ClassID:

119009

C21D8/0257 - CPC Classification

Classification description:

Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment with diffusion of elements, e.g. decarburising, nitriding

Recent Application in this class:
#1
20260092344
2026-04-02

NON-ORIENTED ELECTRICAL STEEL SHEET, IRON CORE, MANUFACTURING METHOD FOR IRON CORE, MOTOR, AND MANUFACTURING METHOD FOR MOTOR

#2
20250305105
2025-10-02

PRE-COATED STEEL SHEET WITH ALUMINUM OR ALUMINUM ALLOY PRE-COATING, MANUFACTURING METHOD AND HOT STAMPED COMPONENTS

#3
20250283202
2025-09-11

Coated steel sheet and high strength press hardened steel part and method of manufacturing the same

#4
20250236935
2025-07-24

Grain-Oriented Electrical Steel Sheet and Method for Its Production

#5
20240392422
2024-11-28

BEARING STEEL WITH IMPROVED INSULATION PERFORMANCE

#6
20240344164
2024-10-17

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

#7
20240287663
2024-08-29

HIGH STRENGTH STEEL SHEET

#8
20240271243
2024-08-15

HIGH-STRENGTH GALVANIZED STEEL SHEET AND MEMBER, AND METHOD FOR MANUFACTURING SAME

#9
20240229178
2024-07-11

NITRIDING TREATMENT METHOD FOR STEEL COMPONENT

#10
20240158884
2024-05-16

CLAD STEEL PLATE, MEMBER, AND PRODUCTION METHODS FOR SAME

#11
20240141465
2024-05-02

MARTENSITTC STEEL AND METHOD OF MANUFACTURING A MARTENSITIC STEEL

#12
20240132985
2024-04-25

NITRIDING TREATMENT METHOD FOR STEEL COMPONENT

#13
20240117517
2024-04-11

Fe-BASED ELECTROPLATED STEEL SHEET, ELECTRODEPOSITION-COATED STEEL SHEET, AUTOMOTIVE PART, METHOD OF PRODUCING ELECTRODEPOSITION-COATED STEEL SHEET, AND METHOD OF PRODUCING Fe-BASED ELECTROPLATED STEEL SHEET

#14
20240117456
2024-04-11

STEEL SHEET, STEEL MEMBER, AND COATED STEEL MEMBER

#15
20240101426
2024-03-28

PRODUCTION OF CARBON MATERIALS VIA METAL MELT SPINNING

#16
20240084413
2024-03-14

METHOD OF HEAT TREATING A STEEL COMPONENT

#17
20240079166
2024-03-07

GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR

#18
20240026513
2024-01-25

PRE-COATED STEEL SHEET WITH ALUMINUM OR ALUMINUM ALLOY PRE-COATING, MANUFACTURING METHOD AND HOT STAMPED COMPONENTS

#19
20240002993
2024-01-04

Coated steel sheet and high strength press hardened steel part and method of manufacturing the same

#20
20230416856
2023-12-28

STEEL SHEET FOR GAS SOFT NITRIDING

#21
20230332281
2023-10-19

High-strength hot-rolled steel sheet having excellent bendability and low-temperature and method for manufacturing same

#22
20230257844
2023-08-17

Steel sheet

#23
20230063455
2023-03-02

3D PRINTABLE HARD FERROUS METALLIC ALLOYS FOR POWDER BED FUSION

#24
20230036436
2023-02-02

GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCING SAME

#25
20230024115
2023-01-26

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

#26
20220356552
2022-11-10

Phosphatable part starting from a steel sheet coated with a metallic coating based on aluminum

#27
20220341012
2022-10-27

Hot-rolled steel sheet having excellent impact resistance, steel pipe, member, and manufacturing methods therefor

#28
20220275481
2022-09-01

HOT STAMPED STEEL

#29
20220119906
2022-04-21

Grain-oriented electrical steel sheet

#30
20220098689
2022-03-31

Method for producing grain oriented electrical steel sheet

#31
20220090246
2022-03-24

Method for producing grain oriented electrical steel sheet

#32
20220081746
2022-03-17

Method for producing grain oriented electrical steel sheet

#33
20220081744
2022-03-17

Grain-oriented electrical steel sheet having excellent insulation coating adhesion without forsterite coating

#34
20210301362
2021-09-30

3D printable hard ferrous metallic alloys for powder bed fusion

#35
20210164077
2021-06-03

High-strength hot-rolled steel sheet having excellent bendability and low-temperature and method for manufacturing same

