ClassID:

118915

C21D1/06 - CPC Classification

Classification description:

General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering Surface hardening

Sub-classes:
Recent Application in this class:
#1
20260139338
2026-05-21

CEMENTED CARBIDE INSERT WITH ETA-PHASE CORE

#2
20260043122
2026-02-12

METHOD FOR THERMALLY TREATING CHROMIUM STEELS

#3
20260036176
2026-02-05

METHOD OF CARBURIZING DRIVELINE COMPONENTS

#4
20250376752
2025-12-11

NITROGEN ASSISTED HARDENING OF AN ARTICLE

#5
20250354239
2025-11-20

METHOD FOR FABRICATING STEEL SHEET FOR PRESS HARDENING, AND PARTS OBTAINED BY THIS METHOD

#6
20250129442
2025-04-24

CEMENTED CARBIDE INSERT WITH ETA-PHASE CORE

#7
20250027190
2025-01-23

CHEMICAL ACTIVATION OF SELF-PASSIVATING METALS

#8
20240352562
2024-10-24

CASE HARDENING STEEL FOR WARM FORGING AND ROUGHLY-SHAPED FORGED MATERIAL MANUFACTURED USING THE SAME

#9
20240157204
2024-05-16

Mechanical and Chemical Surface Treatment of a Golf Club Head

#10
20240011142
2024-01-11

PROCESSING METHOD AND PROCESSING APPARATUS FOR METAL COMPONENT

#11
20230304116
2023-09-28

Thermal Treatment of Component

#12
20230296152
2023-09-21

Damper spring

#13
20230287963
2023-09-14

CHAIN

#14
20230212731
2023-07-06

STEEL COMPONENT

#15
20230167534
2023-06-01

Method of treating an article

#16
20230103806
2023-04-06

METHOD FOR MANUFACTURING A PART OF NITRIDED STEEL

#17
20230093813
2023-03-30

Heat treatment method for tubular shaft for drive shaft having ball spline structure and tubular shaft manufactured thereby

#18
20230042915
2023-02-09

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

#19
20230036990
2023-02-02

Method of treating a mining insert

#20
20230025678
2023-01-26

NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME

#21
20220411891
2022-12-29

ROLLING BEARING

#22
20220389960
2022-12-08

BEARING PART

#23
20220389559
2022-12-08

METHOD OF HEAT TREATING A STEEL COMPONENT

#24
20220389555
2022-12-08

Ferritic stainless steel sheet

#25
20220380881
2022-12-01

Nitriding Treatment Method and Nitriding Treatment Apparatus

#26
20220349370
2022-11-03

Components formed with high strength steel

#27
20220325669
2022-10-13

High-efficiency epicyclic gear assemblies for turbomachines and method of manufacturing thereof

#28
20220307115
2022-09-29

Steel wire and spring

#29
20220275854
2022-09-01

Method for producing a threaded nut of a threaded drive, in particular a ball screw nut of a ball screw drive

#30
20220252348
2022-08-11

HEAT TREATMENT MEMBER AND HEAT TREATMENT STRUCTURE

#31
20220235428
2022-07-28

HEAT TREATMENT FURNACE, INFORMATION PROCESSING APPARATUS AND INFORMATION PROCESSING METHOD

#32
20220220999
2022-07-14

Guiding member, mechanical system comprising such a guiding member, and method for producing such a guiding member

#33
20220064778
2022-03-03

Chemical activation of self-passivating metals

#34
20220042545
2022-02-10

CARBONITRIDED BEARING COMPONENT

#35
20220042169
2022-02-10

Asynchronous conversion of metals to metal ceramics

#36
20220042158
2022-02-10

Nitriding process for carburizing ferrium steels

#37
20220042157
2022-02-10

Soft magnetic material and method for producing the same, and electric motor containing soft magnetic material

