ClassID:

118922

C21D1/20 - CPC Classification

Classification description:

General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering; Hardening ; Quenching with or without subsequent tempering by interrupted quenching Isothermal quenching, e.g. bainitic hardening

Recent Application in this class:
#1
20250340961
2025-11-06

FIRMWARE-BASED OUT-OF-ORDER COMMAND SCHEDULER

#2
20250257420
2025-08-14

FIRMWARE-BASED OUT-OF-ORDER COMMAND SCHEDULER

#3
20250250649
2025-08-07

BAINITIC WELDING AND COMPONENT

#4
20250003020
2025-01-02

FIRMWARE-BASED OUT-OF-ORDER COMMAND SCHEDULER

#5
20240318690
2024-09-26

COMPONENT FOR A ROLLING BEARING AND CORRESPONDING METHOD FOR PRODUCING THE COMPONENT

#6
20240279762
2024-08-22

METHOD FOR PRODUCING A ROLLING ELEMENT BEARING COMPONENT, ROLLING ELEMENT BEARING COMPONENT, AND ROLLING ELEMENT BEARING

#7
20240263265
2024-08-08

HIGH STRENGTH STEEL PRODUCTS AND ANNEALING PROCESSES FOR MAKING THE SAME

#8
20240254610
2024-08-01

Hot-Formed Steel Part and Manufacturing Method

#9
20240183010
2024-06-06

WIREDRAWN PRODUCT AND METHOD FOR MANUFACTURING WIREDRAWN PRODUCT

#10
20240124950
2024-04-18

METHOD FOR HEAT TREATING A STEEL COMPONENT

#11
20240093321
2024-03-21

METHODS AND SYSTEMS FOR VACUUM AND OIL AUSTEMPERING IN PRODUCING BAINITE

#12
20240002994
2024-01-04

MODIFIED HOT-DIP GALVANIZE COATINGS WITH LOW LIQUIDUS TEMPERATURE, METHODS OF MAKING AND USING THE SAME

#13
20230416858
2023-12-28

TRACK PART AND METHOD FOR PRODUCING A TRACK PART

#14
20230257846
2023-08-17

Cold rolled, coated and post batch annealed steel sheet

#15
20230136145
2023-05-04

METHOD FOR PRODUCING A SCREW, AND SCREW

#16
20220064745
2022-03-03

High-strength structural steel having excellent cold bendability, and manufacturing method therefor

#17
20220010395
2022-01-13

HIGH SURFACE COMPRESSIVE STRESS FOR THROUGH HARDENING

#18
20220002832
2022-01-06

Production method for high-strength steel sheet

#19
20210404028
2021-12-30

HIGH STRENGTH AND TOUGHNESS LOW CARBON NANOSTRUCTURED BAINITIC STEEL AND PREPARATION METHOD THEREOF

#20
20210355559
2021-11-18

Steel sheet and method for producing the same

#21
20210180172
2021-06-17

MODIFIED HOT-DIP GALVANIZE COATINGS WITH LOW LIQUIDUS TEMPERATURE, METHODS OF MAKING AND USING THE SAME

#22
20210123114
2021-04-29

Method for forming a cold rolled, coated and post batch annealed steel sheet

#23
20210102283
2021-04-08

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

#24
20210054476
2021-02-25

Automotive steel and a method for the fabrication of the same

#25
20210002747
2021-01-07

Component for contacting hydrogen

#26
20200291496
2020-09-17

Extremely high conductivity low cost steel

#27
20200199703
2020-06-25

TRACK PART AND METHOD FOR PRODUCING A TRACK PART

#28
20200095651
2020-03-26

HIGH-STRENGTH COLD-ROLLED STEEL SHEET, HIGH-STRENGTH HOT-DIP GALVANIZED STEEL SHEET, AND HIGH-STRENGTH HOT-DIP GALVANNEALED STEEL SHEET EXCELLENT IN FORMABILITY AND SHAPE FIXABILITY, AND METHODS FOR MANUFACTURING THEM

#29
20200071789
2020-03-05

HIGH STRENGTH STEEL SHEET HAVING EXCELLENT DUCTILITY AND STRETCH FLANGEABILITY

#30
20200040422
2020-02-06

High strength annealed steel products and annealing processes for making the same

