C21C7/0645 - CPC Classification Index

#1

20260015682

2026-01-15

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

#2

20250243554

2025-07-31

METHOD FOR PRODUCING GRAINED IRON, AND GRAINED IRON

#3

20250092480

2025-03-20

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

#4

20240376561

2024-11-14

PRECIPITATION HARDENING MARTENSITIC STAINLESS STEEL HAVING EXCELLENT WELDABILITY, AND METHOD FOR PRODUCING THE SAME

#5

20240247330

2024-07-25

PROCESS FOR MANUFACTURING A SLAG CONDITIONING AGENT FOR STEEL DESULFURIZATION

#6

20240247328

2024-07-25

Converter bottom blowing system capable of allowing multiple media to share bottom blowing lances and method for using same

#7

20240141462

2024-05-02

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

#8

20230357075

2023-11-09

FLUORITE SYNTHETIC STONES AND METHOD OF MAKING FLUORITE SYNTHETIC STONES

#9

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

#10

20220282346

2022-09-08

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

#11

20210395846

2021-12-23

Process for manufacturing a slag conditioning agent for steel desulfurization

#12

20210214813

2021-07-15

Slag discharging method in process of producing ultra-low phosphorus steel and method for producing ultra-low phosphorus steel

#13

20210071274

2021-03-11

Method for removing phosphorus from phosphorus-containing substance

#14

20210024421

2021-01-28

METHOD FOR REFINING METAL MELTS OR SLAGS

#15

20200385830

2020-12-10

Method for dephosphorization of hot metal, and refining agent

#16

20190309381

2019-10-10

Dephosphorizing flux and method for preparing same

#17

20190048431

2019-02-14

Method for refining molten steel in vacuum degassing equipment

#18

20190048430

2019-02-14

Clean and rapid smelting method in an electric arc furnace with full scrap steel

#19

20180222764

2018-08-09

Method for obtaining calcium aluminates from non-saline aluminum slags

#20

20180100208

2018-04-12

Grain refinement in iron-based materials

#21

20170349959

2017-12-07

Process for dephosphorization of molten metal during a refining process

#22

20170247773

2017-08-31

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

#23

20170218469

2017-08-03

Method for desulfurizing

#24

20170009311

2017-01-12

SECONDARY MATERIAL FOR STEEL REFINING

#25

20160222479

2016-08-04

DESULFURIZATION COMPOSITION

#26

20160186277

2016-06-30

Molten iron refining method and device thereof

#27

20150267270

2015-09-24

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

#28

20150033911

2015-02-05

Agent for treating molten metals, method for the production and use thereof

#29

20150027656

2015-01-29

Method for preparing low-cost clean steel

#30

20150000794

2015-01-01

Non-oriented silicon steel and its manufacturing method

#31

20140311295

2014-10-23

Converter steelmaking method

#32

20140261906

2014-09-18

Bearing steel and method for producing same

#33

20140224069

2014-08-14

Method for the production and the purification of molten calcium aluminate using contaminated aluminum dross residue

#34

20140096648

2014-04-10

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

#35

20140096643

2014-04-10

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

#36

20130333518

2013-12-19

Environmentally friendly flux for molten steel desulfurization

#37

20130142688

2013-06-06

High-strength steel sheet exhibiting excellent stretch-flange formability and bending workability, and method of producing molten steel for the high-strength steel sheet

#38

20130056167

2013-03-07

Method for controlling extremely low Ti in extra low carbon AlSi-killed steel

#39

20120180601

2012-07-19

Method of desulfurizing steel

#40

20110265608

2011-11-03

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

#41

20110167960

2011-07-14

Flux for refining steel of low nitrogen, low oxygen and low sulfur

#42

20110067526

2011-03-24

Desulfurizing agent and method for manufacturing the same

#43

20110000340

2011-01-06

METHOD FOR REMOVING COPPER IN STEEL SCRAPS

#44

20100307709

2010-12-09

REFINEMENT OF STEEL

#45

20100162853

2010-07-01

Desulfurization puck

#46

20090246068

2009-10-01

Refinement of steel

#47

20090013827

2009-01-15

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

#48

20080302210

2008-12-11

STEEL DESULPHURATING AGENT AND USE THEREOF IN THE DESULPHURATION OF STEEL

#49

20080196548

2008-08-21

Desulfurization puck

#50

20070221012

2007-09-27

Scrap bale for steel making process

#51

20070144306

2007-06-28

Steel desulphurating agent and use thereof in the desulphuration of steel

#52

20060096416

2006-05-11

Refining agent and refining method

#53

20060021467

2006-02-02

Reclaimed magnesium desulfurization agent

#54

20050257644

2005-11-24

Refining agent and refining method

#55

20050229745

2005-10-20

Metallurgical slag

#56

20050092133

2005-05-05

Method for manufacturing hot metal desulfurizing agent and apparatus for same

#57

20050066772

2005-03-31

Desulphurization of ferrous materials using glass cullet

#58

20050056120

2005-03-17

Desulphurization of ferrous materials using sodium silicate

#59

14200688

2016-04-26

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

#60

14200598

2016-06-14

Conversion of troublesome lime fines to useful high quality fluidized lime in feeding flux lime to a BOF converter