#38
20220042156
2022-02-10

Carburized part and method for manufacturing same

#39
20220017983
2022-01-20

Carburizing bearing steel and preparation method thereof

#40
20220010416
2022-01-13

Roughly-shaped steel material for nitrided part, and nitrided part

#41
20210372485
2021-12-02

METHOD OF CARBURIZING DRIVELINE COMPONENTS

#42
20210277495
2021-09-09

Cold-rolled flat steel product for packaging materials

#43
20210222278
2021-07-22

Method of heat treating an article

#44
20210214833
2021-07-15

Method for producing surface-hardened material

#45
20210214816
2021-07-15

METHOD FOR FABRICATING STEEL SHEET FOR PRESS HARDENING, AND PARTS OBTAINED BY THIS METHOD

#46
20210214814
2021-07-15

Method and system for heat treating a workpiece

#47
20210207235
2021-07-08

STEEL SHEET FOR CARBURIZING, AND METHOD FOR MANUFACTURING STEEL SHEET FOR CARBURIZING

#48
20210172046
2021-06-10

Chemical activation of self-passivating metals

#49
20210172045
2021-06-10

HEAT-TREATMENT TRAY MEMBER AND HEAT-TREATMENT STACKED STRUCTURE

#50
20210121958
2021-04-29

Method for producing a sintered component

#51
20210102283
2021-04-08

Steel for nitrocarburizing and nitrocarburized component, and methods of producing same

#52
20210086384
2021-03-25

Helicoidal blade manufacturing system and method

#53
20210072702
2021-03-11

Watch component and watch

#54
20210054469
2021-02-25

Surface hardening method using post heat treatment of aluminum alloy oxide layer

#55
20210032716
2021-02-04

Method for producing machine component

#56
20210025017
2021-01-28

Case hardened titanium parts and method for making the same

#57
20200399751
2020-12-24

METHOD OF CASE HARDENING GEARS

#58
20200378442
2020-12-03

Bearing part and rolling bearing

#59
20200376559
2020-12-03

Hybrid process for enhanced surface hardening

#60
20200240487
2020-07-30

HELICAL COMPRESSION SPRING AND METHOD FOR PRODUCING SAME

#61
20200208246
2020-07-02

Steel material for carburized bearing part

#62
20200190609
2020-06-18

Surface hardening treatment device and surface hardening treatment method

#63
20200182318
2020-06-11

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

#64
20200182286
2020-06-11

Carburized shaft part

#65
20200181728
2020-06-11

Steel sheet for carburizing, and method for manufacturing steel sheet for carburizing

#66
20200173008
2020-06-04

Method and arrangement for processing articles

#67
20200156428
2020-05-21

Method of making automotive leaf springs

#68
20200149148
2020-05-14

Steel for nitrocarburizing, and component

#69
20200149125
2020-05-14

Producing a partially hardened formed part

#70
20200087743
2020-03-19

Surface hardening of substrates by a particle-containing cavitating waterjet

#71
20200063231
2020-02-27

MARTENSITICALLY HARDENABLE STEEL AND USE THEREOF, IN PARTICULAR FOR PRODUCING A SCREW

#72
20200040414
2020-02-06

Methods and processes of forming gears

#73
20200032377
2020-01-30

Vermicular cast iron alloy for internal combustion engine block and head

#74
20200024720
2020-01-23

NITRIDED PART AND METHOD OF PRODUCTION OF SAME

#75
20200010940
2020-01-09

STEEL ALLOY

#76
20190376173
2019-12-12

Chemical activation of self-passivating metals

#77
20190352762
2019-11-21

Case hardening steel, method of producing case hardening steel, and method of producing gear part

#78
20190352728
2019-11-21

Method For Railway Rolling Stock Unit Center Plate Strengthening And A Device to Perform It

