ClassID:

119930

C23C8/32 - CPC Classification

Classification description:

Solid state diffusion of only non-metal elements into metallic material surfaces ; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in one step; Carbo-nitriding of ferrous surfaces

Recent Application in this class:
#1
20260062786
2026-03-05

METHOD OF MANUFACTURING NITRIDED VALVE SEAT INSERT WITH SUPERSATURATED NITROGEN SURFACE LAYER AND PRODUCT THEREOF

#2
20260002244
2026-01-01

ACTIVATION OF SELF-PASSIVATING METALS USING REAGENT COATINGS FOR LOW TEMPERATURE NITROCARBURIZATION IN THE PRESENCE OF OXYGEN-CONTAINING GAS

#3
20250376752
2025-12-11

NITROGEN ASSISTED HARDENING OF AN ARTICLE

#4
20250027190
2025-01-23

CHEMICAL ACTIVATION OF SELF-PASSIVATING METALS

#5
20240271239
2024-08-15

PROCESS FOR OBTAINING A FINE-GRAINED MARTENSITIC STRUCTURE COMPONENT

#6
20240200179
2024-06-20

STEEL MATERIAL FOR CARBONITRIDING AND CARBONITRIDED STEEL MATERIAL

#7
20240102143
2024-03-28

ACTIVATION OF SELF-PASSIVATING METALS USING REAGENT COATINGS FOR LOW TEMPERATURE NITROCARBURIZATION

#8
20240084430
2024-03-14

Method to produce high corrosion and wear resistant cast iron components by water jet surface activation, nitrocarburization and thermal spray coating

#9
20240035515
2024-02-01

BEARING PART AND ROLLING BEARING

#10
20240011142
2024-01-11

PROCESSING METHOD AND PROCESSING APPARATUS FOR METAL COMPONENT

#11
20230332658
2023-10-19

System and method of making an enhanced brake rotor with improved wear resistance

#12
20230257865
2023-08-17

Method for reinforcing a steel component by carbonitriding

#13
20230193439
2023-06-22

Articles fabricated from cold-worked and case- hardened essentially co-free stainless steel alloys and methods of fabrication thereof

#14
20230193414
2023-06-22

STEEL AND STEEL COMPONENT

#15
20230018275
2023-01-19

BRAKING BAND OF A DISK FOR DISK BRAKE

#16
20230015135
2023-01-19

ENHANCED ACTIVATION OF SELF-PASSIVATING METALS

#17
20220411891
2022-12-29

ROLLING BEARING

#18
20220403901
2022-12-22

METHOD TO PRODUCE CAST IRON BRAKE DISCS WITH HIGH CORROSION AND WEAR RESISTANCE

#19
20220390000
2022-12-08

Method for producing a sintered component with a toothing

#20
20220389559
2022-12-08

METHOD OF HEAT TREATING A STEEL COMPONENT

#21
20220364216
2022-11-17

ACTIVATION OF SELF-PASSIVATING METALS USING REAGENT COATINGS FOR LOW TEMPERATURE NITROCARBURIZATION IN THE PRESENCE OF OXYGEN-CONTAINING GAS

#22
20220293312
2022-09-15

Electromagnetic steel sheet

#23
20220268162
2022-08-25

Core for high-temperature shaping of a metal part and manufacturing, regeneration and shaping process

#24
20220220999
2022-07-14

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

#25
20220220599
2022-07-14

Screen Cloth with Increased Wear Resistance and Method for Increasing the Wear Resistance of a Screen Cloth

#26
20220106000
2022-04-07

Ferritic Nitro-Carburized Track Pin for Track Chain Assembly of Machine

#27
20220074036
2022-03-10

Method for hardening a sintered component

#28
20220064778
2022-03-03

Chemical activation of self-passivating metals

#29
20220064755
2022-03-03

Method for manufacturing high-carbon bearing steel and high-carbon bearing steel manufactured therefrom

#30
20210340659
2021-11-04

Activation of self-passivating metals using reagent coatings for low temperature nitrocarburization

#31
20210214832
2021-07-15

Surface hardening treatment device and surface hardening treatment method

#32
20210172046
2021-06-10

Chemical activation of self-passivating metals

#33
20210123127
2021-04-29

Cutting blade for an agricultural implement, and method of manufacturing the same

#34
20210102283
2021-04-08

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

#35
20210071306
2021-03-11

Integrated surface treatments and coatings for artificial lift pump components

#36
20210054866
2021-02-25

BIMETALLIC SCREW WITH MARTENSITICALLY HARDENABLE STEEL

#37
20210010116
2021-01-14

STEEL COMPOSITION

#38
20200378442
2020-12-03

Bearing part and rolling bearing

#39
20200377965
2020-12-03

Method for manufacturing high-carbon bearing steel and high-carbon bearing steel manufactured therefrom

