR MARINE ENGINEERING AND PREPARATION METHOD THEREFOR

#36
20220389529
2022-12-08

DIRECT CURRENT ELECTRIC ARC FURNACE

#37
20220307097
2022-09-29

Rare-earth microalloyed steel and control method

#38
20220297172
2022-09-22

High performance alloy for corrosion resistance

#39
20220282346
2022-09-08

Cored wire for out-of-furnace treatment of metallurgical melts

#40
20220259707
2022-08-18

ULTRA-CLEAN RARE EARTH STEEL AND OCCLUDED FOREIGN SUBSTANCE MODIFICATION CONTROL METHOD

#41
20220195546
2022-06-23

Method for producing chromium-containing molten iron

#42
20220195545
2022-06-23

METHOD FOR PRODUCING CHROMIUM-CONTAINING MOLTEN IRON

#43
20220170124
2022-06-02

Method for recycling chromium oxide and forming chromium-alloy steel

#44
20210140020
2021-05-13

Silicon based alloy, method for the production thereof and use of such alloy

#45
20210123112
2021-04-29

Cored wire with particulate material

#46
20210054479
2021-02-25

METHOD FOR MANUFACTURING MANGANESE RAW MATERIAL AND METHOD FOR MANUFACTURING MANGANESE-CONTAINING MOLTEN STEEL

#47
20200377977
2020-12-03

METHOD FOR PRODUCING ALLOY STEEL

#48
20200340085
2020-10-29

MOLTEN MANGANESE-CONTAINING STEEL PRODUCTION METHOD, HOLDING FURNACE, AND MOLTEN MANGANESE-CONTAINING STEEL PRODUCTION EQUIPMENT USING HOLDING FURNACE

#49
20190144960
2019-05-16

Cored wire with particulate material

#50
20180237870
2018-08-23

Binding process for pyrophoric steelmaking byproducts

#51
20180187276
2018-07-05

Slag Conditioner

#52
20180100208
2018-04-12

Grain refinement in iron-based materials

#53
20170247773
2017-08-31

Molten steel desulfurization method, molten steel secondary refining method, and molten steel manufacturing method

#54
20170233840
2017-08-17

Solid agglomerate of fine metal particles comprising a liquid oily lubricant and method for making same

#55
20170226602
2017-08-10

METHOD FOR CONTROLLING Ti CONCENTRATION IN STEEL, AND METHOD FOR PRODUCING SILICON-DEOXIDIZED STEEL

#56
20170159140
2017-06-08

Production method for maraging steel and production method for maraging steel consumable electrode

#57
20170107589
2017-04-20

H-section steel and method of producing the same

#58
20170038145
2017-02-09

HIGH TEMPERATURE ALLOY PARTICLE DOSING DEVICE

#59
20170009310
2017-01-12

Method of adding high vapor pressure magnesium to steel liquid and apparatus for performing the method

#60
20160315330
2016-10-27

Method for recycling used or discarded portable electric batteries

#61
20160244859
2016-08-25

Solid agglomerate of fine metal particles comprising a liquid oily lubricant and method for making same

#62
20160151832
2016-06-02

Spring steel with excellent fatigue resistance and method of manufacturing the same

#63
20160138139
2016-05-19

SPHEROIDIZING TREATMENT METHOD FOR MOLTEN METAL OF SPHEROIDAL GRAPHITE CAST IRON

#64
20160115561
2016-04-28

Method and device for treating a metal or a molten metal alloy using an addition agent

#65
20160053350
2016-02-25

MOLTEN MANGANESE-CONTAINING STEEL PRODUCTION METHOD, HOLDING FURNACE, AND MOLTEN MANGANESE-CONTAINING STEEL PRODUCTION EQUIPMENT USING HOLDING FURNACE

#66
20160047008
2016-02-18

Inoculant with surface particles

#67
20150306662
2015-10-29

Spreading device for bulk material on a circular surface and method for operating the same

#68
20150267272
2015-09-24

CORED WIRE FOR THE METALLURGICAL TREATMENT OF A BATH OF MOLTEN METAL AND CORRESPONDING METHOD

#69
20150034212
2015-02-05

Non-oriented electrical steel sheet with fine magnetic performance, and calcium treatment method therefor

#70
20150000794
2015-01-01

Non-oriented silicon steel and its manufacturing method

#71
20140318672
2014-10-30

High strength hot rolled steel sheet for line pipe use excellent in low temperature toughness and ductile fracture arrest performance and method of production of same

#72
20140311292
2014-10-23

Synthetic slag briquettes for use in steelmaking

#73
20140271330
2014-09-18

Method for producing spheroidal graphite cast iron and vehicle component using said spheroidal graphite cast iron

#74
20140096643
2014-04-10

Molten steel desulfurization method, molten steel secondary refining method, and molten steel manufacturing method

#75
20130305880
2013-11-21

Grain refiners for steel-manufacturing methods and use

#76
20130213184
2013-08-22

Process for making low and specified hardenability structural steel

#77
20130121870
2013-05-16

FERRITIC STAINLESS STEEL, WITH HIGH AND STABLE GRAIN REFINING POTENCY, AND ITS PRODUCTION METHOD

#78
20120301346
2012-11-29

CGI CAST IRON AND PRODUCTION METHOD FOR THE SAME

#79
20120298320
2012-11-29

Low-carbon steel slab producing method

#80
20120261085
2012-10-18

EXTREMELY LOW CARBON STEEL PLATE EXCELLENT IN SURFACE CHARACTERISTICS, WORKABILITY, AND FORMABILITY AND A METHOD OF PRODUCING EXTREMELY LOW CARBON CAST SLAB

