ClassID:

118958

C21D1/773 - CPC Classification

Classification description:

General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering; Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum

Recent Application in this class:
#1
20250153235
2025-05-15

APPARATUS AND METHOD FOR PREPARING HOT STAMPED PART

#2
20240271239
2024-08-15

PROCESS FOR OBTAINING A FINE-GRAINED MARTENSITIC STRUCTURE COMPONENT

#3
20240102124
2024-03-28

High-resistance steel strip comprising a temperature homogenisation chamber

#4
20240011135
2024-01-11

HOT WORK TOOL STEEL

#5
20230407424
2023-12-21

VACUUM HEAT TREATMENT APPARATUS

#6
20230392222
2023-12-07

METHOD FOR MANUFACTURING STAINLESS STEEL SINTERED MESH

#7
20230383788
2023-11-30

BEARING ASSEMBLY

#8
20230250500
2023-08-10

Device and Method for Water Spray Quenching

#9
20230175089
2023-06-08

Procedure for hardening slides of a perforating press and the slides obtained

#10
20230078751
2023-03-16

VOLUME HEAT TREATMENT METHOD AND RELATED SYSTEM

#11
20220018394
2022-01-20

Bearing assembly

#12
20210404033
2021-12-30

Device and method for continuous temperature gradient heat treatment of rod-shaped material

#13
20210332451
2021-10-28

Vacuum solid solution method for nickel-free high manganese and nitrogen stainless steel

#14
20210189530
2021-06-24

PLASTIC SINGLE-AXIS ZERO-EXPANSION COMPOSITE MATERIAL AND PREPARATION METHOD THEREOF

#15
20210142944
2021-05-13

Device and method for continuously performing grain boundary diffusion and heat treatment

#16
20210142943
2021-05-13

Continous heat treatment device and method for alloy workpiece or metal workpiece

#17
20200385831
2020-12-10

A PROCESS FOR REFINING A NITROGEN-CONTAINING METAL ALLOY

#18
20200318777
2020-10-08

Decompression heat-insulating pipe structure

#19
20200232063
2020-07-23

METHOD AND FURNACE FOR THERMALLY TREATING A HIGH-RESISTANCE STEEL STRIP COMPRISING A TEMPERATURE HOMOGENISATION CHAMBER

#20
20200080594
2020-03-12

Rolling slide member, rolling bearing using same, and method for manufacturing rolling slide member

#21
20190382859
2019-12-19

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

#22
20190316217
2019-10-17

Vacuum heat treatment apparatus

#23
20190276913
2019-09-12

Method of continuously annealing a strip

#24
20190249718
2019-08-15

Rolling slide member, rolling bearing using same, and method for manufacturing rolling slide member

#25
20190226074
2019-07-25

Concurrent flow of activating gas in low temperature carburization

#26
20190127836
2019-05-02

Heat treatment facility

#27
20190119769
2019-04-25

GAS DELIVERY SYSTEM FOR HIGH PRESSURE PROCESSING CHAMBER

#28
20190017131
2019-01-17

Gas delivery system for high pressure processing chamber

#29
20180347003
2018-12-06

Methods for producing titanium and titanium alloy articles

#30
20180224053
2018-08-09

Decompression heat-insulating pipe structure

#31
20180187284
2018-07-05

High-pressure liquid-state or supercritical-state quenching apparatus

#32
20180051351
2018-02-22

Aluminum foil annealing furnace

#33
20180016652
2018-01-18

Heat treatment apparatus

#34
20180010854
2018-01-11

Heat treatment device

#35
20170301442
2017-10-19

Soft magnetic flattened powder and method for producing the same

#36
20170288478
2017-10-05

Stator Magnetic Core Brushless Motor Apparatus, System and Methods

#37
20170254592
2017-09-07

THERMAL TREATMENT DEVICE

#38
20170175237
2017-06-22

Ferritic stainless steel and method for producing same, and heat exchanger equipped with ferritic stainless steel as member

#39
20170130317
2017-05-11

Concurrent flow of activating gas in low temperature carburization

#40
20170117094
2017-04-27

Method for manufacturing R-T-B based sintered magnet

#41
20170069819
2017-03-09

Hydrogen free amorphous silicon as insulating dielectric material for superconducting quantum bits

#42
20170037592
2017-02-09

Integrally cast excavator bucket and manufacturing method thereof

#43
20170033618
2017-02-02

Stator magnetic core brushless motor apparatus, system and methods

#44
20170023304
2017-01-26

Conveyance device for heat treatment device and heat treatment device

#45
20160362765
2016-12-15

Heat chamber furnace for heat treatment with gaseous atmosphere quenching

#46
20160355903
2016-12-08

Apparatus for continuous annealing of strip and method for continuous annealing of same

