ClassID:

118918

C21D1/10 - CPC Classification

Classification description:

General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering; Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction

Recent Application in this class:
#1
20250327479
2025-10-23

CRANKSHAFT AND METHOD OF MANUFACTURING THE SAME

#2
20250327144
2025-10-23

TRAVERSE HARDENING DEVICE

#3
20250318020
2025-10-09

TRAVERSE HARDENING DEVICE AND TRAVERSE HARDENING METHOD

#4
20250305103
2025-10-02

STEEL FOR INDUCTION HARDENING

#5
20250283188
2025-09-11

METHOD FOR QUENCHING A RACK USING A GAS FLOW

#6
20250179599
2025-06-05

MECHANICAL STRUCTURAL PART AND METHOD FOR MANUFACTURING SAME

#7
20240327943
2024-10-03

MECHANICAL STRUCTURAL MEMBER AND PRODUCTION METHOD FOR SAME

#8
20240301523
2024-09-12

ULTRA-DEEP INDUCTION HARDENING FOR TRACK PADS

#9
20240254610
2024-08-01

Hot-Formed Steel Part and Manufacturing Method

#10
20240141449
2024-05-02

HEAT TREATMENT METHOD OF BEARING RING

#11
20230271635
2023-08-31

RAILWAY AXLE

#12
20230220505
2023-07-13

Method of induction-hardening a rolling-element bearing ring

#13
20230082585
2023-03-16

Method for Inductive Surface Layer Hardening

#14
20230080412
2023-03-16

Method for Inductive Surface Layer Hardening

#15
20220186332
2022-06-16

METHOD AND DEVICE FOR INDUCTION HARDENING

#16
20220159791
2022-05-19

High-frequency hardening apparatus

#17
20220135156
2022-05-05

Track pad with uniform hardened region

#18
20220128135
2022-04-28

Ball screw, method for manufacturing ball screw, power steering device, and method for manufacturing power steering device

#19
20210285078
2021-09-16

Shaft part

#20
20210285067
2021-09-16

MICROTREATMENT OF IRON-BASED ALLOY, APPARATUS AND METHOD THEREFOR AND ARTICLES RESULTING THEREFROM

#21
20210033144
2021-02-04

Adjustable spacer with hardened ends

#22
20200391275
2020-12-17

Process of manufacturing of segments for carbon thrust bearing

#23
20200340082
2020-10-29

Additive manufacturing methods using aluminum-rare earth alloys and products made using such methods

#24
20200340074
2020-10-29

Methods of manufacturing hypoid gears

#25
20200308663
2020-10-01

Quenching nozzle for induction hardening system

#26
20200300303
2020-09-24

Method for producing a rolling bearing ring having an improved robustness against the formation of white etching cracks (WEC)

#27
20200263732
2020-08-20

Adjustable spacer with hardened ends

#28
20200199704
2020-06-25

METHOD FOR HEAT TREATING WITH A GRADUAL TEMPERATURE PROFILE

#29
20190352729
2019-11-21

INDUCTION-HARDENING SYSTEM FOR INDUCTION HARDENING OF A LARGE ROLLING-ELEMENT BEARING RING

#30
20190338806
2019-11-07

Adjustable spacer with hardened ends

#31
20190330709
2019-10-31

METHOD FOR HEAT TREATING A CRANKSHAFT FOR A VEHICLE PROPULSION SYSTEM

#32
20190316220
2019-10-17

Bearing bushing for track, and method for producing the same

#33
20190309382
2019-10-10

AXLE FOR RAIL VEHICLES

#34
20190270595
2019-09-05

Work piece conveyance jig and conveyance device provided with same, and induction heating device

#35
20190256937
2019-08-22

Apparatus for microtreatment of iron-based alloy

#36
20190241986
2019-08-08

Heat treatment method of rod-shape workpiece

#37
20190239291
2019-08-01

INDUCTION HEATING APPARATUS AND INDUCTION HEATING METHOD

#38
20190233911
2019-08-01

Heat treatment equipment and heat treatment method

#39
20190208585
2019-07-04

Large scale metal forming

#40
20190191496
2019-06-20

Heating apparatus and heating method

#41
20190143398
2019-05-16

LASER-HARDENED FILLET-ROLLED CRANKSHAFT

#42
20190136911
2019-05-09

Adjustable spacer with hardened ends

#43
20190098707
2019-03-28

Heating coil

#44
20190085425
2019-03-21

METHOD FOR THERMALLY TREATING A FLAT STEEL PRODUCT, THERMALLY TREATED FLAT STEEL PRODUCT AND USE THEREOF

#45
20190085424
2019-03-21

Heat treatment apparatus, heat treatment method for steel workpiece, and hot bending method for steel workpiece