#31
20200032367
2020-01-30

Cold rolled steel wire, method and reinforcement of flexible conduits

#32
20190390291
2019-12-26

ANNEALING PROCESSES FOR MAKING HIGH STRENGTH STEEL PRODUCTS

#33
20190382859
2019-12-19

HEAT TREATMENT METHOD FOR ACCELERATING PRECIPITATION OF NANOSCALE CARBIDES IN W-CONTAINING ALLOY STEEL

#34
20190338388
2019-11-07

Tempered and coated steel sheet having excellent formability and a method of manufacturing the same

#35
20190241988
2019-08-08

HOT-PRESSING STEEL PLATE, PRESS-MOLDED ARTICLE, AND METHOD FOR MANUFACTURING PRESS-MOLDED ARTICLE

#36
20190226067
2019-07-25

High-strength steel sheet and production method therefor

#37
20190194771
2019-06-27

Self-lubricating rolling bearing and preparation method therefor

#38
20190161838
2019-05-30

HIGH-STRENGTH BAINITIC STEEL

#39
20190062864
2019-02-28

High strength annealed steel products

#40
20190054513
2019-02-21

Method for producing a motor vehicle component with at least two regions of different strengths

#41
20180327874
2018-11-15

GAS QUENCHING METHOD

#42
20180327873
2018-11-15

Engineering Steel with a Bainitic Structure, Forged Parts Produced Therefrom and Method for Producing a Forged Part

#43
20180320257
2018-11-08

Thick steel plate for structural pipes or tubes, method of producing thick steel plate for structural pipes or tubes, and structural pipes and tubes

#44
20180265943
2018-09-20

Plated steel plate and manufacturing method thereof

#45
20180258504
2018-09-13

METHOD OF PRODUCING A TOOL STEEL

#46
20180223402
2018-08-09

Rolling element bearing having bainite microstructure

#47
20180105905
2018-04-19

BAINITIC STEEL FOR ROCK DRILLING COMPONENT

#48
20180044750
2018-02-15

Post Annealed High Tensile Strength Coated Steel Sheet having Improved Yield Strength and Hole Expansion

#49
20170349960
2017-12-07

High-strength high-tenacity steel plate with tensile strength of 800 MPa and production method therefor

#50
20170342521
2017-11-30

Alloy steel composition and producing method thereof

#51
20170327924
2017-11-16

High strength steel products and annealing processes for making the same

#52
20170283899
2017-10-05

CARBURIZING AUSTEMPERING PROCESS

#53
20170268077
2017-09-21

HIGH-STRENGTH HIGH-DUCTILITY STEEL SHEET

#54
20170233841
2017-08-17

Material, method and component

#55
20170198381
2017-07-13

Ferrous alloy

#56
20170183758
2017-06-29

Austempering Of Structural Components

#57
20170096719
2017-04-06

EXTREMELY HIGH CONDUCTIVITY LOW COST STEEL

#58
20170051378
2017-02-23

High-strength cold rolled steel sheet having excellent ductility, hot-dip galvanized steel sheet and method for manufacturing same

#59
20170044643
2017-02-16

METHOD AND APPARATUS FOR PRODUCING A STEEL STRIP

#60
20170009316
2017-01-12

High-strength hot-rolled steel sheet and method for manufacturing the same

#61
20160369369
2016-12-22

High-strength cold-rolled steel sheet and method for manufacturing the same (as amended)

#62
20160319392
2016-11-03

Cold rolled steel wire, method and reinforcement of flexible conduits

#63
20160258032
2016-09-08

High-strength hot-rolled steel sheet and method for producing the same

#64
20160251744
2016-09-01

Bearing steel

#65
20160222485
2016-08-04

HOT-PRESSING STEEL PLATE, PRESS-MOLDED ARTICLE, AND METHOD FOR MANUFACTURING PRESS-MOLDED ARTICLE

#66
20160222483
2016-08-04

METHOD FOR MANUFACTURING PRESS-MOLDED ARTICLE, AND PRESS-MOLDED ARTICLE

#67
20160222482
2016-08-04

HOT-PRESSING STEEL PLATE, PRESS-MOLDED ARTICLE, AND METHOD FOR MANUFACTURING PRESS-MOLDED ARTICLE

#68
20160032430
2016-02-04

Development of nanostructure austempered ductile iron with dual phase microstructure