#79
20190331197
2019-10-31

ENDLESS METAL RING AND METHOD OF PRODUCING THE SAME

#80
20190309407
2019-10-10

Method of fabricating a nitrided low-alloy steel part

#81
20190300992
2019-10-03

Steel for induction hardening

#82
20190292646
2019-09-26

Case hardened component of titanium

#83
20190292625
2019-09-26

METHOD FOR THE MANUFACTURE OF HARD SURFACE LAYER ON THE AUTOMATIC FREIGHT CAR COUPLER PART

#84
20190284676
2019-09-19

STRUCTURAL MATERIAL

#85
20190284653
2019-09-19

Surface treatment process

#86
20190226074
2019-07-25

Concurrent flow of activating gas in low temperature carburization

#87
20190226037
2019-07-25

Method for producing steel member

#88
20190224754
2019-07-25

METHOD FOR PRODUCTION OF A SINTERED COMPONENT

#89
20190218633
2019-07-18

Case hardening steel, method of producing the same, and method of producing gear parts

#90
20190203331
2019-07-04

Method for manufacturing ferritic stainless steel product

#91
20190194793
2019-06-27

Nitriding process for carburizing Ferrium steels

#92
20190177829
2019-06-13

Continuous nitriding treatment furnace and continuous nitriding treatment method

#93
20190161818
2019-05-30

COLLET CHUCK FOR CLAMPING A DENTAL TOOL AND METHOD FOR MANUFACTURING SUCH A COLLET CHUCK

#94
20190160521
2019-05-30

Manufacturing method of a cutting member

#95
20190153556
2019-05-23

Solid lubricant-coated steel articles, method and apparatus for manufacturing thereof and quenching oil used in the manufacturing

#96
20190127836
2019-05-02

Heat treatment facility

#97
20190127815
2019-05-02

Precipitation hardening steel and its manufacture

#98
20190127814
2019-05-02

Precipitation hardening stainless steel and its manufacture

#99
20190112679
2019-04-18

Surface hardening of cemented carbide body

#100
20190100827
2019-04-04

Nitriding of niobium steel and product made thereby

#101
20190093782
2019-03-28

Pressure-limiting valve

#102
20190078171
2019-03-14

Steel component, gear component, and producing method for steel component

#103
20190062861
2019-02-28

Steel, product created from said steel, and manufacturing method thereof

#104
20190061001
2019-02-28

Lamination molding apparatus and method for producing three-dimensional molded object

#105
20190040486
2019-02-07

Case hardening method for high performance long life martensitic stainless steel bearings

#106
20190032191
2019-01-31

Hollow spring member and hollow spring member production method

#107
20190032190
2019-01-31

Hollow stabilizer production method and hollow stabilizer production device

#108
20190009317
2019-01-10

Endless metal ring manufacturing method and endless metal ring resin removal device

#109
20190009316
2019-01-10

Endless metal ring manufacturing method and endless metal ring resin removal device

#110
20190003530
2019-01-03

BEARING PART AND ROLLING BEARING

#111
20190002999
2019-01-03

CASE HARDENING STEEL, CARBURIZED COMPONENT, AND MANUFACTURING METHOD OF CASE HARDENING STEEL

#112
20190002997
2019-01-03

Method and system for laser hardening of a surface of a workpiece

#113
20190001397
2019-01-03

Gear manufacturing method and gear manufactured thereby

#114
20180371603
2018-12-27

Steel, carburized steel component, and method for manufacturing carburized steel component

#115
20180371576
2018-12-27

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

#116
20180363694
2018-12-20

Bearing shaft and bearing

#117
20180363123
2018-12-20

Method and facility for carbonitriding one or more steel parts under low pressure and at a high temperature

#118
20180363122
2018-12-20

Nitrided plate part and method for producing the same

#119
20180355464
2018-12-13

Steel Article Having Improved Contact Fatigue Resistance

#120
20180347025
2018-12-06

STEEL, CARBURIZED STEEL COMPONENT, AND METHOD FOR MANUFACTURING CARBURIZED STEEL COMPONENT

#121
20180320262
2018-11-08

Carbo-nitriding process for martensitic stainless steel and stainless steel article having improved corrosion resistance