#46
20190078171
2019-03-14

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

#47
20190062893
2019-02-28

Method for producing at least one component for a hydraulic displacement unit

#48
20190055618
2019-02-21

Heat-processing device and heat-processing method

#49
20190017395
2019-01-17

Propeller blades

#50
20190017141
2019-01-17

Method of heat treating a fastening member

#51
20180363086
2018-12-20

Method for induction surface hardening of a ring surface

#52
20180347623
2018-12-06

Method for producing bearing ring, double row tapered roller bearing, and method for producing double row tapered roller bearing

#53
20180347005
2018-12-06

Double row tapered roller bearing, bearing ring, and method for producing double row tapered roller bearing

#54
20180320737
2018-11-08

METHOD FOR PRODUCING BEARING RING AND METHOD FOR PRODUCING DOUBLE ROW TAPERED ROLLER BEARING

#55
20180274051
2018-09-27

METHOD FOR PRODUCING A STARTING MATERIAL FOR THE PRODUCTION OF METALLIC COMPONENTS HAVING REGIONS OF DIFFERENT STRENGTH

#56
20180274048
2018-09-27

Heat Treatment Method And Equipment For Mass Processing Of Components And/Or Assembly Of Components

#57
20180187280
2018-07-05

MECHANICAL COMPONENT

#58
20180179609
2018-06-28

System and Method for Induction Hardening of Metal Rings

#59
20180148897
2018-05-31

Friction apparatus

#60
20180119243
2018-05-03

Method for producing a planetary gear shaft having increased hardness

#61
20180099708
2018-04-12

Scallop resistant idler heat treatment

#62
20180080103
2018-03-22

Additive manufacturing methods using aluminum-rare earth alloys and products made using such methods

#63
20180080102
2018-03-22

Surface-hardened aluminum-rare earth alloys and methods of making the same

#64
20180072127
2018-03-15

Stabilizer and method for manufacturing same

#65
20180044756
2018-02-15

Tooling for stress relieving a turbine wheel and shaft

#66
20170150553
2017-05-25

Heating apparatus and heating method

#67
20170145600
2017-05-25

All-steel fitting

#68
20170072477
2017-03-16

PARTIALLY HARDENED ROTARY TOOL AND CORRESPONDING PRODUCTION METHOD

#69
20170067140
2017-03-09

Steel for induction hardening

#70
20170067130
2017-03-09

Induction hardening apparatus, induction hardening method, induction heating coil, heat treatment apparatus, and heat treatment method

#71
20170066299
2017-03-09

Stabilizer bar and process of producing a stabilizer bar

#72
20170029910
2017-02-02

Workpiece for induction hardening

#73
20170016082
2017-01-19

Heat treatment system and heat treatment method

#74
20160366727
2016-12-15

Molten metal handling device heating system

#75
20160362757
2016-12-15

Induction heating apparatus, carriers, and methods for heat treating parts

#76
20160316523
2016-10-27

Induction heating coil and induction heating method

#77
20160298203
2016-10-13

High fatigue strength components requiring areas of high hardness

#78
20160230244
2016-08-11

Method for thermally treating ring-shaped member

#79
20160230243
2016-08-11

HEAT TREATMENT METHOD FOR RING-SHAPED MEMBER AND HEAT TREATMENT EQUIPMENT FOR RING-SHAPED MEMBER

#80
20160208354
2016-07-21

Heat treatment method for steel material

#81
20160193749
2016-07-07

Tie strap with hardened integrated rivet for a saw chain

#82
20160153496
2016-06-02

METHOD FOR HEAT-TREATING A RING-SHAPED MEMBER, METHOD FOR PRODUCING A RING-SHAPED MEMBER, RING-SHAPED MEMBER, BEARING RING, ROLLING BEARING, AND METHOD FOR PRODUCING A BEARING RING

