ClassID:

119154

C21D2221/10 - CPC Classification

Classification description:

Treating localised areas of an article Differential treatment of inner with respect to outer regions, e.g. core and periphery, respectively

Recent Application in this class:
#1
20240351094
2024-10-24

APPARATUS AND METHOD FOR MANUFACTURING RACK BAR

#2
20240261842
2024-08-08

METHOD AND ARRANGEMENT FOR PRODUCING A HARDENED SHEET METAL PRODUCT

#3
20230134881
2023-05-04

SLIDING ELEMENT, IN PARTICULAR PISTON RING, AND METHOD FOR PRODUCING SAME

#4
20220389960
2022-12-08

BEARING PART

#5
20210379648
2021-12-09

Apparatus and method for manufacturing rack bar

#6
20210348246
2021-11-11

Method for fixing a rail of a rail track with thermal conditioning of a rail portion, and associated rail machine

#7
20210180146
2021-06-17

High-strength reinforcing steel and method for manufacturing same

#8
20200392599
2020-12-17

METHOD FOR HEATING STEEL PLATE AND METHOD FOR MANUFACTURING HOT-PRESSED PRODUCT

#9
20200283865
2020-09-10

Method for preventing cracking along the surface at the inner hole of a hollow shaft during horizontal water quenching

#10
20200232061
2020-07-23

Method and device for heat treatment of a metal component

#11
20200208726
2020-07-02

Structured material alloy component fabrication

#12
20190329310
2019-10-31

METHOD AND ARRANGEMENT FOR PRODUCING A HARDENED SHEET METAL PRODUCT

#13
20190030584
2019-01-31

HEATING METHOD, HEATING APPARATUS, AND HOT PRESS MOLDING METHOD FOR PLATE WORKPIECE

#14
20190024226
2019-01-24

METHOD OF MANUFACTURING A PIN FOR A MOLD FOR A DIE CASTING PROCESS

#15
20180371563
2018-12-27

Device for generating a microstructure with a structural gradient in an axisymmetric part

#16
20180347005
2018-12-06

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

#17
20180312947
2018-11-01

STEEL SHEET FOR HOT PRESSING USE, PRESS-FORMED PRODUCT, AND METHOD FOR MANUFACTURING PRESS-FORMED PRODUCT

#18
20180133776
2018-05-17

Method for blow molding metal containers

#19
20170350588
2017-12-07

Apparatus and method for welding a waterwall panel

#20
20170327918
2017-11-16

PROCESS FOR OBTAINING A PISTON RING AND INTERNAL COMBUSTION ENGINE

#21
20170164425
2017-06-08

Heating method, heating apparatus and method of manufacturing press-molded article

#22
20170145533
2017-05-25

Hot-stamped steel

#23
20160319472
2016-11-03

Tool for textiles and production method for same

#24
20160312328
2016-10-27

Multi-track laser surface hardening of low carbon cold rolled closely annealed (CRCA) grades of steels

#25
20160290437
2016-10-06

Metal ring and manufacturing method for metal ring

#26
20160245367
2016-08-25

Chain element

#27
20160244856
2016-08-25

Slide rings having a ledeburitic microstructure at the surface

#28
20160114424
2016-04-28

Laser surface treatment method and laser surface treatment apparatus with radiating the surface to be treated along an acute angle

#29
20160010188
2016-01-14

Heat treatment method for increasing the depth of hardening layer in a steel rail and steel rail obtained with the method