#40
20200348081
2020-11-05

Device for supporting and guiding a flow for metallic workpieces, and method for thermochemical treatment

#41
20200283882
2020-09-10

Enhanced activation of self-passivating metals

#42
20200149148
2020-05-14

Steel for nitrocarburizing, and component

#43
20200063231
2020-02-27

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

#44
20190376173
2019-12-12

Chemical activation of self-passivating metals

#45
20190338383
2019-11-07

Steel composition

#46
20190284676
2019-09-19

STRUCTURAL MATERIAL

#47
20190211435
2019-07-11

Ferritic nitrocarburized part and methods of making and using the same

#48
20190136362
2019-05-09

Coating system for tubular gripping components

#49
20190093207
2019-03-28

Enhanced activation of self-passivating metals

#50
20190040486
2019-02-07

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

#51
20190003530
2019-01-03

BEARING PART AND ROLLING BEARING

#52
20190001073
2019-01-03

SURFACE HARDENED INJECTION NEEDLE AND METHOD OF PRODUCING SUCH

#53
20180371603
2018-12-27

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

#54
20180363694
2018-12-20

Bearing shaft and bearing

#55
20180347025
2018-12-06

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

#56
20180320262
2018-11-08

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

#57
20180236553
2018-08-23

Sliding member and method for producing same

#58
20180198352
2018-07-12

Method of forming a rotor

#59
20180172034
2018-06-21

PLUNGER MEMBER USED FOR BELT TYPE CONTINUOUSLY VARIABLE TRANSMISSION

#60
20180154449
2018-06-07

Method for producing a swashplate

#61
20180119243
2018-05-03

Method for producing a planetary gear shaft having increased hardness

#62
20180105919
2018-04-19

STEEL FOR NITROCARBURIZING AND NITROCARBURIZED COMPONENT, AND METHODS OF PRODUCING SAME

#63
20180100226
2018-04-12

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

#64
20180073122
2018-03-15

Surface layer for fast diffusion and method to produce thereof

#65
20180045246
2018-02-15

Bearing part and rolling bearing

#66
20180016651
2018-01-18

Heat treating device

#67
20170314117
2017-11-02

ROLLING-CONTACT SHAFT MEMBER

#68
20170284452
2017-10-05

Steel material, crankshaft, and automobile component

#69
20170283957
2017-10-05

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

#70
20170283899
2017-10-05

CARBURIZING AUSTEMPERING PROCESS

#71
20170282501
2017-10-05

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

#72
20170275955
2017-09-28

METHOD FOR MAKING PIPE CENTRALIZER HAVING LOW-FRICTION COATING

#73
20170266719
2017-09-21

HOT-CHAMBER DIE CASTING SYSTEMS AND METHODS

#74
20170241008
2017-08-24

Method for low-pressure carbonitriding having an extended temperature range in an initial nitridation phase

#75
20170218489
2017-08-03

Steel for carbonitrided bearing

#76
20170211170
2017-07-27

Carbonitrided bearing part

#77
20170198381
2017-07-13

Ferrous alloy

#78
20170167538
2017-06-15

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

#79
20170081738
2017-03-23

METHOD & METAL COMPONENT

#80
20170058982
2017-03-02

BRAKE CORNER OUTPUT WITH FNC BRAKE ROTORS

#81
20170037592
2017-02-09

Integrally cast excavator bucket and manufacturing method thereof

#82
20170016084
2017-01-19

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

#83
20170016083
2017-01-19

Steel part and method of manufacturing the same

#84
20160327144
2016-11-10

SINTERED MACHINE PART AND MANUFACTURING METHOD THEREOF

#85
20160298225
2016-10-13

Steel alloy and a component comprising such a steel alloy

#86
20160298203
2016-10-13

High fatigue strength components requiring areas of high hardness

#87
20160208476
2016-07-21

Three-dimensional space frames assembled from component pieces and methods for making the same