#83
20160138124
2016-05-19

Jig and heating apparatus with a jig

#84
20160138121
2016-05-19

Heating apparatus, heat treatment apparatus, and heating method

#85
20160068922
2016-03-10

Hardened titanium structure for transmission gear applications

#86
20160010166
2016-01-14

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

#87
20150376731
2015-12-31

Steel wire for spring and method for manufacturing same

#88
20150368735
2015-12-24

Method for induction surface hardening of a ring surface

#89
20150364247
2015-12-17

Planar inductor

#90
20150354020
2015-12-10

Induction hardening apparatus and methods

#91
20150344985
2015-12-03

Induction heating apparatus, carriers, and methods for heat treating parts

#92
20150334784
2015-11-19

Induction heating stand assembly

#93
20150322560
2015-11-12

Cr-containing austenitic alloy and method for producing the same

#94
20150319810
2015-11-05

Induction heat treatment of an annular workpiece

#95
20150315669
2015-11-05

Heat treatment method and method of manufacturing machine part

#96
20150122801
2015-05-07

Large scale metal forming

#97
20150053044
2015-02-26

Camshaft for HP common rail oil pump, manufacturing method thereof and interference assembly device thereof

#98
20150034628
2015-02-05

Induction hardening control system

#99
20150028023
2015-01-29

Heating coil, heat treatment apparatus, and heat treatment method for elongated workpiece

#100
20140367376
2014-12-18

Method and arrangement for progressive surface hardening

#101
20140367374
2014-12-18

Induction heating of springs

#102
20140305552
2014-10-16

Method for heat-treating ring-shaped member and method for producing ring-shaped member

#103
20140251507
2014-09-11

Steel for surface hardening for machine structural use and part for machine structural use

#104
20140246423
2014-09-04

Method of producing a high-frequency heat treatment coil

#105
20140091063
2014-04-03

SYSTEM FOR HARDENING A CYLINDRICAL METAL COMPONENT

#106
20140083571
2014-03-27

Induction hardening apparatus and methods

#107
20140015280
2014-01-16

Structure for front side frames of automobile

#108
20140007725
2014-01-09

Method for treating a component such as a gearwheel

#109
20130319154
2013-12-05

Steel gear and manufacturing method for the same

#110
20130312560
2013-11-28

Steel gear and manufacturing method for the same

#111
20130301969
2013-11-14

Method for producing a bearing ring

#112
20130292007
2013-11-07

High temperature nitriding of titanium parts

#113
20130248519
2013-09-26

Device for the localized heating of parts of coated metal pipes and of parts of their protective coating

#114
20130240506
2013-09-19

Induction hardening system and method

#115
20130220489
2013-08-29

Steel for machine structure use for surface hardening and steel part for machine structure use

#116
20130216856
2013-08-22

MECHANICAL COMPONENT AND METHOD OF SURFACE HARDENING

#117
20130193134
2013-08-01

Turbine induction temper system

#118
20130175260
2013-07-11

High frequency heating coil

#119
20130152394
2013-06-20

Method for inductive hardening of teeth of gearwheels

#120
20130105454
2013-05-02

Thermal treatment method for micromechanical horological parts

#121
20130044852
2013-02-21

Treatment of a heater tube intended for a pressurizer of the primary cooling system of a nuclear reactor

#122
20120247619
2012-10-04

Carburized steel and its process of manufacture

#123
20120234824
2012-09-20

Heating apparatus, heat treatment apparatus, and heating method

#124
20120225761
2012-09-06

Forged roll meeting the requirements of the cold rolling industry and a method for production of such a roll

#125
20120217235
2012-08-30

Surface treatment system, a surface treatment process and a system treated component

#126
20120211126
2012-08-23

METHOD OF INDUCTION HEATING AND QUENCHING

#127
20120193000
2012-08-02

Steel for induction hardening and induction hardened steel part

#128
20120187113
2012-07-26

Undercut crankshaft hardening coil

#129
20120160832
2012-06-28

GEAR PART AND METHOD OF PRODUCING THEREOF

#130
20120145288
2012-06-14

Induction heating systems and methods for producing an object having a varying hardness along the length of the object

