C21D3/04 - CPC Classification Index

#1

20260124704

2026-05-07

GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD OF PRODUCTION OF SAME

#2

20260081056

2026-03-19

METHOD FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET, AND INDUCTION HEATING DEVICE

#3

20250340964

2025-11-06

FORMING METHOD FOR INSULATION COATING OF GRAIN ORIENTED ELECTRICAL STEEL SHEET

#4

20250320593

2025-10-16

AUSTENITIC FE-NI-CR ALLOY HAVING EXCELLENT OXIDATION RESISTANCE AND METHOD FOR PRODUCING SAME

#5

20250075286

2025-03-06

ULTRA-HIGH STRENGTH GALVANIZED STEEL SHEET WITH EXCELLENT WELDABILITY AND MANUFACTURING METHOD THEREFOR

#6

20250051895

2025-02-13

STEEL SHEET AND PLATED STEEL SHEET

#7

20250051867

2025-02-13

GRAIN ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME

#8

20250043407

2025-02-06

Zinc Coated Mn-containing advanced high strength steel and method of manufacturing the same

#9

20240344164

2024-10-17

ADVANCED HIGH STRENGTH ZINC PLATED STEEL SHEET HAVING EXCELLENT SURFACE QUALITY AND ELECTRICAL RESISTANCE SPOT WELDABILITY AND MANUFACTURING METHOD THEREOF

#10

20240287659

2024-08-29

METHOD OF PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND ROLLING MILL FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET

#11

20240254601

2024-08-01

METHOD FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET

#12

20240254600

2024-08-01

GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD OF PRODUCING SAME

#13

20240247347

2024-07-25

METHOD FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET

#14

20240247333

2024-07-25

METHOD OF DETERMINING FINAL ANNEALING CONDITIONS FOR GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD OF PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET USING METHOD OF DETERMINING THEREOF

#15

20240240293

2024-07-18

METHOD FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET

#16

20230402220

2023-12-14

WOUND CORE

#17

20230395300

2023-12-07

WOUND CORE

#18

20230257844

2023-08-17

Steel sheet

#19

20230250506

2023-08-10

METHOD OF MANUFACTURING GRAIN-ORIENTED ELECTRICAL STEEL SHEET

#20

20230243010

2023-08-03

PRODUCTION METHOD FOR GRAIN-ORIENTED ELECTRICAL STEEL SHEET

#21

20230160034

2023-05-25

Grain-oriented electrical steel sheet and method for manufacturing same and annealing separator

#22

20230115048

2023-04-13

STAINLESS STEEL WITH GOOD MIRROR POLISHABILITY AND METHOD FOR PRODUCING SAME

#23

20230042915

2023-02-09

ANNEALING SEPARATOR FOR ORIENTED ELECTRICAL STEEL SHEET, ORIENTED ELECTRICAL STEEL SHEET, AND MANUFACTURING METHOD OF ORIENTED ELECTRICAL STEEL SHEET

#24

20230032118

2023-02-02

GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME

#25

20230024115

2023-01-26

Advanced high strength zinc plated steel sheet having excellent surface quality and electrical resistance spot weldability

#26

20220364197

2022-11-17

PREPARATION METHOD OF GLASSLESS GRAIN-ORIENTED SILICON STEEL AND PRODUCT THEREOF

#27

20220344084

2022-10-27

Grain oriented electrical steel sheet

#28

20220307117

2022-09-29

ELECTRIC-RESISTANCE-WELDED STEEL PIPE OR TUBE FOR HOLLOW STABILIZER

#29

20220290277

2022-09-15

GRAIN-ORIENTED ELECTRIC STEEL SHEET AND MANUFACTURING METHOD THEREFOR

#30

20220243315

2022-08-04

GRAIN ORIENTED ELECTRICAL STEEL SHEET, FORMING METHOD FOR INSULATION COATING OF GRAIN ORIENTED ELECTRICAL STEEL SHEET, AND PRODUCING METHOD FOR GRAIN ORIENTED ELECTRICAL STEEL SHEET

#31

20220212289

2022-07-07

Grain-oriented electrical steel sheet and magnetic domain refinement method therefor

#32

20220186350

2022-06-16

SEAMLESS STEEL PIPE SUITABLE FOR USE IN SOUR ENVIRONMENT

#33

20220136076

2022-05-05

Steel decarburization using carbon dioxide

#34

20220119958

2022-04-21

GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD OF THE SAME

#35

20220119910

2022-04-21

Annealing separating agent composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet, and method for manufacturing grain oriented electrical steel sheet

#36

20220112573

2022-04-14

Method for producing grain oriented electrical steel sheet

#37

20220098691

2022-03-31

METHOD FOR MANUFACTURING GRAIN-ORIENTED ELECTRICAL STEEL SHEET

#38

20220098690

2022-03-31

Method for producing grain oriented electrical steel sheet

#39

20220098688

2022-03-31

Grain-oriented electrical steel sheet and method for manufacturing same and annealing separator

