ClassID:

119074

C21D9/0093 - CPC Classification

Classification description:

Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for screws; for bolts

Recent Application in this class:
#1
20250043376
2025-02-06

METHODS FOR MANUFACTURING WIRE ROD FOR COLD FORGING AND SCREW PART, HAVING EXCELLENT DRILLING CHARACTERISTICS

#2
20250019811
2025-01-16

COMPONENT MADE OF B-ZR ALLOYED STEEL

#3
20240209469
2024-06-27

STEEL FOR BOLTS, AND MANUFACTURING METHOD THEREFOR

#4
20230250500
2023-08-10

Device and Method for Water Spray Quenching

#5
20230136145
2023-05-04

METHOD FOR PRODUCING A SCREW, AND SCREW

#6
20230037483
2023-02-09

ALUMINUM ALLOY, ALUMINUM ALLOY WIRE, ALUMINUM ALLOY MEMEBER, AND BOLT

#7
20220275854
2022-09-01

Method for producing a threaded nut of a threaded drive, in particular a ball screw nut of a ball screw drive

#8
20220195892
2022-06-23

FASTENING MEANS FOR A TURBINE- OR VALVE HOUSING

#9
20210371947
2021-12-02

ALLOYED STEEL AND QUENCHED AND TEMPERED STEEL

#10
20210079491
2021-03-18

Wire rod for cold heading, processed product using same, and manufacturing method therefor

#11
20210054866
2021-02-25

BIMETALLIC SCREW WITH MARTENSITICALLY HARDENABLE STEEL

#12
20210040978
2021-02-11

Bolt

#13
20210017618
2021-01-21

Bolt and fastened structure

#14
20200063231
2020-02-27

MARTENSITICALLY HARDENABLE STEEL AND USE THEREOF, IN PARTICULAR FOR PRODUCING A SCREW

#15
20190017141
2019-01-17

Method of heat treating a fastening member

#16
20190017132
2019-01-17

Ferritic stainless steel and heat-resistant member

#17
20190003000
2019-01-03

Bolt

#18
20180347004
2018-12-06

High-strength bolt

#19
20180216652
2018-08-02

High-strength screw including an unhardened thread end

#20
20180179949
2018-06-28

Connecting rod for variable compression internal combustion engine

#21
20180066344
2018-03-08

WIRE ROD FOR USE IN BOLTS THAT HAS EXCELLENT ACID PICKLING PROPERTIES AND RESISTANCE TO DELAYED FRACTURE AFTER QUENCHING AND TEMPERING, AND BOLT

#22
20180050383
2018-02-22

Method of machining screw

#23
20180031023
2018-02-01

High-strength screw including an unhardening layer

#24
20180016900
2018-01-18

Corrosion resistant yieldable bolt

#25
20170283921
2017-10-05

Steel for high-strength bolt, and high-strength bolt

#26
20170282236
2017-10-05

Hollow metal screw and method of making

#27
20170219000
2017-08-03

STEEL FOR BOLTS, AND BOLT

#28
20170218999
2017-08-03

Fasteners

#29
20160245326
2016-08-25

SCREW MADE OF LOW-ALLOY CARBON STEEL AND METHOD FOR PRODUCING SUCH A SCREW

#30
20160230260
2016-08-11

Steel for high-strength bolts which has excellent delayed fracture resistance and bolt formability, and bolt

#31
20160208841
2016-07-21

Hollow metal screw and method of making

#32
20160201710
2016-07-14

Hollow metal screw and method of making

#33
20160003281
2016-01-07

Hollow metal screw and method of making

#34
20150376764
2015-12-31

PROCESS FOR MANUFACTURING A FIXING DEVICE

#35
20150259763
2015-09-17

Austenitic heat-resistant alloy and method of manufacturing heat-resistant bolt using the same

#36
20150191805
2015-07-09

Steel wire rod having high strength and ductility and method for producing same

#37
20150053315
2015-02-26

Boron-added high strength steel for bolt and high strength bolt having excellent delayed fracture resistance

#38
20150003935
2015-01-01

Steel for bolt use, bolt, and method for manufacturing bolt

#39
20140241829
2014-08-28

Steel wire for bolt, bolt, and manufacturing processes therefor

#40
20140150934
2014-06-05

WIRE ROD HAVING SUPERIOR HYDROGEN DELAYED FRACTURE RESISTANCE, METHOD FOR MANUFACTURING SAME, HIGH STRENGTH BOLT USING SAME AND METHOD FOR MANUFACTURING BOLT

#41
20130302109
2013-11-14

Screw made of low-alloy carbon steel, and method for producing such a screw

#42
20130156627
2013-06-20

Compositions comprising nickel-titanium, methods manufacture thereof and articles comprising the same