#131
20120125919
2012-05-24

Induction hardening apparatus, induction hardening method, induction heating coil, heat treatment apparatus, and heat treatment method

#132
20120121420
2012-05-17

METHOD FOR HEAT-TREATING A RING-SHAPED MEMBER, METHOD FOR PRODUCING A RING-SHAPED MEMBER, RING-SHAPED MEMBER, BEARING RING, ROLLING BEARING, AND METHOD FOR PRODUCING A BEARING RING

#133
20120118434
2012-05-17

STEEL MEMBER HAVING NITROGEN COMPOUND LAYER AND PROCESS FOR PRODUCING SAME

#134
20120103974
2012-05-03

TOOL AND METHOD FOR HEAT TREATING AT LEAST PART OF A METALLIC STRUCTURAL PART

#135
20120097663
2012-04-26

INDUCTION HARDENING CONTROL SYSTEM

#136
20120091122
2012-04-19

SELECTIVE CASE DEPTH THERMO-MAGNETIC PROCESSING AND APPARATUS

#137
20120037279
2012-02-16

Structural material

#138
20120031211
2012-02-09

Shaft part formed with a rolling groove

#139
20120031160
2012-02-09

LOW CARBON WELDED TUBE AND PROCESS OF MANUFACTURE THEREOF

#140
20120024839
2012-02-02

High frequency induction heating treatment equipment and method and induction heated and thus treated product

#141
20120012576
2012-01-19

METHOD FOR PRODUCING A TOOL-SYSTEM MODULE

#142
20110284526
2011-11-24

CLAMPING APPARATUS AND METHOD OF HEAT-TREATING A LONG MATERIAL

#143
20110274578
2011-11-10

Steel for surface hardening for machine structural use and part for machine structural use

#144
20110269555
2011-11-03

Outer member of constant speed universal joint

#145
20110248023
2011-10-13

Induction heat treatment of an annular workpiece

#146
20110247732
2011-10-13

Induction hardening system and method

#147
20110186186
2011-08-04

Iron and steel material having quenched surface layer part, method for producing the iron and steel material, and quenched component

#148
20110174806
2011-07-21

Device for heating and method for heating

#149
20110147373
2011-06-23

Device for hardening the teeth of gear wheels by individual inductive heat treatment for each tooth, using several inductors

#150
20110126791
2011-06-02

Exhaust poppet valve and solution heat treatment method of the same

#151
20110089167
2011-04-21

Arrangement Structure of Guide Chip for High-Frequency Induction Heating Coil

#152
20110089164
2011-04-21

Device for hardening a cylindrical section of a workpiece and use of such a device

#153
20110084063
2011-04-14

Arrangement and method for powering inductors for induction hardening

#154
20110084062
2011-04-14

Device for inductive heating and use of such a device

#155
20110073591
2011-03-31

Guide Chip Structure for High-Frequency Induction Heating Coil

#156
20110073590
2011-03-31

Inductor and use of such an inductor

#157
20110073222
2011-03-31

Heat-Treatment Process for a Steel

#158
20110041959
2011-02-24

STEEL FOR MACHINE STRUCTURE USE FOR SURFACE HARDENING AND STEEL PART FOR MACHINE STRUCTURE USE

#159
20110011499
2011-01-20

Method and device for hardening profiles

#160
20110003645
2011-01-06

Constant velocity universal joint

#161
20110000584
2011-01-06

Process for forming steel

#162
20100329884
2010-12-30

Turbine rotor blade

#163
20100323803
2010-12-23

Constant velocity universal joint component and manufacturing method thereof

#164
20100319642
2010-12-23

Roller follower, valve train, induction hardening apparatus, method of heat treatment of shaft member, method of manufacturing shaft, and shaft

#165
20100314006
2010-12-16

STEEL FOR INDUCTION HARDENING WITH EXCELLENT COLD WORKABILITY, ROLLING MEMBER MADE OF THE SAME, AND MOTION GUIDE DEVICE USING ROLLING MEMBER