#40

20220090267

2022-03-24

GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME

#41

20220090246

2022-03-24

Method for producing grain oriented electrical steel sheet

#42

20220090242

2022-03-24

Grain oriented electrical steel sheet, forming method for insulation coating of grain oriented electrical steel sheet, and producing method for grain oriented electrical steel sheet

#43

20220090241

2022-03-24

Grain oriented electrical steel sheet, forming method for insulation coating of grain oriented electrical steel sheet, and producing method for grain oriented electrical steel sheet

#44

20220090227

2022-03-24

Grain-oriented electrical steel sheet and method for manufacturing the same

#45

20220090226

2022-03-24

METHOD FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET

#46

20220090225

2022-03-24

GRAIN-ORIENTED ELECTRICAL STEEL SHEET, INTERMEDIATE STEEL SHEET FOR GRAIN-ORIENTED ELECTRICAL STEEL SHEET, AND METHODS FOR MANUFACTURING SAME

#47

20220074016

2022-03-10

Grain-oriented electrical steel sheet and method for manufacturing same

#48

20220068526

2022-03-03

Grain-oriented electrical steel sheet and method of producing the same

#49

20220064753

2022-03-03

Grain-oriented electrical steel sheet, annealing separator, and method for manufacturing grain-oriented electrical steel sheet

#50

20220042136

2022-02-10

Grain-oriented electrical steel sheet and method for manufacturing same

#51

20210395851

2021-12-23

COATED GRAIN ORIENTED ELECTRICAL STEEL PLATES, AND METHODS OF PRODUCING THE SAME

#52

20210394299

2021-12-23

Joined structure and method for manufacturing joined structure

#53

20210388459

2021-12-16

METHOD FOR MANUFACTURING GRAIN-ORIENTED ELECTRICAL STEEL SHEET

#54

20210355557

2021-11-18

Grain oriented electrical steel sheet

#55

20210310096

2021-10-07

Method for manufacturing a grain-oriented electrical steel sheet

#56

20210265087

2021-08-26

Grain-oriented electrical steel sheet and manufacturing method therefor

#57

20210130922

2021-05-06

Method for refining magnetic domains of grain-oriented electrical steel sheet

#58

20200407833

2020-12-31

Zinc-plated steel sheet for hot stamping and production method therefor

#59

20200381150

2020-12-03

Grain-oriented electrical steel sheet

#60

20200354809

2020-11-12

Grain oriented electrical steel sheet

#61

20200182318

2020-06-11

Brake disk including decarburized layer and nitride compound layer, and method of manufacturing the same

#62

20200123632

2020-04-23

Grain-oriented electrical steel sheet

#63

20200123627

2020-04-23

Magnesium oxide for annealing separators, and grain-oriented magnetic steel sheet

#64

20200123017

2020-04-23

Magnesium oxide for annealing separators, and grain-oriented magnetic steel sheet

#65

20200087746

2020-03-19

Grain-oriented electrical steel sheet and method for manufacturing same

#66

20190390295

2019-12-26

Hot pressed part and method of manufacturing same

#67

20190382860

2019-12-19

Annealing separator composition for oriented electrical steel sheet, oriented electrical steel sheet, and method for manufacturing oriented electrical steel sheet

#68

20190366407

2019-12-05

METHOD OF PRODUCING A MOTOR VEHICLE COMPONENT FROM A HIGH-STRENGTH STEEL ALLOY HAVING DUCTILE PROPERTIES AND MOTOR VEHICLE COMPONENT

#69

20190321920

2019-10-24

Grain-oriented electrical steel sheet and magnetic domain refinement method therefor

#70

20190309407

2019-10-10

Method of fabricating a nitrided low-alloy steel part

#71

20190276911

2019-09-12

Annealing separating agent composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet, and method for manufacturing grain oriented electrical steel sheet

#72

20190271087

2019-09-05

Grain-oriented electrical steel sheet

#73

20190256985

2019-08-22

Oriented electromagnetic steel sheet and method for manufacturing oriented electromagnetic steel sheet

#74

20190161821

2019-05-30

STEEL SHEET FOR HOT PRESSING, AND METHOD OF MANUFACTURING THE HOT-PRESSED STEEL SHEET MEMBER

#75

20190151951

2019-05-23

Austenitic stainless steel workpiece

#76

20190112684

2019-04-18

STEEL SHEET SUITABLE FOR ENAMELLING AND METHOD FOR PRODUCING SUCH A SHEET

#77

20190112683

2019-04-18

STEEL SHEET SUITABLE FOR ENAMELLING AND METHOD FOR PRODUCING SUCH A SHEET

#78

20190040487

2019-02-07

Multilayer steel and method of reducing liquid metal embrittlement

#79

20180371576

2018-12-27

Annealing separator for oriented electrical steel sheet, oriented electrical steel sheet, and manufacturing method of oriented electrical steel sheet

#80

20180305784

2018-10-25

Grain-oriented electrical steel sheet and decarburized steel sheet used for manufacturing the same

