ClassID:

119933

C23C8/38 - 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 using ionised gases, e.g. ionitriding Treatment of ferrous surfaces

Recent Application in this class:
#1
20250367734
2025-12-04

CUTTING TOOL INSERT

#2
20240359276
2024-10-31

METHOD OF MANUFACTURING PLANETARY GEAR CARRIER

#3
20240271239
2024-08-15

PROCESS FOR OBTAINING A FINE-GRAINED MARTENSITIC STRUCTURE COMPONENT

#4
20240071726
2024-02-29

METHOD FOR PLASMA-ASSISTED AND MULTI-STEP CONTINUOUS PREPARATION OF DIFFUSION LAYER/AMORPHOUS CARBON FILM COMPOSITE COATING AND USE THEREOF

#5
20220390000
2022-12-08

Method for producing a sintered component with a toothing

#6
20220220999
2022-07-14

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

#7
20220042158
2022-02-10

Nitriding process for carburizing ferrium steels

#8
20200283883
2020-09-10

Method of treating the surfaces of mould parts for casting moulds consisting of a steel material

#9
20200173009
2020-06-04

Method for manufacturing filled container, and filled container

#10
20190355997
2019-11-21

Method and device for producing fuel cell separator

#11
20190211435
2019-07-11

Ferritic nitrocarburized part and methods of making and using the same

#12
20190203331
2019-07-04

Method for manufacturing ferritic stainless steel product

#13
20190194793
2019-06-27

Nitriding process for carburizing Ferrium steels

#14
20190143644
2019-05-16

Multilayer structure and machine component having multilayer structure

#15
20190136362
2019-05-09

Coating system for tubular gripping components

#16
20190119773
2019-04-25

Method for nitriding grain-oriented electrical steel sheet

#17
20190100827
2019-04-04

Nitriding of niobium steel and product made thereby

#18
20180355464
2018-12-13

Steel Article Having Improved Contact Fatigue Resistance

#19
20180223411
2018-08-09

Rapid Nitriding Through Nitriding Potential Control

#20
20180209541
2018-07-26

Piston ring and its production method

#21
20180198352
2018-07-12

Method of forming a rotor

#22
20180154449
2018-06-07

Method for producing a swashplate

#23
20170327956
2017-11-16

Method and system for die compensation and restoration using high-velocity oxy-fuel thermal spray coating and plasma ion nitriding

#24
20170211171
2017-07-27

Coating system for tubular gripping components

#25
20170129117
2017-05-11

Strengthened razor blade

#26
20170107588
2017-04-20

Composition design and processing methods of high strength, high ductility, and high corrosion resistance FeMnA1C alloys

#27
20170082194
2017-03-23

Plunger with ion nitriding treatment for a hydraulic fracturing pump and a method for making said plunger

#28
20170009314
2017-01-12

Piston ring and its production method

#29
20170002453
2017-01-05

Galling and corrosion resistant inner diameter surface in aluminum caster roll shell steels

#30
20160121028
2016-05-05

Manufacturing method of iron-based alloy medical apparatus

#31
20150361544
2015-12-17

Apparatus and method for nitriding grain-oriented electrical steel sheet

#32
20150354051
2015-12-10

APPARATUS AND METHOD FOR NITRIDING GRAIN-ORIENTED ELECTRICAL STEEL SHEET

#33
20150332820
2015-11-19

Composite magnetic member and method of manufacturing same

#34
20150211621
2015-07-30

SINTERED COMPONENT

#35
20150211104
2015-07-30

Steel article having improved contact fatigue resistance and a method of making

#36
20150159710
2015-06-11

Friction material and methods of making and using the same

#37
20150151027
2015-06-04

Bioabsorbable medical device or medical device component and preparation method thereof

#38
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

#39
20150096423
2015-04-09

Edged tool, method of manufacturing the same, and plasma device for manufacturing the same

#40
20150027591
2015-01-29

Steel material for nitriding and nitrided component

#41
20140352943
2014-12-04

Coating system for tubular gripping components

#42
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

#43
20140283954
2014-09-25

BAINITIC MICROALLOY STEEL WITH ENHANCED NITRIDING CHARACTERISTICS

#44
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

#45
20140251501
2014-09-11

Method and system for die compensation and restoration using high-velocity oxy-fuel thermal spray coating and plasma ion nitriding

#46
20140179117
2014-06-26

Method for forming a layer on a substrate at low temperatures

#47
20140166160
2014-06-19

Surface treatment of a metal part

#48
20140086783
2014-03-27

Process for manufacturing a reinforced alloy by plasma nitriding

#49
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

#50
20130335071
2013-12-19

Method of scale substrate manufacture

#51
20130284318
2013-10-31

Plasma nitriding surface treatment method for gray cast iron part

#52
20130081740
2013-04-04

Composition design and processing methods of high strength, high ductility, and high corrosion resistance FeMnAlC alloys