#166
20100313423
2010-12-16

Needle roller bearing

#167
20100307643
2010-12-09

METHOD FOR REDUCING STRESS IN A CONDUIT BRACE ASSEMBLY

#168
20100296764
2010-11-25

Method of heat treating a steel bearing component

#169
20100263770
2010-10-21

FLASH TEMPERING PROCESS AND APPARATUS

#170
20100258553
2010-10-14

Induction hardening monitoring apparatus

#171
20100252150
2010-10-07

Heat treatment method of pin for endless track

#172
20100243644
2010-09-30

Insulated structure of induction heating coil

#173
20100243643
2010-09-30

DEVICE AND METHOD FOR PERFORMING A LOCALIZED INDUCTION HARDENING TREATMENT ON MECHANICAL COMPONENTS, SPECIFICALLY THRUST BLOCKS FOR LARGE-SIZED ROLLING BEARINGS

#174
20100227700
2010-09-09

Clinch nut fastening method

#175
20100200123
2010-08-12

Hardened titanium structure for transmission gear applications

#176
20100181305
2010-07-22

Induction heat treatment of complex-shaped workpieces

#177
20100180442
2010-07-22

Injection valve, method for its production, and apparatus for performing the method

#178
20100154940
2010-06-24

MELT-TREATED RIM OF A PISTON COMBUSTION BOWL

#179
20100147834
2010-06-17

Method for Induction Heating of a Metallic Workpiece

#180
20100139811
2010-06-10

Carbonitrided induction hardened steel part superior in surface fatigue strength at high temperature and method of production of same

#181
20100132854
2010-06-03

Microtreatment of iron-based alloy, apparatus and method therefor, and articles resulting therefrom

#182
20100132853
2010-06-03

Method for the Treatment of Metal Sheets

#183
20100116377
2010-05-13

HYBRID CARBURIZATION WITH INTERMEDIATE RAPID QUENCH

#184
20100108665
2010-05-06

Induction heating system and induction heating method of metal plate

#185
20100084051
2010-04-08

Method for manufacturing carburized part, and steel part

#186
20100059506
2010-03-11

Inductor for induction hardening of metal, rod-shaped toothed racks

#187
20100032059
2010-02-11

PROCESS TO MANUFACTURE SHAFT AND GUIDE PINS AS USED FOR PLANETARY SYSTEMS

#188
20090321144
2009-12-31

PROTECTING AN ELEMENT FROM EXCESSIVE SURFACE WEAR BY LOCALIZED HARDENING

#189
20090308501
2009-12-17

Undercut crankshaft hardening coil

#190
20090301615
2009-12-10

Method for producing an internal combustion engine valve and valve obtained in this manner

#191
20090301612
2009-12-10

Induction heat treatment method, induction heat treatment installation and induction-heat-treated product

#192
20090301608
2009-12-10

Carburized and induction-hardened component

#193
20090276992
2009-11-12

METHOD FOR MANUFACTURING RACEWAY MEMBER, METHOD FOR MANUFACTURING VALVE TRAIN AND RACEWAY MEMBER

#194
20090255609
2009-10-15

Triple phase titanium fan and compressor blade and methods therefor

#195
20090199404
2009-08-13

Manufacturing method of an outer ring for a bearing unit

#196
20090145525
2009-06-11

Induction hardened hollow driving shaft

#197
20090133785
2009-05-28

LEAF SPRING MATERIAL AND MANUFACTURING METHOD THEREOF

#198
20090101246
2009-04-23

Induction hardening method and jig used in induction hardening process

#199
20090072452
2009-03-19

Structure for Casehardening a Fixture of a Guide Plate of a Chain Saw

#200
20090050622
2009-02-26

Heat treatment of flexibly rolled strip

#201
20090045556
2009-02-19

Equipment and method for hardening treatment of metallic parts

#202
20090038713
2009-02-12

Rolling apparatus

#203
20090033008
2009-02-05

QUALITY WARRANTY SYSTEM IN INDUCTION HEAT TREATMENT FACILITIES

#204
20090023506
2009-01-22

Induction hardened hollow driving shaft

#205
20090020194
2009-01-22

Method of Induction Hardening

#206
20080276753
2008-11-13

Method of Manufacturing Cam Shaft, Cam Shaft, and Cam Lobe Material Used in the Same

#207
20080268991
2008-10-30

Method for producing a conical pulley, a conical pulley, and a belt-driven conical-pulley transmission