#69
20150376730
2015-12-31

Hot-rolled steel sheet

#70
20150361535
2015-12-17

Process for manufacturing a profiled steel wire

#71
20150361533
2015-12-17

Hypoeutectoid bearing steel

#72
20150218688
2015-08-06

Method and steel component

#73
20150203945
2015-07-23

Thick-walled, high tensile strength steel with excellent CTOD characteristics of the weld heat-affected zone, and manufacturing method thereof

#74
20150167133
2015-06-18

High strength cold rolled steel sheet

#75
20150140358
2015-05-21

Hot-dip galvannealed hot-rolled steel sheet and process for producing same

#76
20150114720
2015-04-30

Inhibition of Microfissure Formation in Wear Resistant Coatings

#77
20150114527
2015-04-30

Steel for oil country tubular goods and method of producing the same

#78
20150114199
2015-04-30

Methods of thermo-mechanically processing tool steel and tools made from thermo-mechanically processed tool steels

#79
20150107727
2015-04-23

Method and system for thermal treatments of rails

#80
20150101712
2015-04-16

Method for manufacturing high-strength cold-rolled steel sheet with outstanding workability

#81
20150098857
2015-04-09

Steel material

#82
20150075680
2015-03-19

Steel sheet suitable for impact absorbing member and method for its manufacture

#83
20150041024
2015-02-12

Ultrahigh-strength multiphase steel with improved properties during production and processing

#84
20150034218
2015-02-05

High strength cold rolled steel sheet

#85
20150023623
2015-01-22

Bearing component

#86
20140305553
2014-10-16

High-strength cold-rolled steel sheet having small variations in strength and ductility and manufacturing method for the same

#87
20140251513
2014-09-11

High-strength hot rolled steel sheet with excellent bendability and low-temperature toughness, and method for manufacturing the same

#88
20140216124
2014-08-07

Method for producing a motor vehicle axle component

#89
20140209214
2014-07-31

Method and steel component

#90
20140170439
2014-06-19

Steel sheet with high mechanical strength, ductility and formability properties, production method and use of such sheets

#91
20140166166
2014-06-19

Method for producing hot-formed and press-hardened automobile column

#92
20140102600
2014-04-17

Bainitic steel of high strength and high elongation and method to manufacture said bainitic steel

#93
20140056754
2014-02-27

Hot press-formed product and process for producing same

#94
20130186529
2013-07-25

Steel part for machine structural use and manufacturing method thereof

#95
20130186528
2013-07-25

Steel part for machine structural use and manufacturing method thereof

#96
20130186521
2013-07-25

Profiled steel wire with high mechanical characteristics resistant to hydrogen embrittlement

#97
20130167986
2013-07-04

Steel part for machine structural use and manufacturing method thereof

#98
20130167984
2013-07-04

Method of making an austempered ductile iron article

#99
20130129446
2013-05-23

Ultra high strength screw having a high yield ratio

#100
20130118656
2013-05-16

Methods of forming and austempering a ductile iron article and article made thereby

#101
20130081741
2013-04-04

Method of achieving trip microstructure in steels by means of deformation heat

#102
20130022490
2013-01-24

High-strength steel sheet with excellent warm workability

#103
20130008567
2013-01-10

Heat treatment method

#104
20130000793
2013-01-03

Welded steel pipe for linepipe having high compressive strength and excellent sour gas resistance and manufacturing method thereof

#105
20130000788
2013-01-03

Method for manufacturing base material for wave gear

#106
20120318415
2012-12-20

SIDE RAIL AND METHOD FOR PRODUCING A HOT-FORMED AND PRESS-HARDENED SIDE RAIL

#107
20120312433
2012-12-13

High-strength steel sheet excellent in workability and cold brittleness resistance, and manufacturing method thereof

#108
20120152413
2012-06-21

METHOD OF PRODUCING LARGE COMPONENTS FROM AUSTEMPERED DUCTILE IRON ALLOYS

#109
20120125492
2012-05-24

Ultratough high-strength weldable plate steel and its method of manufacturing thereof

#110
20120091758
2012-04-19

AUTOMOBILE COLUMN AND METHOD FOR PRODUCING A HOT-FORMED AND PRESS-HARDENED AUTOMOBILE COLUMN

#111
20120090741
2012-04-19

Method for producing a hot-formed and press-hardened metal component

#112
20120070687
2012-03-22

High-strength Zn—Al coated steel wire for bridges with excellent corrosion resistance and fatigue properties and method for manufacturing the same

#113
20120018062
2012-01-26

Method of hot-rolled thin steel sheet with excellent formability and excellent strength and toughness after heat treatment

