ClassID:

118890

C21C7/068 - CPC Classification

Classification description:

Treating molten ferrous alloys, e.g. steel, not covered by groups  - ; Removing impurities by adding a treating agent Decarburising

Sub-classes:
Recent Application in this class:
#1
20260146308
2026-05-28

NI-CR-FE-MO ALLOYS WITH EXCELLENT SURFACE PROPERTIES AND THEIR PRODUCTION METHODS

#2
20260131376
2026-05-14

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

#3
20260125781
2026-05-07

FE-CR-NI ALLOYS WITH EXCELLENT SURFACE PROPERTIES AND THEIR PRODUCTION METHODS

#4
20260117332
2026-04-30

METHOD OF SMELTING STEEL AND METHOD OF PRODUCING STEEL

#5
20260054312
2026-02-26

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

#6
20260048434
2026-02-19

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

#7
20260034581
2026-02-05

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

#8
20260001124
2026-01-01

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

#9
20250388987
2025-12-25

Methods for Improved Carbon Endpoint Determination

#10
20250353076
2025-11-20

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

#11
20250320572
2025-10-16

CONTROL DEVICE FOR VACUUM DEGASSING LINE, CONTROL METHOD FOR VACUUM DEGASSING LINE, OPERATION METHOD, AND METHOD OF PRODUCING MOLTEN STEEL

#12
20250320571
2025-10-16

STATE ESTIMATION METHOD FOR VACUUM DEGASSING TREATMENT, OPERATION METHOD, MOLTEN STEEL PRODUCTION METHOD, AND STATE ESTIMATION DEVICE FOR VACUUM DEGASSING TREATMENT

#13
20250188555
2025-06-12

DEGASSING METHOD FOR MANUFACTURING STEEL

#14
20250154617
2025-05-15

STEEL PLATE FOR ADVANCED NUCLEAR POWER UNIT REACTOR CORE SHELL CYLINDER AND MANUFACTURING METHOD FOR STEEL PLATE

#15
20250092480
2025-03-20

HOT-ROLLED, LOW-TEMPERATURE-RESISTANT, H-SHAPED STEEL WITH GRADE OF YIELD STRENGTH OF 420 MPA AND PREPARATION METHOD THEREFOR

#16
20250083980
2025-03-13

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

#17
20250083232
2025-03-13

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

#18
20250083231
2025-03-13

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

#19
20250083230
2025-03-13

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

#20
20250083224
2025-03-13

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

#21
20250083223
2025-03-13

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

#22
20250043372
2025-02-06

DEGASSING METHOD FOR MANUFACTURING ULTRA-LOW CARBON, NITROGEN, SULFUR STEEL

#23
20240392400
2024-11-28

METHOD FOR REFINING MOLTEN IRON

#24
20240327938
2024-10-03

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

#25
20240287635
2024-08-29

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

#26
20240287632
2024-08-29

TREATMENT METHOD OF MOLTEN STEEL AND STEEL PRODUCTION METHOD

#27
20240271233
2024-08-15

METHOD FOR REFINING MOLTEN IRON

#28
20240246145
2024-07-25

Gas atomization of molten steel

#29
20240165704
2024-05-23

Gas atomization of molten steel

#30
20240076755
2024-03-07

TOP-BLOWING LANCE FOR CONVERTER, METHOD FOR ADDING AUXILIARY RAW MATERIAL, AND METHOD FOR REFINING OF MOLTEN IRON

#31
20240076754
2024-03-07

MOLTEN IRON REFINING METHOD

#32
20240068061
2024-02-29

CONVERTER STEELMAKING METHOD

#33
20230359519
2023-11-09

Cross-Correlation Of Metrics For Anomaly Root Cause Identification

#34
20230323492
2023-10-12

Degassing method for manufacturing steel

#35
20230304110
2023-09-28

METHOD FOR PRODUCING CHROMIUM-CONTAINING MOLTEN STEEL

#36
20230287550
2023-09-14

FE-NI-CR ALLOY HAVING SUPERIOR CORROSION RESISTANCE, WELDABILITY, AND OXIDATION RESISTANCE

#37
20230167518
2023-06-01

METHOD FOR PRODUCING LOW-CARBON FERROMANGANESE

#38
20230142051
2023-05-11

DECARBURIZATION REFINING METHOD FOR MOLTEN STEEL UNDER REDUCED PRESSURE

#39
20230121123
2023-04-20

Method of making steel by deeply dephosphorization in hot metal tank and decarburization using semi-steel with nearly zero phosphorus load in converter