#208
20080264529
2008-10-30

Apparatus and Method for Continuously Processing Long Bar by Heat Treatment Using Induction Heating

#209
20080264524
2008-10-30

High-Strength Steel and Metal Bolt Excellent In Character of Delayed Fracture

#210
20080247900
2008-10-09

Component for Machine Structure, Method of Producing the Same and Material for Induction Hardening

#211
20080244892
2008-10-09

Method For Producing a Shaft Pertaining to a Starter

#212
20080149229
2008-06-26

Rolling member and producing method thereof

#213
20080141535
2008-06-19

Method for the production of a bearing ring for large-size rolling bearings

#214
20080128057
2008-06-05

Process of and device for induction-hardening helical springs

#215
20080095657
2008-04-24

Optimization Of Steel Metallurgy To Improve Broach Tool Life

#216
20080083207
2008-04-10

Mower sickle bar

#217
20080073003
2008-03-27

High frequency induction heating treatment equipment and method and induction heated and thus treated product

#218
20070246135
2007-10-25

Method of Manufacturing a Hardened Forged Steel Component

#219
20070224017
2007-09-27

Clinch nut

#220
20070209740
2007-09-13

Power transmission shaft and method for producing same

#221
20070194504
2007-08-23

Heat Treatment System

#222
20070154127
2007-07-05

Needle roller bearing

#223
20070131319
2007-06-14

FLASH TEMPERING PROCESS AND APPARATUS

#224
20070102068
2007-05-10

Heat treatment method of steel components, steel components and manufacture method of steel components

#225
20070074792
2007-04-05

Method for producing helical springs or stabilizers

#226
20070056959
2007-03-15

Device for induction hardening

#227
20070000582
2007-01-04

Steel product for induction hardening, induction-hardened member using the same, and methods for production them

#228
20060243352
2006-11-02

Process for producing steel products having improved grain size properties and machinability

#229
20060226584
2006-10-12

Steel-member manufacturing facility, thin bearing-member and thrust bearing

#230
20060213588
2006-09-28

Induction heat treatment method, induction heat treatment installation and induction-heat-treated product

#231
20060204155
2006-09-14

Rolling bearing

#232
20060196583
2006-09-07

Steel parts for machine structure, material therefor, and method for manufacture thereof

#233
20060169374
2006-08-03

Process for the production of an articulated structural part having improved wear resistance

#234
20060162823
2006-07-27

Steel product for induction hardening, induction-hardened member using the same, and methods producing them

#235
20060153485
2006-07-13

Roller bearing with steel plate race

#236
20060076088
2006-04-13

Steel material for high strength constant velocity joint intermediate shaft and high strength constant velocity joint intermediate shaft

#237
20060027569
2006-02-09

Apparatus for hardening a cylindrical bearing on a shaft by means of induction heating utilizing an elastic element

#238
20060021679
2006-02-02

Rolling element and method of producing the same

#239
20060021225
2006-02-02

Forming method of tooth trace of gear

#240
20060008193
2006-01-12

Rolling part and power transmission part

#241
20050257860
2005-11-24

Rolling member and producing method thereof

#242
20050205171
2005-09-22

Steel for induction hardening

#243
20050188537
2005-09-01

Ported engine cylinder liner with selectively laser-hardened and induction-hardened bore

#244
20050172744
2005-08-11

Reduction gear and method and apparatus for manufacturing the reduction gear concerned, and electric power steering system with the reduction gear concerned

#245
20050161132
2005-07-28

Method and apparatus for case hardening a work piece

#246
20050161125
2005-07-28

Alloy tool steel

#247
20050121118
2005-06-09

Mechanical structural shaft component and method of manufacturing the same

#248
20050103777
2005-05-19

Gear part and method of producing thereof

#249
20050101392
2005-05-12

Power transmission shaft

#250
20050081378
2005-04-21

Arrangement for crankshaft straightening

#251
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Induction heat treatment method and coil and article treated thereby

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Induction heat treatment method and article treated thereby

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2005-02-24

Hardened steel components and process of treating the same

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Apparatus for heat treatment of structural body parts in the automobile industry

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Adjustable spacer with hardened ends

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