ClassID:

118989

C21D7/04 - CPC Classification

Classification description:

Modifying the physical properties of iron or steel by deformation by cold working of the surface

Sub-classes:
Recent Application in this class:
#1
20260022444
2026-01-22

METHOD FOR MANUFACTURING A METAL SHEET WITH A ZNAL COATING AND WITH OPTIMIZED WIPING, CORRESPONDING METAL SHEET, PART AND VEHICLE

#2
20240326182
2024-10-03

Double-sided ultrasonic rolling cooperative strengthening system and control method thereof

#3
20240052460
2024-02-15

Sheet steel having a deterministic surface structure

#4
20230250501
2023-08-10

ROBOT MACHINING SYSTEM AND CONTROL METHOD FOR ULTRASONIC SURFACE ROLLING PROCESS OF AIRCRAFT ENGINE BLADE

#5
20230243015
2023-08-03

METHOD FOR PROCESSING CORROSION RESISTANT AUSTENITIC STAINLESS STEEL

#6
20230201899
2023-06-29

Sheet steel having a deterministic surface structure

#7
20230119030
2023-04-20

METHOD FOR MANUFACTURING A METAL SHEET WITH A ZnAl COATING AND WITH OPTIMIZED WIPING, CORRESPONDING METAL SHEET, PART AND VEHICLE

#8
20230036990
2023-02-02

Method of treating a mining insert

#9
20220389556
2022-12-08

AMORPHOUS ALLOY PARTICLE AND METHOD FOR MANUFACTURING AMORPHOUS ALLOY PARTICLE

#10
20220024181
2022-01-27

Hot-dip galvanized steel sheet having excellent surface appearance and low-temperature bonding brittleness

#11
20210355556
2021-11-18

Method for improving yield strength of a workpiece, an apparatus and a workpiece thereof

#12
20210214815
2021-07-15

METHOD OF HARDENING MANGANESE STEEL USING ULTRASONIC IMPACT TREATMENT

#13
20210108281
2021-04-15

Portable multi-azimuth ultrasonic-assisted vibration rolling device and application method thereof

#14
20210102268
2021-04-08

Method for manufacturing metal plate

#15
20200308680
2020-10-01

Amorphous alloy particle and method for manufacturing amorphous alloy particle

#16
20200270732
2020-08-27

Method for manufacturing a metal sheet with a ZnAl coating and with optimized wiping, corresponding metal sheet, part and vehicle

#17
20200216924
2020-07-09

Method and device for work-hardening a crankshaft

#18
20200208233
2020-07-02

High fatigue strength components requiring areas of high hardness

#19
20200115787
2020-04-16

ALLOY STEEL IN WHICH CARBURIZATION IS PREVENTED BY PROCESSING LOAD AND METHOD OF MANUFACTURING THE SAME

#20
20190345575
2019-11-14

Method for cold deformation of an austenitic steel

#21
20190337040
2019-11-07

Apparatus, system, and method for forming metal parts

#22
20190300977
2019-10-03

METHOD OF STEEL PROCESSING COMBINING THERMAL AND MECHANICAL SURFACE TREATMENT TO CONTROL METALLURGICAL PHASE AND MECHANICAL RESPONSE

#23
20190262885
2019-08-29

ELECTROMAGNETIC HAMMER DEVICE FOR THE MECHANICAL TREATMENT OF MATERIALS AND METHOD OF USE THEREOF

#24
20190247945
2019-08-15

Method for connecting two individual elements of an underwater fluid-transport pipe subject to fatigue

#25
20190217441
2019-07-18

ROBOTIZED HAMMERING METHOD AND ROBOTIZED SYSTEM FOR IMPLEMENTING THE METHOD

#26
20190160500
2019-05-30

Colored stainless steel plate and colored stainless steel coil

#27
20190149021
2019-05-16

Method for manufacturing core plate

#28
20190062857
2019-02-28

PROCESS FOR FORMING A STAINLESS STEEL WELDMENT RESISTANT TO STRESS CORROSION CRACKING

#29
20190024204
2019-01-24

Dual hardness steel article

#30
20190013525
2019-01-10

Stainless steel for polymer fuel cell separation plate having improved hydrophilicity and contact resistance and method for manufacturing same

#31
20180371594
2018-12-27

Solid-state welding of coarse grain powder metallurgy nickel-based superalloys

#32
20180207695
2018-07-26

Method for manufacturing a component of austenitic TWIP or TRIP/TWIP steel

#33
20180187295
2018-07-05

Alloy steel in which carburization is prevented by processing load and method of manufacturing the same