#81
20120251380
2012-10-04

Recycling of tungsten carbides

#82
20120145286
2012-06-14

Hadfield steel

#83
20120121455
2012-05-17

Low lead ingot

#84
20110247458
2011-10-13

Method for influencing the properties of cast iron

#85
20110236696
2011-09-29

HIGH STRENGTH REBAR

#86
20110186184
2011-08-04

Ferritic stainless steel casting and sheet and method for producing the same

#87
20110174457
2011-07-21

PROCESS FOR OPTIMIZING STEEL FABRICATION

#88
20110094699
2011-04-28

Cast slab of non-oriented electrical steel and manufacturing method thereof

#89
20110094336
2011-04-28

Method for producing a steel melt containing up to 30% manganese

#90
20110091347
2011-04-21

Steel product for welding

#91
20110079328
2011-04-07

HIGH STRENGTH HOT ROLLED STEEL SHEET FOR LINE PIPE USE EXCELLENT IN LOW TEMPERATURE TOUGHNESS AND DUCTILE FRACTURE ARREST PERFORMANCE AND METHOD OF PRODUCTION OF SAME

#92
20110076512
2011-03-31

High-strength steel sheet and method of producing molten steel for high-strength steel sheet

#93
20110056077
2011-03-10

Method of inoculating magnesium on compacted graphite iron, and cylinder block and cylinder head manufactured by using the method

#94
20110030911
2011-02-10

LOW-CARBON STEEL SLAB PRODUCING METHOD

#95
20110000339
2011-01-06

Method of producing steel with high manganese and low carbon content

#96
20100330387
2010-12-30

High strength thick steel material and high strength giant H-shape excellent in toughness and weldability and methods of production of same

#97
20100278684
2010-11-04

PROCESS FOR MANUFACTURING STAINLESS STEEL CONTAINING FINE CARBONITRIDES, AND PRODUCT OBTAINED FROM THIS PROCESS

#98
20100276102
2010-11-04

Low cost making of a low carbon, low sulfur, and low nitrogen steel using conventional steelmaking equipment

#99
20100098577
2010-04-22

Si-killed steel wire rod and spring excellent in fatigue properties

#100
20100031582
2010-02-11

Ferrous powder material and a manufacture method thereof, and a briquette for use as steelmaking material

#101
20100024596
2010-02-04

Low cost making of a low carbon, low sulfur, and low nitrogen steel using conventional steelmaking equipment

#102
20100018348
2010-01-28

Method for influencing the properties of cast iron, and oxygen sensor

#103
20090311553
2009-12-17

Strand cladding of calcium wire

#104
20090293674
2009-12-03

Wire for refining molten metal and associated method of manufacture

#105
20090288799
2009-11-26

Method of Production of Ultralow Carbon Cast Slab

#106
20090223603
2009-09-10

METHOD FOR MANUFACTURING FERRITIC STAINLESS STEEL SLABS WITH EQUIAXED GRAIN STRUCTURES AND THE FERRITIC STAINLESS STEEL MANUFACTURED BY IT

#107
20090211400
2009-08-27

Grain refiners for steel-manufacturing methods and use

#108
20090114062
2009-05-07

Method of and smelter for producing steel with high manganese and low carbon content

#109
20090098007
2009-04-16

Duplex stainless steel

#110
20090019968
2009-01-22

Removal method of nitrogen in molten steel

#111
20080314201
2008-12-25

Enhanced Alloy Recovery In Molten Steel Baths Utilizing Cored Wires Doped With Dispersants

#112
20080314199
2008-12-25

Enhanced Alloy Recovery In Molten Steel Baths Utilizing Cored Wires Doped With Deoxidants

#113
20080236334
2008-10-02

Melting metallurgical process for producing metal melts and transition metal-containing additive for use in this method

#114
20080202289
2008-08-28

Method for producing high cleanness steel excellent in fatigue strength or cold workability

#115
20080156400
2008-07-03

Low alloy steel

#116
20080149298
2008-06-26

Low carbon steel sheet and low carbon steel slab and process for producing same

#117
20080142123
2008-06-19

Ferritic stainless steel casting and sheet and method for producing the same

#118
20080121072
2008-05-29

Alloying fine adjustment method

#119
20080066576
2008-03-20

Methods for Recovering Refractory Metal from Wheel Grinding

#120
20080006349
2008-01-10

Cast iron alloy containing boron

#121
20070292299
2007-12-20

Method to obtain a manganese steel alloy

#122
20070240539
2007-10-18

Article for Increasing Titanium Content of Steel

#123
20070108673
2007-05-17

Molten metal processing

#124
20070045884
2007-03-01

Procedure for the production of a fireproof ceramic product, use of the product and procedure for the change of a melt with the product

#125
20070039418
2007-02-22

Method for producing steel ingot

#126
20060292026
2006-12-28

Cast iron alloy containing boron

#127
20060260719
2006-11-23

Steels with few alumina clusters

#128
20060198756
2006-09-07

Method for adding a large quantity of manganese alloy during the production of steel through cored wires

#129
20060156864
2006-07-20

Method for producing high cleanliness steel excellent in fatigue strength or cold workability