#122
20180320256
2018-11-08

High Strength Precipitation Hardenable Stainless Steel

#123
20180318972
2018-11-08

ULTRASONIC MACHINING METHOD FOR IMPROVING ABRADABILITY OF WHEEL OF LOCOMOTIVE, AND APPLICATIONS

#124
20180283497
2018-10-04

Chain component and chain

#125
20180265958
2018-09-20

Steel compositions and solution nitriding of stainless steel thereof

#126
20180237877
2018-08-23

MITIGATING LIQUID METAL EMBRITTLEMENT IN ZINC-COATED PRESS HARDENED STEELS

#127
20180236553
2018-08-23

Sliding member and method for producing same

#128
20180171427
2018-06-21

Compressive residual stress-hardened downhole tool shaft region

#129
20180155816
2018-06-07

Surface nitriding treatment method of titanium material

#130
20180127863
2018-05-10

Nitriding treatment method of steel member

#131
20180119243
2018-05-03

Method for producing a planetary gear shaft having increased hardness

#132
20180100226
2018-04-12

Nitrided or soft nitrided part with excellent wear resistance and pitting resistance, and nitriding and soft nitriding method

#133
20180094345
2018-04-05

CASE-HARDENED STEEL COMPONENT

#134
20180080539
2018-03-22

Dry variable speed drive mechanism

#135
20180080113
2018-03-22

Carburization device and carburization method

#136
20180073113
2018-03-15

CASE-HARDENABLE STAINLESS STEEL ALLOY

#137
20180066350
2018-03-08

Method and arrangement for processing articles

#138
20180045246
2018-02-15

Bearing part and rolling bearing

#139
20180030563
2018-02-01

Case hardening steel

#140
20180016651
2018-01-18

Heat treating device

#141
20180016650
2018-01-18

Methods and processes of forming gears

#142
20170370648
2017-12-28

Heat treatment system

#143
20170362695
2017-12-21

Surface treatment method and surface treatment device

#144
20170356077
2017-12-14

Low pressure carbonitriding method and furnace

#145
20170349997
2017-12-07

Method for surface treatment of a steel component by nitriding or nitrocarburising, oxidising and then impregnating

#146
20170349995
2017-12-07

Ferritic stainless steel and process for producing same

#147
20170335445
2017-11-23

METHOD OF CASE HARDENING GEARS

#148
20170327917
2017-11-16

Motor vehicle component and a method of manufacturing thereof

#149
20170320121
2017-11-09

Tool for shaping and/or partially press hardening a workpiece and method for shaping and/or partially press hardening a workpiece

#150
20170314117
2017-11-02

ROLLING-CONTACT SHAFT MEMBER

#151
20170314088
2017-11-02

Zinc-coated hot formed steel component with tailored property

#152
20170298465
2017-10-19

Method for fabricating steel sheet for press hardening, and parts obtained by this method

#153
20170284452
2017-10-05

Steel material, crankshaft, and automobile component

#154
20170283957
2017-10-05

Steel for carburizing, carburized steel component, and method of producing the same

#155
20170283934
2017-10-05

Method for altering surface of metal, and metallic product

#156
20170283922
2017-10-05

Nitrided component

#157
20170282501
2017-10-05

Steel for carburizing, carburized steel component, and method of producing the same

#158
20170275741
2017-09-28

NON-THERMAL REFINED NITROCARBURIZED COMPONENT

#159
20170240986
2017-08-24

Fragmentation device with increased surface hardness and a method of producing the same

#160
20170226606
2017-08-10

Method of manufacturing a sliding camshaft

#161
20170225280
2017-08-10

METHOD FOR PRODUCING WOODWORKING SPADE BITS

#162
20170218489
2017-08-03

Steel for carbonitrided bearing

#163
20170216955
2017-08-03

Method for welding a case hardened component

#164
20170211170
2017-07-27

Carbonitrided bearing part

#165
20170198381
2017-07-13

Ferrous alloy

#166
20170198368
2017-07-13

Laser hardened crankshaft

#167
20170183764
2017-06-29

Dual phase magnetic material component and method of forming

#168
20170175215
2017-06-22

Method for producing a coated body hardened by hot forming as well as a body produced according to the method

#169
20170167538
2017-06-15

Bearing constituent member, method of manufacturing bearing constituent member, and rolling bearing