#88
20160208372
2016-07-21

LATTICE MATERIALS AND STRUCTURES AND RELATED METHODS THEREOF

#89
20160184897
2016-06-30

METHOD OF PRODUCING A THREE-DIMENSIONAL COMPONENT

#90
20160178009
2016-06-23

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

#91
20160160327
2016-06-09

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

#92
20160158844
2016-06-09

Method of producing alloyed metallic products

#93
20160153495
2016-06-02

Tapered roller bearing

#94
20160131189
2016-05-12

Bearing component and rolling bearing

#95
20160131188
2016-05-12

Bearing component and rolling bearing

#96
20160130679
2016-05-12

Post Machining Multi-Step Material Working Treatment of Fluid End Housing

#97
20160123397
2016-05-05

Bearing component and rolling bearing

#98
20160123396
2016-05-05

Bearing component and rolling bearing

#99
20160102395
2016-04-14

THREE STEP SURFACE ENHANCEMENT PROCESS FOR CARBON ALLOY FLUID ENDS

#100
20160060744
2016-03-03

CASE-HARDENING STEEL AND CASE-HARDENED STEEL MEMBER

#101
20160047020
2016-02-18

Bearing steel composition

#102
20160032442
2016-02-04

Enhanced activation of self-passivating metals

#103
20160024636
2016-01-28

MANUFACTURING METHOD OF STEEL IN WHICH AN ELEMENT OF TREATMENT GAS IS DISSOLVED AND DIFFUSED

#104
20160003300
2016-01-07

BEARING PART AND ROLLING BEARING

#105
20160002986
2016-01-07

Method for making pipe centralizer having low-friction coating

#106
20150351411
2015-12-10

Baking plate for wafer or waffle baking machines, baking apparatus and method for manufacturing baking plates

#107
20150337429
2015-11-26

TREATMENT TO ENHANCE STRUCTURAL COMPONENTS

#108
20150299830
2015-10-22

Steel sheet for soft-nitriding and method for manufacturing the same

#109
20150292053
2015-10-15

METHOD FOR TREATING A CAST IRON WORKPIECE AND WORKPIECE FORMED THEREBY

#110
20150240342
2015-08-27

METHOD OF MANUFACTURING MACHINE COMPONENT

#111
20150240341
2015-08-27

Method and steel component

#112
20150225835
2015-08-13

Method and steel component

#113
20150211621
2015-07-30

SINTERED COMPONENT

#114
20150167145
2015-06-18

Method for gas carbonitriding

#115
20150159710
2015-06-11

Friction material and methods of making and using the same

#116
20150159262
2015-06-11

Method for the nitro carburization of a deep-drawn part or a stamped-bent part made of austenitic stainless steel

#117
20150159261
2015-06-11

Steel for nitrocarburizing and nitrocarburized component, and methods for producing said steel for nitrocarburizing and said nitrocarburized component

#118
20150132079
2015-05-14

Method for solution hardening of a cold deformed workpiece of a passive alloy, and a member solution hardened by the method

#119
20150129377
2015-05-14

METHOD TO INCREASE CORROSION RESISTANCE IN FERRITIC NITROCARBURIZED TREATED CAST IRON SUBSTRATES

#120
20150107723
2015-04-23

Partially carbonitriding heat treated stainless steel ferrule and manufacturing method thereof

#121
20150101710
2015-04-16

Method for low-pressure carbonitriding using a reduced temperature gradient in an initial nitridation phase

#122
20150083279
2015-03-26

NITROCARBURIZED CRANKSHAFT MEMBER AND STEEL FOR NITROCARBURIZED CRANKSHAFTS

#123
20150027591
2015-01-29

Steel material for nitriding and nitrided component

#124
20150020926
2015-01-22

STEEL FOR NITROCARBURIZING AND NITROCARBURIZED COMPONENT USING THE STEEL AS MATERIAL

#125
20150000795
2015-01-01

Case hardening steel

#126
20140366992
2014-12-18

PROCESS FOR PRODUCING CARBONITRIDED PART

#127
20140363115
2014-12-11

ROLLING BEARING AND ITS MANUFACTURING METHOD

#128
20140352848
2014-12-04

Method for adjusting pore size of porous metal material and pore structure of porous metal material

#129
20140334966
2014-11-13

Hot-rolled steel sheet for nitriding, cold-rolled steel sheet for nitriding excellent in fatigue strength, manufacturing method thereof, and automobile part excellent in fatigue strength using the same

#130
20140326365
2014-11-06

Nitrocarburized crankshaft and method of manufacturing the same

#131
20140321789
2014-10-30

MACHINE PART, ROLLING BEARING, TAPERED ROLLER BEARING, AND METHOD FOR MANUFACTURING MACHINE PART

#132
20140305548
2014-10-16

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

#133
20140299218
2014-10-09

Process for manufacturing a bellows and/or bellows

#134
20140290800
2014-10-02

Carbonitriding method having a final nitridation step during temperature decrease