#34
20180171428
2018-06-21

Method for treating toughness and hardness of drill bit buttons

#35
20180171426
2018-06-21

Steel pipe for fuel injection pipe and method for producing the same

#36
20180133851
2018-05-17

METHOD OF REVERSING SURFACE STRESS ON A COATED COMPONENT

#37
20180099327
2018-04-12

Device for performing strengthening treatment on tooth root of gear

#38
20180036842
2018-02-08

Hammering device for influencing workpieces

#39
20170314089
2017-11-02

Zinc-coated hot formed high strength steel part with through-thickness gradient microstructure

#40
20170275717
2017-09-28

EXPLOSIVE HARDENING OF TRACK SHOES

#41
20170240984
2017-08-24

Valve body treated by autofrettage

#42
20170165742
2017-06-15

Crankshaft and method of strengthening shaft component

#43
20170165736
2017-06-15

Apparatus, system, and method for forming metal parts

#44
20160361746
2016-12-15

Water jet peening device

#45
20160358680
2016-12-08

Control rod device mechanism inner diameter annulus ultra high pressure cavitation peening

#46
20160138127
2016-05-19

Laser processing apparatus and laser processing method

#47
20160108487
2016-04-21

Pneumatic needling device

#48
20160017455
2016-01-21

Method of making a dual hardness steel article

#49
20150321299
2015-11-12

Water jet peening device

#50
20150290696
2015-10-15

Apparatus and a method for surface processing a metallic structure

#51
20150258596
2015-09-17

Peening device and peening method

#52
20150219524
2015-08-06

System and method for improving a workpiece

#53
20150174728
2015-06-25

Method for machining materials by milling and subsequent brushing

#54
20150118097
2015-04-30

High cleanliness spring steel and high cleanliness spring excellent in fatigue properties

#55
20150114074
2015-04-30

Multiaxial vibration-peening system

#56
20150075240
2015-03-19

Control feedback loop for real-time variable needle peen forming

#57
20150047162
2015-02-19

Device and method for electromechanically-assisted roller burnishing

#58
20150007912
2015-01-08

Method for manufacturing ferrous material

#59
20140356644
2014-12-04

TiAl blade with surface modification

#60
20140318672
2014-10-30

High strength hot rolled steel sheet for line pipe use excellent in low temperature toughness and ductile fracture arrest performance and method of production of same

#61
20140208861
2014-07-31

System and method for improving a workpiece

#62
20140166160
2014-06-19

Surface treatment of a metal part

#63
20140007394
2014-01-09

Method and compression apparatus for introducing residual compression into a component having a regular or an irregular shaped surface

#64
20130183887
2013-07-18

Drill bit for a rock drilling tool with increased toughness and method for increasing the toughness of such drill bits

#65
20130183157
2013-07-18

METHOD OF SURFACE TREATMENT FOR DOVETAIL IN GAS TURBINE ENGINE FAN BLADE

#66
20130171473
2013-07-04

METHOD FOR MAKING PATTERNS ON METAL ARTICLE AND THE RESULTING METAL ARTICLE

#67
20130146173
2013-06-13

Stent with improved flexibility and method for making same

#68
20130084190
2013-04-04

TITANIUM ALUMINIDE ARTICLES WITH IMPROVED SURFACE FINISH AND METHODS FOR THEIR MANUFACTURE

#69
20130074561
2013-03-28

Method and apparatus for surface enhancement

#70
20120295123
2012-11-22

Steel plate for cold forging and process for producing same

#71
20120174760
2012-07-12

Dual hardness steel article

#72
20120085469
2012-04-12

METHOD FOR MANUFACTURING PROJECTION MATERIALS FOR A SHOT PEENING

#73
20120082587
2012-04-05

High strength low alloyed sintered steel

#74
20120034490
2012-02-09

Article for improved adhesion of fatigue-prone components

#75
20110232348
2011-09-29

Evaluation method of residual stress in water jet peening and method of executing water jet peening

#76
20110223443
2011-09-15

Metallic components for use in corrosive environments and method of manufacturing

#77
20110179844
2011-07-28

Method and apparatus for surface strengthening of blisk blades

#78
20110123820
2011-05-26

Impact treatment method for improving fatigue characteristics of welded joint, impact treatment device for improving fatigue characteristics for same, and welded structure superior in fatigue resistance characteristics

#79
20110114227
2011-05-19

GRAIN REFINEMENT OF METALLIC COMPONENTS BY CONTROLLED STRAIN PATH CHANGE

#80
20110107571
2011-05-12

Peening Device for Peening Welds Inside Steel Submarine Pipes, Process for Producing Steel Submarine Pipes Using Such a Device, and Submarine Connection Pipe

#81
20110079328
2011-04-07

HIGH STRENGTH HOT ROLLED STEEL SHEET FOR LINE PIPE USE EXCELLENT IN LOW TEMPERATURE TOUGHNESS AND DUCTILE FRACTURE ARREST PERFORMANCE AND METHOD OF PRODUCTION OF SAME