#43
20130129446
2013-05-23

Ultra high strength screw having a high yield ratio

#44
20130121788
2013-05-16

Bicycle Tooth Plate Rivet

#45
20130087256
2013-04-11

Steel wire with high strength for cold forging to improve service life of mold and method of manufacturing the same

#46
20120298262
2012-11-29

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

#47
20120247618
2012-10-04

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

#48
20120230800
2012-09-13

High-strength bolt

#49
20120227872
2012-09-13

ULTRA-HIGH-STRENGTH STEEL WIRE HAVING EXCELLENT RESISTANCE TO DELAYED FRACTURE AND MANUFACTURING METHOD THEREOF

#50
20120128524
2012-05-24

STEEL WIRE ROD HAVING EXCELLENT COLD HEADING QUALITY AND HYDROGEN DELAYED FRACTURE RESISTANCE, METHOD OF MANUFACTURING THE SAME, AND MEHOD OF MANUFACTURING BOLT USING THE SAME

#51
20120024284
2012-02-02

Device for preheating objects, particularly aluminum strands, rods, or pins, as well as a system having such a device

#52
20110268533
2011-11-03

Bolt and manufacturing method of bolt

#53
20110252857
2011-10-20

METHOD FOR MAKING AN ANCHOR BOLT SLEEVE

#54
20110171590
2011-07-14

DEVICE FOR HEATING ROD-TYPE WORK PIECES

#55
20100252150
2010-10-07

Heat treatment method of pin for endless track

#56
20100227700
2010-09-09

Clinch nut fastening method

#57
20100170319
2010-07-08

METHOD FOR PRESS HARDENING OF METALS

#58
20100143067
2010-06-10

ANCHOR BOLT AND METHOD FOR MAKING SAME

#59
20100051144
2010-03-04

EXCELLENT COLD-WORKABILITY EXHIBITING HIGH-STRENGTH STEEL, WIRE OR STEEL BAR OR HIGH-STRENGTH SHAPED ARTICLE, AND PROCESS FOR PRODUCING THEM

#60
20090286608
2009-11-19

Method of forming a high performance thread forming screw

#61
20090277539
2009-11-12

Steel for Warm Working, Warm Working Method Using the Steel, and Steel Material and Steel Component Obtainable Therefrom

#62
20090173417
2009-07-09

METHOD FOR ANNEALING OR HARDENING OF METALS

#63
20090155118
2009-06-18

High Strength Steel

#64
20090060678
2009-03-05

Fastening element

#65
20090003968
2009-01-01

Bolt and Manufacturing Method of Bolt

#66
20080274007
2008-11-06

High-strength nonmagnetic stainless steel, and high-strength nonmagnetic stainless steel part and process for producing the same

#67
20080264524
2008-10-30

High-Strength Steel and Metal Bolt Excellent In Character of Delayed Fracture

#68
20080257460
2008-10-23

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

#69
20080216927
2008-09-11

High Temperature Bolt Material

#70
20080156403
2008-07-03

STEEL FOR HIGH-SPEED COLD WORKING AND METHOD FOR PRODUCTION THEREOF, AND PART FORMED BY HIGH-SPEED COLD WORKING AND METHOD FOR PRODUCTION THEREOF

#71
20080041503
2008-02-21

Excellent Cold-Workability Exhibiting High-Strength Steel Wire or Steel Bar or High-Strength Shaped Article, and Process for Producing Them

#72
20070256767
2007-11-08

Steel Wire for Cold Forging Having Excellent Low Temperature Impact Properties and Method of Producing the Same

#73
20070243043
2007-10-18

HIGH PERFORMANCE THREAD FORMING SCREW

#74
20070224017
2007-09-27

Clinch nut

#75
20070062620
2007-03-22

Fixing element comprising a low-alloyed steel and process for the production thereof

#76
20070017609
2007-01-25

Steel with excellent delayed fracture resistance and tensile strength of 1801 MPa class or more, and its shaped article

#77
20070006947
2007-01-11

Steel wire for cold forging having excellent low temperature impact properties and method of producing the same

#78
20060188384
2006-08-24

High strength steel

#79
20060185768
2006-08-24

Fixing element comprising a low-alloyed steel and process for the production thereof

#80
20060147296
2006-07-06

Screw or tapping screw

#81
20060078403
2006-04-13

Method for the production of a screw, and screw produced according to said method

#82
20050271541
2005-12-08

Martensitic stainless steel

#83
20050217763
2005-10-06

Quenched and tempered steel wire with superior cold forging characteristics

#84
20050214157
2005-09-29

High strength steel

#85
15895616
2025-06-17

Fastening structures with high coefficient of thermal expansion for reduction of thermally driven stresses in securing aluminum silicon alloys