#81

20180237877

2018-08-23

MITIGATING LIQUID METAL EMBRITTLEMENT IN ZINC-COATED PRESS HARDENED STEELS

#82

20180202018

2018-07-19

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

#83

20180119244

2018-05-03

GRAIN-ORIENTED ELECTRICAL STEEL SHEET, MANUFACTURING METHOD THEREFOR, AND METHOD FOR PREDICTING TRANSFORMER NOISE PROPERTY

#84

20180080096

2018-03-22

Decarburized self-piercing rivet

#85

20180066334

2018-03-08

Grain-oriented electrical steel sheet

#86

20180057956

2018-03-01

METHOD FOR FORMING LINEAR GROOVE ON STEEL STRIP AND METHOD FOR MANUFACTURING GRAIN-ORIENTED ELECTRICAL STEEL SHEET

#87

20180043474

2018-02-15

Grain-oriented electrical steel sheet

#88

20180030559

2018-02-01

Grain-oriented electrical steel sheet and method for manufacturing same

#89

20170361378

2017-12-21

COMPACTING OF GAS ATOMIZED METAL POWDER TO A PART

#90

20170283903

2017-10-05

Process for producing grain-oriented electrical steel strip and grain-oriented electrical steel strip obtained according to said process

#91

20170271061

2017-09-21

Grain-oriented electrical steel sheet and manufacturing method therefor

#92

20170233871

2017-08-17

Pre-coating agent composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet comprising same, and manufacturing method therefor

#93

20170088915

2017-03-30

Method for producing grain-oriented electrical steel sheet

#94

20170081740

2017-03-23

Method for producing grain-oriented electrical steel sheet

#95

20170037490

2017-02-09

Method for calculating the combination of properties being established for a deformable lightweight steel

#96

20170029915

2017-02-02

Hot-pressed steel sheet member

#97

20160379754

2016-12-29

METHOD FOR PRODUCING A FERROMAGNETIC COMPONENT FOR A TORQUE SENSOR OF A VEHICLE STEERING SHAFT, AND TORQUE SENSOR

#98

20160312332

2016-10-27

Lightweight steel sheet having excellent strength and ductility and method for manufacturing same

#99

20160303652

2016-10-20

Iron powder for dust cores

#100

20160276081

2016-09-22

GRAIN ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME

#101

20160273067

2016-09-22

Steel bar

#102

20160237545

2016-08-18

Method of fabricating a nitrided low-alloy steel part

#103

20160194731

2016-07-07

Grain-oriented electrical steel sheet, and method for manufacturing the same

#104

20160168655

2016-06-16

Method for manufacturing duplex stainless steel sheet having reduced inclusions

#105

20160114391

2016-04-28

Finish heat treatment method and finish heat treatment apparatus for iron powder

#106

20160111190

2016-04-21

Process for producing grain-oriented electrical steel strip

#107

20160108488

2016-04-21

Process for producing grain-oriented electrical steel strip and grain-oriented electrical steel strip obtained according to said process

#108

20160020006

2016-01-21

Method for producing grain-oriented electrical steel sheet

#109

20160012949

2016-01-14

Method for producing grain-oriented electrical steel sheet

#110

20150314569

2015-11-05

Steel sheet and fabrication method thereof

#111

20150302962

2015-10-22

Oriented silicon steel and method for manufacturing same

#112

20150255211

2015-09-10

Manufacturing method of common grain-oriented silicon steel with high magnetic induction

#113

20150197836

2015-07-16

Fe-based metal sheet and manufacturing method thereof

#114

20140069555

2014-03-13

Fe-based metal sheet and manufacturing method thereof

#115

20130251998

2013-09-26

Graphene-coated steel sheet, and method for manufacturing same

#116

20130133791

2013-05-30

METHOD FOR DECARBURIZATION OF ROTOR FORGING

#117

20130000786

2013-01-03

Manufacturing method of grain-oriented electrical steel sheet

#118

20120312424

2012-12-13

Method of manufacturing grain-oriented electrical steel sheet

#119

20120312423

2012-12-13

METHOD OF MANUFACTURING GRAIN-ORIENTED ELECTRICAL STEEL SHEET

#120

20110139313

2011-06-16

Manufacturing method of oriented SI steel with high electric-magnetic property

#121

20100319812

2010-12-23

Method for producing a surface-decarburised hot-rolled strip

#122

20090266449

2009-10-29

METHOD OF CARBURIZING AND QUENCHING A STEEL MEMBER

#123

20090084151

2009-04-02

Process for producing seamless stainless steel pipe

#124

20090064749

2009-03-12

Process for producing stainless steel pipe

#125

20080271819

2008-11-06

Ultra-high magnetic flux density grain-oriented electrical steel sheet excellent in iron loss at a high magnetic flux density and film properties and method for producing the same

#126

20050064095

2005-03-24

Method for applying wear and corrosion resistant coating to cast iron

#127

18901033

2025-07-15

Electrical steel with low iron loss and method for controlling tension thereof during decarburization annealing