#82
20110079070
2011-04-07

Method for preventing or arresting crack development and propagation

#83
20110061406
2011-03-17

METHOD OF COOLING STRETCH-FORMED-PART

#84
20110003645
2011-01-06

Constant velocity universal joint

#85
20110000717
2011-01-06

Drill bit for a rock drilling tool with increased toughness and method for increasing the toughness of such drill bits

#86
20100319344
2010-12-23

Compressor wheel

#87
20100300229
2010-12-02

Gear

#88
20100243715
2010-09-30

Welding railway lines

#89
20100132194
2010-06-03

Method and an apparatus for prestressing components

#90
20100111748
2010-05-06

HIGH CLEANLINESS SPRING STEEL AND HIGH CLEANLINESS SPRING EXCELLENT IN FATIGUE PROPERTIES

#91
20100051143
2010-03-04

Case Hardening Steel Tube Having Improved Workability and a Process for its Manufacture

#92
20100035079
2010-02-11

HIGH-STRENGTH COLD-ROLLED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME

#93
20100028713
2010-02-04

Method and article for improved adhesion of fatigue-prone components

#94
20090277541
2009-11-12

METHOD AND APPARATUS FOR HARDENING A SURFACE OF A COMPONENT

#95
20090277304
2009-11-12

PROCESS FOR PRODUCTION OF FE BASED AMORPHOUS ALLOY

#96
20090205798
2009-08-20

Method for producing antifriction layer of a plain bearing

#97
20090194204
2009-08-06

High cleanliness spring steel and high cleanliness spring excellent in fatigue properties

#98
20090056399
2009-03-05

Method for executing water jet peening

#99
20090043228
2009-02-12

LASER SHOCK PEENING OF MEDICAL DEVICES

#100
20080308199
2008-12-18

Method and device for the technique of cold microforging any freely formed 3-D surfaces

#101
20080292443
2008-11-27

Boom and arm member of construction machine excellent in weld zone fatigue strength and method of improvement of its fatigue strength

#102
20080277398
2008-11-13

SEAM-WELDED 36% NI-FE ALLOY STRUCTURES AND METHODS OF MAKING AND USING SAME

#103
20080217380
2008-09-11

Method and apparatus to relieve residual stress or distortion in a heat processed article

#104
20080177376
2008-07-24

Stent With Improved Flexibility and Method for Making Same

#105
20080155802
2008-07-03

Method for increasing fatigue notch capability of airfoils

#106
20080035627
2008-02-14

Oscillating system and tool for ultrasonic impact treatment

#107
20080008595
2008-01-10

Compressor wheel

#108
20070234772
2007-10-11

Surface treatment apparatus and method

#109
20070227215
2007-10-04

Method and apparatus for preventing or arresting crack development and propagation

#110
20070173143
2007-07-26

High efficiency hydrofoil and swim fin designs

#111
20070040476
2007-02-22

Oscillating system and tool for ultrasonic impact treatment

#112
20070010173
2007-01-11

Apparatus for forming microscopic recesses on a cylindrical bore surface and method of forming the microscopic recesses on the cylindrical bore surface by using the apparatus

#113
20070009662
2007-01-11

Surface strengthening method

#114
20060237104
2006-10-26

Ultrasonic impact machining of body surfaces to correct defects and strengthen work surfaces

#115
20060137777
2006-06-29

Method of improvement of toughness of heat affected zone at welded joint of steel plate

#116
20060130942
2006-06-22

Method of production of steel product with nanocrystallized surface layer

#117
20060053626
2006-03-16

Method for producing high-pressure fuel accumulators

#118
20060042070
2006-03-02

Internal surface treating method of hole before tapping on aluminumdiematerial, internal surface of hole processed casting structure, and industrial tool of internal surface improvement

#119
20060018782
2006-01-26

Media mixture for improved residual compressive stress in a product

#120
20060016858
2006-01-26

Method of improving quality and reliability of welded rail joint properties by ultrasonic impact treatment

#121
20060000302
2006-01-05

Seal for worm gear speed reducer

#122
20050279430
2005-12-22

Sub-surface enhanced gear

#123
20050229372
2005-10-20

Method of finishing a metal preform

#124
20050224562
2005-10-13

Apparatus and method for forming a weld joint having improved physical properties

#125
20050211029
2005-09-29

Apparatus and method for improving work surface during forming and shaping of materials

#126
20050145306
2005-07-07

Welded joints with new properties and provision of such properties by ultrasonic impact treatment

#127
20050145000
2005-07-07

Apparatus and method for rolling workpieces

#128
20050103362
2005-05-19

Method and devices for peening and cleaning metal surfaces

#129
20050092397
2005-05-05

Ultrasonic impact methods for treatment of welded structures

#130
20050005669
2005-01-13

Fatigue enhancement of material surrounding openings in workpieces

#131
20050005668
2005-01-13

Tubing expansion