ClassID:

119152

C21D2221/01 - CPC Classification

Classification description:

Treating localised areas of an article End parts (e.g. leading, trailing end)

Recent Application in this class:
#1
20260022438
2026-01-22

HIGH STRENGTH MEMBER, METHOD FOR MANUFACTURING HIGH STRENGTH MEMBER, AND METHOD FOR MANUFACTURING STEEL SHEET FOR HIGH STRENGTH MEMBER

#2
20230358189
2023-11-09

Cylinder head, cylinder block, internal combustion engine, and method for manufacturing cylinder head

#3
20230128222
2023-04-27

Cylinder head, cylinder block, internal combustion engine, and method for manufacturing cylinder head

#4
20230082585
2023-03-16

Method for Inductive Surface Layer Hardening

#5
20220220577
2022-07-14

HIGH STRENGTH MEMBER, METHOD FOR MANUFACTURING HIGH STRENGTH MEMBER, AND METHOD FOR MANUFACTURING STEEL SHEET FOR HIGH STRENGTH MEMBER

#6
20220042127
2022-02-10

Stud-weldable rebar

#7
20220000091
2022-01-06

HORSESHOE NAIL AND METHOD FOR MANUFACTURING SUCH HORSESHOE NAIL

#8
20210402452
2021-12-30

Method and apparatus for forming varied strength zones of a vehicle component

#9
20200283864
2020-09-10

Stud-weldable rebar

#10
20200232053
2020-07-23

Temperature control station for partially thermally treating a metal component

#11
20180363096
2018-12-20

METHOD FOR FORMING VARIED STRENGTH ZONES OF A VEHICLE COMPONENT

#12
20180362096
2018-12-20

Vehicle underbody assembly with thermally treated rear rail

#13
20180362090
2018-12-20

Vehicle underbody component protection assembly

#14
20180361964
2018-12-20

Vehicle bumper beam with varied strength zones

#15
20180361454
2018-12-20

Method and apparatus for forming varied strength zones of a vehicle component

#16
20180347005
2018-12-06

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

#17
20180179949
2018-06-28

Connecting rod for variable compression internal combustion engine

#18
20180016900
2018-01-18

Corrosion resistant yieldable bolt

#19
20170341619
2017-11-30

Gas pressure container and tube element for an airbag system, and method for producing same

#20
20170341187
2017-11-30

Hot-formed previously welded steel part with very high mechanical resistance and production method

#21
20170313149
2017-11-02

Leaf spring device and method for manufacturing leaf spring device

#22
20170304952
2017-10-26

Hot-formed previously welded steel part with very high mechanical resistance and production method

#23
20170298469
2017-10-19

Structural component including a tempered transition zone

#24
20170073791
2017-03-16

Method for hot forming thin semi-finished products

#25
20170072477
2017-03-16

PARTIALLY HARDENED ROTARY TOOL AND CORRESPONDING PRODUCTION METHOD

#26
20150147111
2015-05-28

Structural component including a tempered transition zone

#27
20150030382
2015-01-29

Hot-formed previously welded steel part with very high mechanical resistance and production method

#28
20140311711
2014-10-23

Cooling tank for rails

#29
20130343901
2013-12-26

Repair article of a gas turbine engine

#30
20130180633
2013-07-18

Method of manufacturing multi physical properties part

#31
20120098171
2012-04-26

Cooling tank for rails

#32
20110163512
2011-07-07

Steering tie rod end made of steel and method of manufacturing the same

#33
20100329884
2010-12-30

Turbine rotor blade

#34
20090269208
2009-10-29

Method of repairing an article

#35
20090255609
2009-10-15

Triple phase titanium fan and compressor blade and methods therefor

#36
20060231175
2006-10-19

Method for thermomechanical treatment of steel

#37
20050081964
2005-04-21

A Method Of Establishing Stress Relieving Procedures For Minimizing Sulfide Stress Cracking In Cold Worked Metals