ClassID:

118888

C21C7/064 - CPC Classification

Classification description:

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

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
20260054312
2026-02-26

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

#5
20260048434
2026-02-19

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

#6
20260034581
2026-02-05

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

#7
20260028690
2026-01-29

STEEL BOARD FOR POLAR MARINE ENGINEERING AND PREPARATION METHOD THEREFOR

#8
20260001124
2026-01-01

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

#9
20250388985
2025-12-25

A method for manufacturing pig iron in an electrical smelting furnace and associated electrical smelting furnace

#10
20250353076
2025-11-20

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

#11
20250257418
2025-08-14

FATIGUE-RESISTANT LOAD-BEARING STEEL FOR WIND TURBINE MAIN SHAFT, AND MANUFACTURING METHOD AND USE THEREOF

#12
20250188555
2025-06-12

DEGASSING METHOD FOR MANUFACTURING STEEL

#13
20250154617
2025-05-15

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

#14
20250083980
2025-03-13

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

#15
20250083232
2025-03-13

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

#16
20250083231
2025-03-13

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

#17
20250083230
2025-03-13

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

#18
20250083224
2025-03-13

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

#19
20250083223
2025-03-13

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

#20
20250043372
2025-02-06

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

#21
20240401161
2024-12-05

Method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma

#22
20240327938
2024-10-03

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

#23
20240309475
2024-09-19

A METHOD FOR PROCESSING IRON ORE TO OBTAIN STEEL

#24
20240287635
2024-08-29

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

#25
20240246145
2024-07-25

Gas atomization of molten steel

#26
20240229177
2024-07-11

METHOD FOR DEPHOSPHORIZATION OF MOLTEN IRON

#27
20240076756
2024-03-07

METHOD FOR DESULFURIZING MOLTEN METAL

#28
20240076754
2024-03-07

MOLTEN IRON REFINING METHOD

#29
20240068064
2024-02-29

400 MPa CORROSION-RESISTANT STEEL BAR AND PRODUCTION METHOD THEREOF

#30
20230359519
2023-11-09

Cross-Correlation Of Metrics For Anomaly Root Cause Identification

#31
20230323492
2023-10-12

Degassing method for manufacturing steel

#32
20230313330
2023-10-05

METHOD FOR MANUFACTURING LOW-PHOSPHORUS MOLTEN STEEL

#33
20230304118
2023-09-28

Method for Preparing Stainless Steel Seamless Tube with Ultra-High Cleanliness for Integrated Circuit and IC Industry Preparation Device, and Stainless Steel Seamless Tube

#34
20230175093
2023-06-08

PROCESS FOR SMELTING STEEL FOR ULTRAFINE CARBORUNDUM WIRE

#35
20230098225
2023-03-30

STEEL BOARD FOR POLAR MARINE ENGINEERING AND PREPARATION METHOD THEREFOR

#36
20230093078
2023-03-23

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

#37
20220411907
2022-12-29

690 MPA-GRADE MEDIUM MANGANESE STEEL MEDIUM THICK STEEL WITH HIGH STRENGTH AND LOW YIELD RATIO AND MANUFACTURING METHOD THEREFOR