#114
20110311334
2011-12-22

Blind fastener and production method thereof

#115
20110271733
2011-11-10

Method for manufacturing high strength hot rolled steel sheet

#116
20110254243
2011-10-20

Hardening of flexible trailing arms

#117
20110209803
2011-09-01

High-strength steel machined product and method for manufacturing the same, and method for manufacturing diesel engine fuel injection pipe and common rail

#118
20110198786
2011-08-18

Method and device for the continuous creation of a bainite structure in a carbon steel, particularly in a strip steel

#119
20110162762
2011-07-07

HIGH STRENGTH STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME

#120
20110132502
2011-06-09

Method for producing a formed steel part having a predominantly ferritic-bainitic structure

#121
20110126946
2011-06-02

Bainite steel and methods of manufacture thereof

#122
20110097234
2011-04-28

Lean duplex stainless steel excellent in corrosion resistance and toughness of weld heat affected zone

#123
20110070088
2011-03-24

Steam turbine rotor and alloy therefor

#124
20100314010
2010-12-16

High-strength hot-rolled steel sheet and method for manufacturing same

#125
20100307641
2010-12-09

High carbon steel sheet superior in tensile strength and elongation and method for manufacturing the same

#126
20100296764
2010-11-25

Method of heat treating a steel bearing component

#127
20100247368
2010-09-30

ALLOY AND A METHOD OF MAKING AN ALLOY

#128
20100001442
2010-01-07

Method and installation for the dry transformation of a material structure of semifinished products

#129
20090320971
2009-12-31

Method for manufacturing spheroidal cast iron mechanical components

#130
20090314396
2009-12-24

Method for efficient heat treatment of steel

#131
20090242085
2009-10-01

Dual phase steel sheet with good bake-hardening properties

#132
20090238713
2009-09-24

Ultrahigh-strength thin steel sheet

#133
20090229417
2009-09-17

Methods of thermo-mechanically processing tool steel and tools made from thermo-mechanically processed tool steels

#134
20090218738
2009-09-03

Installation for the dry transformation of a material microstructure of semi-finished products

#135
20090214377
2009-08-27

Method for Producing Hot Rolled Strip with a Multiphase Microstructure

#136
20090205756
2009-08-20

Hot-rolled thin steel sheet with excellent formability and excellent strength and toughness after heat treatment, and method for manufacturing the same

#137
20090139616
2009-06-04

Method and device for the continuous creation of a bainite structure in a carbon steel, particularly in a strip steel

#138
20090065104
2009-03-12

Method of producing a cold-rolled strip with a ferritic structure

#139
20080271824
2008-11-06

Spring Steel Wire

#140
20080257460
2008-10-23

Method of producing forgings having excellent tensile strength and elongation from steel wire rods

#141
20080197546
2008-08-21

Metal heat treatment system hot-gas quenching apparatus and hot-gas heat treatment system

#142
20070289678
2007-12-20

Device for cooling long objects

#143
20070251609
2007-11-01

Ultratough high-strength weldable plate steel and method of manufacture thereof

#144
20070246135
2007-10-25

Method of Manufacturing a Hardened Forged Steel Component

#145
20070224041
2007-09-27

Turbine casing

#146
20070143997
2007-06-28

Crankshaft comprising a combined gear wheel and method for the production and use of said crankshaft

#147
20060157160
2006-07-20

Machinable austempered cast iron article having improved machinability, fatigue performance, and resistance to environmental cracking

#148
20060086442
2006-04-27

Hot gas quenching devices, and hot gas heat treating system

#149
20060065334
2006-03-30

High carbon steel wire with bainitic structure for spring and other cold-formed applications

#150
20060021682
2006-02-02

Ultratough high-strength weldable plate steel

#151
20060011274
2006-01-19

Method for producing steel with retained austenite

#152
20050161134
2005-07-28

High strength and low yield ratio cold rolled steel sheet and method of manufacturing the same

#153
20050150580
2005-07-14

Ultra-high strength steel sheet having excellent hydrogen embrittlement resistance, and method for manufacturing the same

#154
20050133120
2005-06-23

Carbide method and article for hard finishing resulting in improved wear resistance

#155
20050081966
2005-04-21

High tensile strength steel sheet excellent in processibility and process for manufacturing the same

#156
20050063852
2005-03-24

Screw compressor and method of manufacturing rotor for the same