#135
20140287137
2014-09-25

Method for rust-proofing mold

#136
20140254736
2014-09-11

Method for producing, from a preform made of austenitic stainless steel with a low carbon content, a wear-resistant and corrosion-resistant cladding for a nuclear reactor, corresponding cladding and corresponding control cluster

#137
20140247915
2014-09-04

METHOD FOR PRODUCING A WEAR-RESISTANT AND CORROSION-RESISTANT STAINLESS STEEL PART FOR A NUCLEAR REACTOR, CORRESPONDING PART AND CORRESPONDING CONTROL CLUSTER

#138
20140246126
2014-09-04

Method for producing steel component

#139
20140238549
2014-08-28

Method for Low-Pressure Carbonitriding Having an Extended Temperature Range in an Initial Nitridation Phase

#140
20140209214
2014-07-31

Method and steel component

#141
20140166160
2014-06-19

Surface treatment of a metal part

#142
20140099051
2014-04-10

ROLLING SLIDING MEMBER, METHOD OF MANUFACTURING THE SAME, AND ROLLING BEARING

#143
20140060983
2014-03-06

Vehicular disc brake rotor and manufacturing method of vehicular disc brake rotor

#144
20140060704
2014-03-06

Manufacturing method of cast-iron friction member

#145
20140048180
2014-02-20

Method for solution hardening of a cold deformed workpiece of a passive alloy, and a member solution hardened by the method

#146
20140048179
2014-02-20

Manufacturing method of machine component

#147
20140041763
2014-02-13

Gas nitrocarburizing method and method for manufacturing bearing part

#148
20140030137
2014-01-30

Steel for carburizing or carbonitriding use

#149
20130304178
2013-11-14

Implant and method for manufacturing same

#150
20130297006
2013-11-07

Implant with increased carbon content at near-surface boundary layer

#151
20130273393
2013-10-17

Steel for cold forging/nitriding, steel material for cold forging/nitriding, and cold-forged/nitrided component

#152
20130220489
2013-08-29

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

#153
20130220263
2013-08-29

Valve system for controlling the charge exchange

#154
20130203539
2013-08-08

Link chain with link plates made of boron-manganese steel

#155
20130146181
2013-06-13

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

#156
20130146180
2013-06-13

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

#157
20130042992
2013-02-21

METHOD FOR SURFACE TREATMENT OF A DIE-CASTING DIE

#158
20130042947
2013-02-21

Low pressure carbonitriding method and device

#159
20130037173
2013-02-14

Method for carbonitriding at least one component in a treatment chamber

#160
20130019666
2013-01-24

Bearing part, bearing, and method for inspecting bearing part

#161
20130008566
2013-01-10

Spring and method for producing same

#162
20130008565
2013-01-10

Method and apparatus for heat treating a metal

#163
20130000788
2013-01-03

Method for manufacturing base material for wave gear

#164
20120318407
2012-12-20

Spring steel and surface treatment method for steel material

#165
20120298262
2012-11-29

High strength steel and high strength bolt excellent in delayed fracture resistance and methods of production of same

#166
20120255652
2012-10-11

Method for improving surface mechanical properties of non-austenitic stainless steels

#167
20120227867
2012-09-13

Turbocharger housing with a conversion coating and methods of making the conversion coating

#168
20120219409
2012-08-30

Pump used in gasification system

#169
20120211122
2012-08-23

Method for producing carbonitrided member

#170
20120111456
2012-05-10

Method of activating an article of passive ferrous or non-ferrous metal prior to carburising, nitriding and /or nitrocarburising

#171
20120051682
2012-03-01

BEARING PART, HEAT TREATMENT METHOD THEREOF, AND ROLLING BEARING

#172
20120048427
2012-03-01

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

#173
20120020605
2012-01-26

Bearing component, rolling bearing, and method for producing bearing component

#174
20120018063
2012-01-26

CASE-HARDENED STEEL SUPERIORIN COLD WORKABILITY, MACHINABILITY, AND FATIGUE CHARACTERISTICS AFTER CARBURIZED QUENCHING AND METHOD OF PRODUCTION OF SAME

#175
20120018050
2012-01-26

Surface layer-hardened steel part and method of manufacturing the same

#176
20110315275
2011-12-29

Method of treating parts for kitchen utensils

#177
20110284133
2011-11-24

CARBONITRIDED PART AND PROCESS FOR PRODUCING CARBONITRIDED PART

#178
20110272637
2011-11-10

Method for producing a gaseous atmosphere for treating metals

#179
20110243488
2011-10-06

Bearing constituent member and process for producing the same, and rolling bearing having bearing constituent member