#47
20160348969
2016-12-01

HEAT TREATMENT DEVICE

#48
20160305007
2016-10-20

METHOD OF MANUFACTURING FERROUS METAL COMPONENT

#49
20160289812
2016-10-06

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

#50
20160230239
2016-08-11

Methods for producing titanium and titanium alloy articles

#51
20160223259
2016-08-04

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

#52
20160201156
2016-07-14

NOZZLE FOR COOLING VACUUM HEAT TREATMENT FURNACE

#53
20160177424
2016-06-23

NI-BASE SUPERALLOY AND MANUFACTURING METHOD THEREOF

#54
20160160306
2016-06-09

COIL SPRING, AND METHOD FOR MANUFACTURING SAME

#55
20160144468
2016-05-26

Method of manufacturing cemented carbide cutting tool and cutting tool manufactured by the method

#56
20160123951
2016-05-05

Software and Method of Calculation of Carbon Concentration Distribution

#57
20160122858
2016-05-05

Carburized component and method for manufacturing same

#58
20160102378
2016-04-14

GRAIN ORIENTED ELECTRICAL STEEL SHEET AND METHOD OF MANUFACTURING THE SAME

#59
20160102377
2016-04-14

Device for individual quench hardening of technical equipment components

#60
20160101452
2016-04-14

Hot extrusion die tool and method of making same

#61
20160060720
2016-03-03

Stainless steel and method of manufacturing the same

#62
20150364234
2015-12-17

Manufacturing method of rare earth magnet based on heat treatment of fine powder

#63
20150361544
2015-12-17

Apparatus and method for nitriding grain-oriented electrical steel sheet

#64
20150340136
2015-11-26

Manufacturing method of an alloy powder for rare earth magnet and the rare earth magnet based on heat treatment

#65
20150129089
2015-05-14

Hydrogen-free amorphous dielectric insulating thin films with no tunneling states

#66
20150047735
2015-02-19

Method for heat treating a metal tube or pipe, metal tube or pipe, and heat treatment furnace

#67
20150017593
2015-01-15

Heat treatment method

#68
20140291903
2014-10-02

Vacuum heat treatment device

#69
20140127635
2014-05-08

Vacuum heat treatment apparatus

#70
20140042678
2014-02-13

20 bar super quench vacuum furnace

#71
20140027027
2014-01-30

Hydrogen out gas of porous metal scaffold

#72
20130186520
2013-07-25

Concurrent flow of activating gas in low temperature carburization

#73
20130004883
2013-01-03

High-nitrogen stainless-steel pipe with high strength high ductility, and excellent corrosion and heat resistance

#74
20120310421
2012-12-06

Method for controlling vacuum pumps in an industrial furnace complex

#75
20120247627
2012-10-04

Quenching process and apparatus for practicing said process

#76
20120028202
2012-02-02

HEAT TREATMENT DEVICE AND HEAT TREATMENT METHOD

#77
20110253270
2011-10-20

Gun barrel of firearms

#78
20110215090
2011-09-08

Electromagnetic wave processing apparatus

#79
20110174419
2011-07-21

System and method for annealing alloy steel components

#80
20100272422
2010-10-28

Retort furnace for heat and/or thermochemical treatment

#81
20100012230
2010-01-21

APPARATUS AND METHOD FOR THE HEAT TREATMENT OF INTEGRAL ROTORS OF GAS TURBINES

#82
20090320962
2009-12-31

CARBURIZING APPARATUS AND CARBURIZING METHOD

#83
20090314388
2009-12-24

Method and device for thermal treatment of metallic materials

#84
20080073001
2008-03-27

Vacuum carburization processing method and vacuum carburization processing apparatus

#85
20080041504
2008-02-21

Method for reducing surface particle shedding

#86
20080006346
2008-01-10

Vacuum carburizing apparatus

#87
20070050976
2007-03-08

Method of repairing a crack in a turbine component

#88
20070010870
2007-01-11

Tubular stent with oval struts

#89
20060180961
2006-08-17

Furnace for vacuum carburizing with unsaturated aromatic hydrocarbons

#90
20060150907
2006-07-13

Method and device for blacking components

#91
20060131794
2006-06-22

Hydrogen closed-cycle hardening unit

#92
20060108719
2006-05-25

Vacuum carburizing method and device

#93
20060102254
2006-05-18

Hydrocarbon gas mixture for the under-pressure carburizing of steel

#94
20050104266
2005-05-19

Vacuum furnace with pressurized intensive water quench tank

#95
20050046095
2005-03-03

Flapper gas nozzle assembly

#96
20050023738
2005-02-03

Method and device for inhibiting contamination of a workpiece