#170
20170167265
2017-06-15

STEAM TURBINE, BUCKET, AND METHOD OF MAKING BUCKET

#171
20170152591
2017-06-01

Manufacturing method of nitrided steel member

#172
20170138355
2017-05-18

Method for manufacturing a spherical-cap-shaped recess in a drive shaft, drive shaft comprising the recess, and hydrostatic axial piston machine comprising the drive shaft

#173
20170130318
2017-05-11

Steel sheet for soft-nitriding treatment, method of manufacturing same, and soft-nitrided steel

#174
20170130317
2017-05-11

Concurrent flow of activating gas in low temperature carburization

#175
20170120315
2017-05-04

Soil auger and method of manufacture

#176
20170114441
2017-04-27

Method and device for hardening workpieces, and workpieces hardened according to the method

#177
20170088912
2017-03-30

FERRITIC STAINLESS STEEL AND PRODUCTION METHOD THEREFOR (AS AMENDED)

#178
20170088911
2017-03-30

Hardfacing process and parts produced thereby

#179
20170082134
2017-03-23

Lock washer

#180
20170081738
2017-03-23

METHOD & METAL COMPONENT

#181
20170066030
2017-03-09

HOT FORMING LINE AND METHOD FOR PRODUCING HOT FORMED SHEET METAL PRODUCTS

#182
20170051374
2017-02-23

Snap fit assembly for a ruggedized multi-section structure with selective embrittlement or case hardening

#183
20170051373
2017-02-23

Rail and production method therefor

#184
20170044635
2017-02-16

Steel for surface-treated mechanical parts with high characteristics, and mechanical parts in this steel and manufacturing method thereof

#185
20170037592
2017-02-09

Integrally cast excavator bucket and manufacturing method thereof

#186
20170022596
2017-01-26

Carburizing device

#187
20170022584
2017-01-26

Method and system for laser hardening of a surface of a workplace

#188
20170016107
2017-01-19

Nitriding method and nitrided part production method

#189
20170016084
2017-01-19

Case hardening method for high performance long life martensitic stainless steel bearings

#190
20170016083
2017-01-19

Steel part and method of manufacturing the same

#191
20170009314
2017-01-12

Piston ring and its production method

#192
20160354850
2016-12-08

METHOD OF MANUFACTURING GEAR-CUTTING TOOLS

#193
20160348969
2016-12-01

HEAT TREATMENT DEVICE

#194
20160348209
2016-12-01

Method for forming a steel sheet part

#195
20160333432
2016-11-17

Case hardening steel and carburized component obtained therefrom

#196
20160319472
2016-11-03

Tool for textiles and production method for same

#197
20160319406
2016-11-03

High Strength Precipitation Hardenable Stainless Steel

#198
20160312854
2016-10-27

CVT ring member and method for manufacturing the same

#199
20160312328
2016-10-27

Multi-track laser surface hardening of low carbon cold rolled closely annealed (CRCA) grades of steels

#200
20160305007
2016-10-20

METHOD OF MANUFACTURING FERROUS METAL COMPONENT

#201
20160298225
2016-10-13

Steel alloy and a component comprising such a steel alloy

#202
20160298224
2016-10-13

Production method of carburized steel component and carburized steel component

#203
20160290437
2016-10-06

Metal ring and manufacturing method for metal ring

#204
20160289812
2016-10-06

Process for manufacturing high-nitrogen stainless steel pipe with high strength, high ductility, and excellent corrosion and heat resistance

#205
20160281548
2016-09-29

CAMSHAFT ADJUSTING DEVICE

#206
20160281185
2016-09-29

Producing a partially hardened formed part

#207
20160273587
2016-09-22

BEARING STEEL

#208
20160273078
2016-09-22

COPPER-NICKEL-TIN ALLOY WITH MANGANESE

#209
20160273067
2016-09-22

Steel bar

#210
20160245367
2016-08-25

Chain element

#211
20160244869
2016-08-25

Nitriding process method of steel member

#212
20160237545
2016-08-18

Method of fabricating a nitrided low-alloy steel part

#213
20160237515
2016-08-18

HOT-ROLLED STEEL SHEET HAVING EXCELLENT SURFACE HARDNESS AFTER CARBURIZING HEAT TREATMENT AND EXCELLENT COLD WORKABILITY

#214
20160223259
2016-08-04

Multi-chamber furnace for vacuum carburizing and quenching of gears, shafts, rings and similar workpieces