#40
20230093078
2023-03-23

Degassing method for manufacturing ultra-low carbon, nitrogen, sulfur steel

#41
20230083264
2023-03-16

DECARBURIZATION END POINT DETERMINATION METHOD, DECARBURIZATION END POINT DETERMINATION DEVICE, SECONDARY REFINING OPERATION METHOD FOR STEEL MAKING, AND METHOD FOR PRODUCING MOLTEN STEEL

#42
20220396844
2022-12-15

Molten steel production method

#43
20220340996
2022-10-27

WIRE ROD FOR ULTRAHIGH-STRENGTH STEEL CORD AND MANUFACTURING METHOD THEREOF

#44
20220325392
2022-10-13

Cross-correlation of metrics for anomaly root cause identification

#45
20200385829
2020-12-10

Process for injecting particulate material into a liquid metal bath

#46
20200347488
2020-11-05

Fe—Cr—Ni alloy and method for production thereof

#47
20190062854
2019-02-28

Manufacture of low carbon steel

#48
20190048431
2019-02-14

Method for refining molten steel in vacuum degassing equipment

#49
20190017138
2019-01-17

Non-oriented electrical steel sheet and production method thereof

#50
20180363077
2018-12-20

Production method for smelting clean steel from full-scrap steel using duplex electric arc furnaces

#51
20180272397
2018-09-27

HIGH STRENGTH STAINLESS STEEL SHEET EXCELLENT IN FATIGUE CHARACTERISTICS, AND PRODUCTION METHOD THEREFOR

#52
20180100208
2018-04-12

Grain refinement in iron-based materials

#53
20170051369
2017-02-23

Method for recycling-processing of dust generated in converter furnace, and method for manufacturing steel

#54
20170029919
2017-02-02

A STEEL REBAR AND A PRODUCTION METHOD THEREOF

#55
20160076123
2016-03-17

Steel sheet

#56
20150240323
2015-08-27

Straight barrel type vacuum refining device and method for use the same

#57
20150211082
2015-07-30

Alloy refining methods

#58
20150115509
2015-04-30

CONTACTLESS POSITION MEASUREMENT OF A MOVABLE LANCE IN CONVERTER STEEL PRODUCTION

#59
20150034212
2015-02-05

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

#60
20150020648
2015-01-22

Method for refining hot metal in converter

#61
20150013844
2015-01-15

Non-oriented silicon steel and manufacturing process thereof

#62
20140311295
2014-10-23

Converter steelmaking method

#63
20140260804
2014-09-18

Alloy refining methods

#64
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

#65
20120177935
2012-07-12

Process for Producing an Ultra-Low-Carbon Steel Slab, Strip or Sheet

#66
20120145353
2012-06-14

Method for producing alloy ingot

#67
20110265608
2011-11-03

Process for production of ultra low phosphorous and carbon ferromanganese by using of ferromanganese slag

#68
20110000339
2011-01-06

Method of producing steel with high manganese and low carbon content

#69
20100319816
2010-12-23

Thin gauge steel sheet excellent in surface conditions, formability, and workability and method for producing the same

#70
20100276102
2010-11-04

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

#71
20100071508
2010-03-25

Method of regulating the output of carbon monoxide in a metallurgical melting process

#72
20100024596
2010-02-04

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

#73
20090288799
2009-11-26

Method of Production of Ultralow Carbon Cast Slab

#74
20090114062
2009-05-07

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

#75
20090013827
2009-01-15

Conditioned Quicklime for Injection to a Molten Bath of a Steel-Making Vessel

#76
20080149298
2008-06-26

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

#77
20070079910
2007-04-12

Thin gauge steel sheet excellent in surface conditions, formability, and workability and method for producing the same

#78
20050160876
2005-07-28

Method for producing low carbon steel