#180
20110186186
2011-08-04

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

#181
20110132138
2011-06-09

Nitrocarburized crankshaft member and steel for nitrocarburized crankshafts

#182
20110079326
2011-04-07

METHOD TO INCREASE CORROSION RESISTANCE IN FERRITIC NITROCARBURIZED TREATED CAST IRON SUBSTRATES

#183
20110077732
2011-03-31

Implant and method for manufacturing same

#184
20110041959
2011-02-24

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

#185
20110036462
2011-02-17

Low pressure carbonitriding method and device

#186
20110000583
2011-01-06

Rolling part and manufacturing method thereof

#187
20100263765
2010-10-21

Cylinder jacket and method for producing the same

#188
20100154938
2010-06-24

Layered fe-based alloy and process for production thereof

#189
20100154937
2010-06-24

Carbonitriding method, machinery component fabrication method, and machinery component

#190
20100150489
2010-06-17

Rolling member, rolling bearing and process for manufacturing rolling member

#191
20100139811
2010-06-10

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

#192
20100139451
2010-06-10

Manufacturing method for a crankshaft member

#193
20100037991
2010-02-18

DIFFUSION PROMOTERS FOR LOW TEMPERATURE CASE HARDENING

#194
20090304543
2009-12-10

Steel for nitrocarburizing use, steel product for nitrocarburizing use and crankshaft

#195
20090304500
2009-12-10

Turbocharger housing with a conversion coating and methods of making the conversion coating

#196
20090276992
2009-11-12

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

#197
20090223275
2009-09-10

Hot forming tools for aluminum and magnesium sheets

#198
20090165896
2009-07-02

Carbonitriding method, machinery component fabrication method, and machinery component

#199
20090145263
2009-06-11

Engine starter

#200
20090120272
2009-05-14

Safety Armor for Protection Against Gunfire and Process for Producing it

#201
20090101240
2009-04-23

Carbonitriding method, machinery component fabrication method, and machinery component

#202
20090038713
2009-02-12

Rolling apparatus

#203
20080277031
2008-11-13

Surface-carbonitrided stainless steel part excellent in wear resistance and its manufacturing method

#204
20080149226
2008-06-26

Method of optimizing an oxygen free heat treating process

#205
20080047632
2008-02-28

Method for Thermally Treating a Component Consisting of a Fully Hardenable, Heat-Resistant Steel and a Component Consisting of Said Steel

#206
20070196039
2007-08-23

Ball bearing for pinion shaft

#207
20070151633
2007-07-05

Rolling bearing

#208
20070144619
2007-06-28

Nitrocarburized microalloyed steel member

#209
20070110610
2007-05-17

Hot work tool steel and mold member excellent resistance to melting loss

#210
20070069576
2007-03-29

Valve and manufacturing method thereof

#211
20070062620
2007-03-22

Fixing element comprising a low-alloyed steel and process for the production thereof

#212
20070047862
2007-03-01

Drawn cup needle roller bearing

#213
20070034301
2007-02-15

Rolling-contact shaft with joint claw

#214
20060225814
2006-10-12

Crankshaft and method for manufacturing same

#215
20060204155
2006-09-14

Rolling bearing

#216
20060185768
2006-08-24

Fixing element comprising a low-alloyed steel and process for the production thereof

#217
20060137766
2006-06-29

Case-hardening steel superior in tooth surface fatigue strength, gear using the same, and method of production of the same

#218
20060090817
2006-05-04

Case-hardening of stainless steel

#219
20060048863
2006-03-09

Carbonitrided low manganese carbon steel alloy driveline component

#220
20060048861
2006-03-09

Surface-carbonitrided stainless steel part excellent in wear resistance and method for their manufacture

#221
20060048856
2006-03-09

Carbonitriding low manganese medium carbon steel

#222
20060021679
2006-02-02

Rolling element and method of producing the same

#223
20050274215
2005-12-15

Worm gear assembly having improved physical properties and method of making same

#224
20050268990
2005-12-08

Carbo-nitrided case hardened martensitic stainless steels

#225
20050205168
2005-09-22

Crankshaft

#226
20050205163
2005-09-22

Bearing part, heat treatment method thereof, and rolling bearing

#227
20050092396
2005-05-05

Rolling bearing for belt driven continuously variable transmission

#228
20050061402
2005-03-24

Method for producing gears and/or shaft components with superior bending fatigue strength and pitting fatigue life from conventional alloy steels

#229
20050045247
2005-03-03

Bearing's component, heat treatment method thereof, heat treatment apparatus, and rolling bearing

#230
20050006006
2005-01-13

High temperature alloy particularly suitable for a long-life turbocharger nozzle ring