#215
20160215360
2016-07-28

Method for producing a steel component provided with a metallic coating providing protection against corosion

#216
20160208875
2016-07-21

SPRING AND METHOD FOR MANUFACTURING THE SPRING

#217
20160208855
2016-07-21

Method of manufacturing shell type needle roller bearing and manufacturing jig used for manufacturing thereof

#218
20160208854
2016-07-21

Rolling device

#219
20160208372
2016-07-21

LATTICE MATERIALS AND STRUCTURES AND RELATED METHODS THEREOF

#220
20160208369
2016-07-21

Electrodeposition method for preparing polycrystalline copper having improved mechanical and physical properties

#221
20160207094
2016-07-21

Mechanical structural component and method for manufacturing same

#222
20160201175
2016-07-14

AGE-HARDENABLE STEEL

#223
20160193643
2016-07-07

Process for forming aluminum alloy parts with tailored mechanical properties

#224
20160185404
2016-06-30

Explosively depth hardened crawler shoes

#225
20160178009
2016-06-23

Bearing part, rolling bearing, and method for manufacturing bearing part

#226
20160175998
2016-06-23

Superalloy component braze repair with isostatic solution treatment

#227
20160160912
2016-06-09

JOURNAL BEARING FOR UNIVERSAL JOINTS AND METHOD FOR PRODUCING A JOURNAL BEARING

#228
20160160327
2016-06-09

Steel for nitrocarburizing, nitrocarburized steel part, and producing method of nitrocarburized steel part

#229
20160158844
2016-06-09

Method of producing alloyed metallic products

#230
20160145732
2016-05-26

Carburized component

#231
20160145707
2016-05-26

Process and Installation for Producing a Press-Hardened Sheet Steel Component

#232
20160145705
2016-05-26

WEAR-RESISTANT, PARTIALLY UNCOATED STEEL PARTS AND METHODS OF PRODUCING SAME

#233
20160138674
2016-05-19

Manufacturing method for multi-layered ring

#234
20160131189
2016-05-12

Bearing component and rolling bearing

#235
20160131188
2016-05-12

Bearing component and rolling bearing

#236
20160123397
2016-05-05

Bearing component and rolling bearing

#237
20160123396
2016-05-05

Bearing component and rolling bearing

#238
20160122858
2016-05-05

Carburized component and method for manufacturing same

#239
20160101452
2016-04-14

Hot extrusion die tool and method of making same

#240
20160067763
2016-03-10

Method of forming a sheet steel workpiece

#241
20160060737
2016-03-03

Case hardening steel

#242
20160053359
2016-02-25

Process and apparatus for thermochemically hardening workpieces

#243
20160032415
2016-02-04

Heat treat production fixture

#244
20160017454
2016-01-21

Hardfacing process and parts produced thereby

#245
20160017450
2016-01-21

Localized hardening of metallic surfaces

#246
20160010166
2016-01-14

Roughly shaped material for induction hardened components and method for producing same

#247
20160003300
2016-01-07

BEARING PART AND ROLLING BEARING

#248
20160002745
2016-01-07

HOT-ROLLED STEEL SHEET HAVING EXCELLENT DRAWABILITY AND POST-PROCESSING SURFACE HARDNESS

#249
20150376764
2015-12-31

PROCESS FOR MANUFACTURING A FIXING DEVICE

#250
20150376763
2015-12-31

Non-thermal refined soft-nitrided component

#251
20150368780
2015-12-24

Surface layer hardened metal material and surface layer hardening method

#252
20150345421
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Method of manufacturing an integrated member

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Method for treating a component such as a gearwheel

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Method and compression apparatus for introducing residual compression into a component having a regular or an irregular shaped surface

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Carburized steel part having excellent low cycle bending fatigue strength

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