#36
20210062313
2021-03-04

HOT-ROLLED STEEL SHEET HAVING EXCELLENT IMPACT RESISTANCE, STEEL PIPE, MEMBER, AND MANUFACTURING METHODS THEREFOR

#37
20210047716
2021-02-18

Galvannealed steel sheet

#38
20200407833
2020-12-31

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

#39
20200332379
2020-10-22

Method for manufacturing flat steel products and flat steel product

#40
20200232083
2020-07-23

Hot-dip galvanized steel sheet

#41
20200190652
2020-06-18

Method for manufacturing hot-dip galvanized steel sheet

#42
20200095656
2020-03-26

Gold-colored steel sheet and manufacturing method thereof

#43
20200094524
2020-03-26

Method for producing steel composite materials

#44
20200087773
2020-03-19

Metal carburization process to produce a uniform, concentrated solid solution of interstitial carbon workpiece and articles made from same

#45
20190218637
2019-07-18

MANUFACTURING METHOD OF STEEL COMPONENT AND STEEL COMPONENT

#46
20190112684
2019-04-18

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

#47
20190112683
2019-04-18

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

#48
20190106759
2019-04-11

Steel sheet, coated steel sheet, method for producing hot-rolled steel sheet, method for producing full hard cold-rolled steel sheet, method for producing steel sheet, and method for producing coated steel sheet

#49
20190040487
2019-02-07

Multilayer steel and method of reducing liquid metal embrittlement

#50
20190010572
2019-01-10

Method for manufacturing grain-oriented electrical steel sheet

#51
20180265958
2018-09-20

Steel compositions and solution nitriding of stainless steel thereof

#52
20180245174
2018-08-30

Method for homogenizing steel compositions

#53
20180229476
2018-08-16

Stainless steel foil

#54
20180216218
2018-08-02

Method for the manufacture of a phosphatable part starting from a steel sheet coated with a metallic coating based on aluminum

#55
20180119239
2018-05-03

3D printable hard ferrous metallic alloys for powder bed fusion

#56
20180105908
2018-04-19

Plated steel sheet

#57
20170369974
2017-12-28

Ultra-high strength, hot-dip galvanized steel sheet having excellent surface quality and coating adhesion

#58
20170314115
2017-11-02

Hot-dip galvanized steel sheet

#59
20170305114
2017-10-26

Hot-dip galvanized steel sheet

#60
20170260599
2017-09-14

Precoated sheets for manufacturing press-hardened coated steel parts

#61
20170253957
2017-09-07

Method for producing a nitrided packaging steel

#62
20170130304
2017-05-11

Alloy with High Core Hardness Suitable for Rapid Nitriding

#63
20170129556
2017-05-11

Nitrided track pin for track chain assembly of machine

#64
20170009312
2017-01-12

Stainless steel foil and method of production of same

#65
20160194731
2016-07-07

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

#66
20160160335
2016-06-09

HIGH-STRENGTH PLATED STEEL SHEET HAVING SUPERIOR PLATING PROPERTIES, WORKABILITY, AND DELAYED FRACTURE RESISTANCE, AND METHOD FOR PRODUCING SAME

#67
20160017452
2016-01-21

Process for manufacturing press-hardened coated steel parts and precoated sheets allowing these parts to be manufactured

#68
20160010170
2016-01-14

Ultrathin Alloys

#69
20150197836
2015-07-16

Fe-based metal sheet and manufacturing method thereof

#70
20150083278
2015-03-26

High-strength hot-dip galvanized steel sheet excellent in impact resistance property and manufacturing method thereof, and high-strength alloyed hot-dip galvanized steel sheet and manufacturing method thereof

#71
20140227555
2014-08-14

High-strength hot-dip galvanized steel sheet excellent in impact resistance property and high-strength alloyed hot-dip galvanized steel sheet

#72
20140069555
2014-03-13

Fe-based metal sheet and manufacturing method thereof

#73
20140065434
2014-03-06

Steel Sheet Suitable for Enamelling and Method for Producing Such a Sheet

#74
20130180305
2013-07-18

Method for producing a flat steel product which can be readily formed, flat steel product and method for producing a component from such a flat steel product

#75
20130048151
2013-02-28

Ultra high strength cold rolled steel sheet having excellent bendability

#76
20130048150
2013-02-28

Method for producing workpieces from lightweight steel having material properties that are adjustable across the wall thickness

#77
20110315275
2011-12-29

Method of treating parts for kitchen utensils

#78
20110155290
2011-06-30

Case hardening steel, carburized component, and manufacturing method of case hardening steel

#79
20100319812
2010-12-23

Method for producing a surface-decarburised hot-rolled strip

#80
20100319426
2010-12-23

Method for producing press-hardened components for motor vehicles

#81
20100003161
2010-01-07

Crude oil tank comprising a corrosion resistant steel alloy

#82
20080095657
2008-04-24

Optimization Of Steel Metallurgy To Improve Broach Tool Life

#83
20070217293
2007-09-20

Decorative product and timepiece

#84
20060037669
2006-02-23

Method for manufacturing stainless steel product by nitrogen absorption treatment and stainless steel product produced by the method

#85
20050230012
2005-10-20

Crude oil tank fabricated from steel plate