#30
20150323053
2015-11-12

Structured material alloy component fabrication

#31
20150290696
2015-10-15

Apparatus and a method for surface processing a metallic structure

#32
20150273560
2015-10-01

Method for blow molding metal containers

#33
20150184270
2015-07-02

Wear resistant steel plate and manufacturing process therefor

#34
20150107727
2015-04-23

Method and system for thermal treatments of rails

#35
20150041023
2015-02-12

Fe-based metal plate and method of manufacturing the same

#36
20140348456
2014-11-27

Rolling bearing arrangement with inclined hardness zones

#37
20140299218
2014-10-09

Process for manufacturing a bellows and/or bellows

#38
20140209214
2014-07-31

Method and steel component

#39
20140190234
2014-07-10

Method for producing a press-hardened molded part, and press-hardening tool

#40
20130333190
2013-12-19

Method for bending sheet metal and product of sheet metal

#41
20130301969
2013-11-14

Method for producing a bearing ring

#42
20130098513
2013-04-25

Method for manufacturing an ultra-highstrength steel bar

#43
20120325373
2012-12-27

METHOD FOR TREATMENT OF METAL SURFACE, AND SURFACE-MODIFIED METAL PRODUCT

#44
20120312159
2012-12-13

MACHINE COMPONENT WITH A CAVITATION RESISTANT COVERING

#45
20120298262
2012-11-29

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

#46
20120291510
2012-11-22

HOT PRESS FORMING PROCESS OF PLATED STEEL AND HOT PRESS FORMED ARTICLES USING THE SAME

#47
20120279619
2012-11-08

TREATMENT FOR PREVENTING STRESS CORROSION CRACKING

#48
20120255656
2012-10-11

Steel sheet for can having excellent surface roughening resistance and manufacturing method thereof

#49
20120247618
2012-10-04

HIGH STRENGTH STEEL MATERIAL AND HIGH STRENGTH BOLT EXCELLENT IN DELAYED FRACTURE RESISTANCE AND METHODS OF PRODUCTION OF SAME

#50
20120241058
2012-09-27

CAST IRON CAST PART AND METHOD FOR PRODUCTION THEREOF

#51
20120211129
2012-08-23

Fe-based metal plate and method of manufacturing the same

#52
20120200205
2012-08-09

CONDUCTIVE COMPONENT AND METHOD FOR TREATING THE CONDUCTIVE COMPONENT

#53
20120186705
2012-07-26

Method and device for producing a metal component

#54
20120114091
2012-05-10

Zirconium alloy material

#55
20110268908
2011-11-03

Coin assembly and medal assembly, and method for fabricating the same

#56
20110247729
2011-10-13

Method for improving residual stress in pipe and method for construction management

#57
20110240374
2011-10-06

Downhole tool having a friction stirred surface region

#58
20110206307
2011-08-25

Wheel bearing apparatus for a vehicle

#59
20110179846
2011-07-28

Method and apparatus for making a part by first forming an intermediate part that has donor pockets in predicted low strain areas adjacent to predicted high strain areas

#60
20110162430
2011-07-07

Metal member manufacturing method, indenter and metal member manufacturing apparatus

#61
20100313988
2010-12-16

STEEL TUBE WITH EXCELLENT STEAM OXIDATION RESISTANCE AND METHOD FOR PRODUCING THE STEEL TUBE

#62
20100252150
2010-10-07

Heat treatment method of pin for endless track

#63
20100200127
2010-08-12

METHOD FOR THE LOCAL HARDENING OF RAILWAY WHEELSETS

#64
20100101686
2010-04-29

Method of making a nanostructured austenitic steel sheet

#65
20090151163
2009-06-18

Method for manufacturing cast iron member

#66
20090071214
2009-03-19

Steel tube with excellent steam oxidation resistance and method for producing the steel tube

#67
20080229877
2008-09-25

CRANKSHAFT, INTERNAL COMBUSTION ENGINE, TRANSPORTATION APPARATUS, AND PRODUCTION METHOD FOR CRANKSHAFT

#68
20080149229
2008-06-26

Rolling member and producing method thereof

#69
20080078554
2008-04-03

Imputing strength gradient in pressure vessels

#70
20080003109
2008-01-03

Component of variable thickness having residual compressive stresses therein, and method therefor

#71
20060249232
2006-11-09

Coil winding method for metal in bars

#72
20060175742
2006-08-10

Track bushing and method and apparatus for producing the same

#73
20060169374
2006-08-03

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

#74
20060165329
2006-07-27

Rolling bearing in aircraft

#75
20060144481
2006-07-06

Track bushing and method and apparatus for producing the same

#76
20060144480
2006-07-06

Track bushing and method and apparatus for producing the same

#77
20060021225
2006-02-02

Forming method of tooth trace of gear

#78
20050257860
2005-11-24

Rolling member and producing method thereof

#79
20050139290
2005-06-30

Ice skate blade produced by pulse plasma nitriding

#80
20050005668
2005-01-13

Tubing expansion