#38
20220340996
2022-10-27

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

#39
20220325392
2022-10-13

Cross-correlation of metrics for anomaly root cause identification

#40
20200347488
2020-11-05

Fe—Cr—Ni alloy and method for production thereof

#41
20200056271
2020-02-20

Non-heat treated steel bar

#42
20190309381
2019-10-10

Dephosphorizing flux and method for preparing same

#43
20190309380
2019-10-10

MOLTEN STEEL TREATMENT DEVICE AND MOLTEN STEEL TREATMENT METHOD USING SAME

#44
20190062854
2019-02-28

Manufacture of low carbon steel

#45
20190048431
2019-02-14

Method for refining molten steel in vacuum degassing equipment

#46
20190017138
2019-01-17

Non-oriented electrical steel sheet and production method thereof

#47
20180363077
2018-12-20

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

#48
20180002789
2018-01-04

Non-oriented electrical steel sheet and method for producing the same

#49
20170362672
2017-12-21

Multiple chamber material-stirring lance and method

#50
20170349959
2017-12-07

Process for dephosphorization of molten metal during a refining process

#51
20170247773
2017-08-31

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

#52
20170218469
2017-08-03

Method for desulfurizing

#53
20170029919
2017-02-02

A STEEL REBAR AND A PRODUCTION METHOD THEREOF

#54
20160369361
2016-12-22

Coaxial material-stirring lance and method of use

#55
20160222479
2016-08-04

DESULFURIZATION COMPOSITION

#56
20160186277
2016-06-30

Molten iron refining method and device thereof

#57
20160168655
2016-06-16

Method for manufacturing duplex stainless steel sheet having reduced inclusions

#58
20150267270
2015-09-24

Impeller and method of melt-pool processing method using the same

#59
20150240323
2015-08-27

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

#60
20150204071
2015-07-23

H-Section steel

#61
20150203943
2015-07-23

Steel for induction hardening with excellent fatigue properties

#62
20150191808
2015-07-09

Case hardening steel with excellent fatigue properties

#63
20150027656
2015-01-29

Method for preparing low-cost clean steel

#64
20150020648
2015-01-22

Method for refining hot metal in converter

#65
20140352494
2014-12-04

Methods and systems for producing ferro-chrome in a duplex furnace

#66
20140096648
2014-04-10

Method for controlling A-shaped segregation by purification of liquid steel

#67
20140096643
2014-04-10

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

#68
20140083251
2014-03-27

Method for desulfurizing hot metal

#69
20140069235
2014-03-13

Method of refining molten iron

#70
20130333518
2013-12-19

Environmentally friendly flux for molten steel desulfurization

#71
20130152740
2013-06-20

METALLURGICAL METHOD FOR REFINING GRAINS OF STEEL BY MODIFYING INCLUSIONS THROUGH ADDITION OF MAGNESIUM AND ALUMINUM

#72
20120260773
2012-10-18

Operation method for mechanically stirring chrome-containing molten iron

#73
20120145353
2012-06-14

Method for producing alloy ingot

#74
20120055288
2012-03-08

Method of Making a High Strength, High Toughness, Fatigue Resistant, Precipitation Hardenable Stainless Steel and Product Made Therefrom

#75
20110229363
2011-09-22

Steel for machine and structural use having excellent machinability

#76
20110209581
2011-09-01

Method of producing steel for steel pipe excellent in sour-resistance performance

#77
20110167963
2011-07-14

Dual outlet injection system

#78
20110155821
2011-06-30

PEARLITE RAIL HAVING SUPERIOR ABRASION RESISTANCE AND EXCELLENT TOUGHNESS

#79
20100319816
2010-12-23

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

#80
20100276102
2010-11-04

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

#81
20100071509
2010-03-25

Method of producing steel for steel pipe excellent in sour-resistance performance

#82
20100024596
2010-02-04

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

#83
20090293671
2009-12-03

Electric arc furnace steelmaking

#84
20090283182
2009-11-19

Method of Making a High Strength, High Toughness, Fatigue Resistant, Precipitation Hardenable Stainless Steel and Product Made Therefrom

#85
20090038439
2009-02-12

PROCESS FOR PRODUCING STEEL FOR HIGH-CARBON STEEL WIRE MATERIAL WITH EXCELLENT DRAWABILITY AND FATIQUE CHARACTERISTICS

#86
20080302210
2008-12-11

STEEL DESULPHURATING AGENT AND USE THEREOF IN THE DESULPHURATION OF STEEL

#87
20070144306
2007-06-28

Steel desulphurating agent and use thereof in the desulphuration of steel

#88
20070079910
2007-04-12

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

#89
20060272452
2006-12-07

Production of iron

#90
20060123949
2006-06-15

Highly ductile steel sheet and method of manufacturing the same

#91
20060021467
2006-02-02

Reclaimed magnesium desulfurization agent

#92
20050223850
2005-10-13

Model-based system for determining process parameters for the ladle refinement of steel

#93
20050092133
2005-05-05

Method for manufacturing hot metal desulfurizing agent and apparatus for same

#94
14200688
2016-04-26

Preparation of flux lime for a BOF converter including conversion of troublesome fines to high quality fluidized lime