#53
20130049304
2013-02-28

Nitrided piston ring resistant to the propagation of cracks

#54
20130042992
2013-02-21

METHOD FOR SURFACE TREATMENT OF A DIE-CASTING DIE

#55
20130008565
2013-01-10

Method and apparatus for heat treating a metal

#56
20120227867
2012-09-13

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

#57
20120219409
2012-08-30

Pump used in gasification system

#58
20120186703
2012-07-26

NITRIDING OF NIOBIUM STEEL AND PRODUCT MADE THEREBY

#59
20120118434
2012-05-17

STEEL MEMBER HAVING NITROGEN COMPOUND LAYER AND PROCESS FOR PRODUCING SAME

#60
20120079862
2012-04-05

Boronized laying pipe

#61
20120052315
2012-03-01

MECHANICAL PARTS HAVING INCREASED WEAR-RESISTANCE

#62
20120014635
2012-01-19

Mechanical component and rolling bearing

#63
20110308084
2011-12-22

METHOD FOR MANUFACTURING HEAT RESISTING MEMBER APPLICABLE TO AN EXHAUST GAS GUIDE ASSEMBLY WITH IMPROVED HEAT RESISTANCE FOR VGS TURBOCHARGER

#64
20110277886
2011-11-17

NITRIDING OF NIOBIUM STEEL AND PRODUCT MADE THEREBY

#65
20110236592
2011-09-29

METHOD FOR TREATING A METAL ELEMENT WITH ION BEAM

#66
20110120596
2011-05-26

Manufacturing process of a structural component for a motor vehicle, plate bar for hot forming and structural component

#67
20110061770
2011-03-17

Method for ordering a disordered alloy and method for making a perpendicular magnetic recording medium

#68
20100323803
2010-12-23

Constant velocity universal joint component and manufacturing method thereof

#69
20100299931
2010-12-02

Strengthened razor blade

#70
20100239205
2010-09-23

Mechanical component and rolling bearing

#71
20100163534
2010-07-01

ATMOSPHERIC-PLASMA PROCESSING METHOD FOR PROCESSING MATERIALS

#72
20100139099
2010-06-10

Cutting element, electric shaver provided with a cutting element

#73
20100081292
2010-04-01

Gas treatment method and computer readable storage medium

#74
20100058592
2010-03-11

Method for hardening running surfaces of roller bearing components

#75
20090314389
2009-12-24

Ion Nitriding Method

#76
20090304500
2009-12-10

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

#77
20090145523
2009-06-11

Method for manufacturing heat resisting member applicable to an exhaust gas guide assembly with improved heat resistance for VGS turbocharger

#78
20080277030
2008-11-13

Composition and Process for Enhanced Properties of Ferrous Components

#79
20080233428
2008-09-25

Mechanical parts having increased wear-resistance

#80
20080220236
2008-09-11

Soft magnetic materials

#81
20080129208
2008-06-05

Atmospheric Processing Using Microwave-Generated Plasmas

#82
20080076001
2008-03-27

TRANSITION METAL NITRIDE, FUEL CELL SEPARATOR, METHOD FOR PRODUCING TRANSITION METAL NITRIDE, METHOD FOR PRODUCING FUEL CELL SEPARATOR, FUEL CELL STACK AND FUEL CELL VEHICLE

#83
20080050635
2008-02-28

Separator for fuel cell with austenitic stainless steel substrate

#84
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

#85
20080023109
2008-01-31

MICROWAVE CARBURIZING FURNACE AND CARBURIZING METHOD

#86
20070295427
2007-12-27

Treated austenitic steel for vehicles

#87
20070277911
2007-12-06

Surface modifying jig of engine valve and surface modifying method employing it

#88
20070110610
2007-05-17

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

#89
20070098977
2007-05-03

Soft magnetic materials and methods of making

#90
20070098917
2007-05-03

Plasma boriding method

#91
20070031639
2007-02-08

Articles having low wettability and methods for making

#92
20060204818
2006-09-14

Transition metal nitride and fuel cell applications

#93
20060201001
2006-09-14

Coated cutting member having a nitride hardened substrate

#94
20060192347
2006-08-31

Nitrided material for MLS active layers

#95
20060104850
2006-05-18

Ultra-low carbon stainless steel

#96
20060019040
2006-01-26

Hydrogen diffusion barrier on steel by means of a pulsed-plasma ion-nitriding process

#97
20050241159
2005-11-03

Wear-resistant stainless cutting element of an electric shaver, electric shaver, and method of producing such a cutting element

#98
20050236070
2005-10-27

Plasma-nitriding of maraging steel, shaver cap for an electric shaver, cutting device made out of such steel and an electric shaver