C21C7/00 - CPC Classification Index

ClassID:

118870 ⎘

C21C7/00 - CPC Classification

Classification description:

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

Sub-classes:

C21C2007/0093 » {Duplex process; Two stage processes} 5
C21C7/0006 » {Adding metallic additives} 114
C21C7/0025 » {Adding carbon material} 50
C21C7/0037 » {by injecting powdered material} 46
C21C7/005 » {using exothermic reaction compositions} 3
C21C7/0056 » {using cored wires} 44
C21C7/0068 » {by introducing material into a current of streaming metal} 9
C21C7/0075 » {Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle} 69
C21C7/0081 » {Treating and handling under pressure} 0
C21C7/0087 » {Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal} 55
C21C7/04 » Removing impurities by adding a treating agent 46
C21C7/10 » Handling in a vacuum 115

Recent Application in this class:

20240327939

2024-10-03

SUSTAINABLE STEEL PRODUCTION WITH CO-GENERATION OF HYDROGEN

20230012857

2023-01-19

Operation method of ladle refining treatment

20220387918

2022-12-08

REFRACTORY FILTER

20220145413

2022-05-12

Method and system for predicting addition amount of slagging lime during LF refining, and LF refining method

20190300992

2019-10-03

Steel for induction hardening

20190292613

2019-09-26

Sulfur additive for molten steel and method for producing resulfurized steel

20190185961

2019-06-20

Ultrasonic Probes with Gas Outlets for Degassing of Molten Metals

20190153574

2019-05-23

Steel for induction hardening

20170226609

2017-08-10

METHOD FOR PRODUCTION OF A NITRIDED PACKAGING STEEL

#10

20170226602

2017-08-10

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

#11

20170198862

2017-07-13

Gas pressure tank structure

#12

20170159140

2017-06-08

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

#13

20170106436

2017-04-20

R, R, C method and equipment for casting amorphous, ultra-microcrystalline, microcrystalline and the like metal profiles

#14

20170067134

2017-03-09

Ultrasonic probes with gas outlets for degassing of molten metals

#15

20160298906

2016-10-13

Molten steel treatment apparatus and molten steel treatment method

#16

20160060726

2016-03-03

Green process for the preparation of pure iron

#17

20150259761

2015-09-17

Metal making lance with spring-loaded thermocouple or camera in lance tip

#18

20150240321

2015-08-27

Advanced technology for iron-chrome alloys production and related plant

#19

20150135901

2015-05-21

Ultrasonic probes with gas outlets for degassing of molten metals

#20

20150122083

2015-05-07

High cleanliness molten steel production method and refining device

#21

20150061200

2015-03-05

Apparatus for making liquid iron and steel

#22

20150040722

2015-02-12

Iron reduction process and equipment

#23

20140318314

2014-10-30

Method for melting steel

#24

20140291899

2014-10-02

Apparatus for inducing flow in a molten material

#25

20140265068

2014-09-18

SYSTEM AND METHOD FOR COMPONENT MAINTENANCE

#26

20140224069

2014-08-14

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

#27

20140165784

2014-06-19

RECYCLING OF TUNGSTEN CARBIDES

#28

20130287619

2013-10-31

Neutron shielding material, method of manufacturing the same, and cask for spent fuel

#29

20130269483

2013-10-17

Apparatus and method for electromagnetic stirring in an electrical arc furnace

#30

20130213184

2013-08-22

Process for making low and specified hardenability structural steel

#31

20120251380

2012-10-04

Recycling of tungsten carbides

#32

20120193062

2012-08-02

METALLURGICAL COMPLEX

#33

20120187315

2012-07-26

Neutron shielding material, method of manufacturing the same, and cask for spent fuel

#34

20110197713

2011-08-18

RECARBURISATION METHOD

#35

20100263485

2010-10-21

Powder for sulphur-based flux-cored wire, flux-cored wire and method for producing a flux-cored wire using it

#36

20090123645

2009-05-14

Refractory articles

#37

20070090047

2007-04-26

Refractory articles

#38

20060264315

2006-11-23

Refractory articles

#39

20050011309

2005-01-20

Agglomerated quicklime or dolomitic quicklime compositions for electric arc furnace steelmaking