ClassID:

119086

C21D9/22 - CPC Classification

Classification description:

Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools

Recent Application in this class:
#1
20230349018
2023-11-02

SURFACE-HARDENED, ROTATIONALLY SYMMETRICAL WORKPIECE, HARDENING METHOD AND HARDENING APPARATUS

#2
20230184110
2023-06-15

METHOD OF TREATING A CEMENTED CARBIDE MINING INSERT

#3
20230036990
2023-02-02

Method of treating a mining insert

#4
20220341321
2022-10-27

Wear-resistant armored cutting tool

#5
20220275989
2022-09-01

Deep Cryogenic Treatment Chamber for Industrial Applications

#6
20220090222
2022-03-24

Drill tool and method for producing same

#7
20210332453
2021-10-28

Surface-hardened, rotationally symmetrical workpiece, hardening method and hardening apparatus

#8
20210316397
2021-10-14

System for treating material of a cutting element

#9
20200325584
2020-10-15

Boring bit component with hard face wear resistance material with subsequent heat treatment

#10
20200246877
2020-08-06

METHOD FOR PRODUCING HIGH-SPEED TOOL STEEL MATERIAL, METHOD FOR PRODUCING HIGH-SPEED TOOL STEEL PRODUCT, AND HIGH-SPEED TOOL STEEL PRODUCT

#11
20200190911
2020-06-18

Drill bit for drilling and method for manufacturing same

#12
20180363080
2018-12-20

High-speed tool steel, material for tools, and method for producing material for tools

#13
20180209024
2018-07-26

Drill component

#14
20180209023
2018-07-26

Martensitic stainless steel

#15
20180171428
2018-06-21

Method for treating toughness and hardness of drill bit buttons

#16
20180171427
2018-06-21

Compressive residual stress-hardened downhole tool shaft region

#17
20180163481
2018-06-14

MMC DOWNHOLE TOOL REGION COMPRISING AN ALLOTROPIC MATERIAL

#18
20180147636
2018-05-31

Method for producing high-speed tool steel material, method for producing high-speed tool steel product, and high-speed tool steel product

#19
20180105905
2018-04-19

BAINITIC STEEL FOR ROCK DRILLING COMPONENT

#20
20180010397
2018-01-11

Cutting elements comprising a low-carbon steel material, related earth-boring tools, and related methods

#21
20170275949
2017-09-28

Drill bit for drilling and method for manufacturing same

#22
20170159147
2017-06-08

Tire rasp blade

#23
20170120315
2017-05-04

Soil auger and method of manufacture

#24
20170072477
2017-03-16

PARTIALLY HARDENED ROTARY TOOL AND CORRESPONDING PRODUCTION METHOD

#25
20160354850
2016-12-08

METHOD OF MANUFACTURING GEAR-CUTTING TOOLS

#26
20160333523
2016-11-17

Creping blade and method for its manufacturing

#27
20160333449
2016-11-17

STAINLESS STEEL AND A CUTTING TOOL BODY MADE OF THE STAINLESS STEEL

#28
20160265075
2016-09-15

Screw conveyor made of alloyed steel and tempered by electromagnetic induction or exposure to a flame

#29
20160229010
2016-08-11

METHOD FOR PRODUCING A DRILL BIT

#30
20160158894
2016-06-09

Earth-boring tools with precise cutter pocket location and orientation and related methods

#31
20160144468
2016-05-26

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

#32
20160076315
2016-03-17

Method for manufacturing superior 13Cr friction-welded drillrod

#33
20160010189
2016-01-14

Die steel and method for producing same

#34
20150344997
2015-12-03

BAINITIC STEEL FOR ROCK DRILLING COMPONENT

#35
20150204142
2015-07-23

Rotary drill bits comprising maraging steel and methods of forming such drill bits

#36
20150176107
2015-06-25

Tool for piercing mill

#37
20150114199
2015-04-30

Methods of thermo-mechanically processing tool steel and tools made from thermo-mechanically processed tool steels

#38
20150101714
2015-04-16

Recrystallization, refinement, and strengthening mechanisms for production of advanced high strength metal alloys

#39
20150096548
2015-04-09

Chisels

#40
20150090372
2015-04-02

Recrystallization, Refinement, and Strengthening Mechanisms For Production Of Advanced High Strength Metal Alloys

#41
20140305922
2014-10-16

Tube welding rod resistant to high stress abrasion

#42
20140079585
2014-03-20

High speed tool steel, material for blade edge, cutting tool, and manufacturing method of material for blade edge

#43
20130186159
2013-07-25

Shear for shearing products and associated production process

#44
20130183887
2013-07-18

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

#45
20130146366
2013-06-13

Methods of forming earth-boring tools

#46
20120301238
2012-11-29

Chisels

#47
20120279370
2012-11-08

Punching tool

#48
20120237390
2012-09-20

Martensitic Stainless Steel Produced by a Twin Roll Strip Casting Process and Method for Manufacturing Same

#49
20120132322
2012-05-31

ABRASION RESISTANT STEEL, METHOD OF MANUFACTURING AN ABRASION RESISTANT STEEL AND ARTICLES MADE THEREFROM

#50
20120067651
2012-03-22

HARDFACING COMPOSITIONS, METHODS OF APPLYING THE HARDFACING COMPOSITIONS, AND TOOLS USING SUCH HARDFACING COMPOSITIONS

#51
20120063858
2012-03-15

Indexable Drill and Drill Body

#52
20110239835
2011-10-06

Steel for machine structure use excellent in cutting tool lifetime and machining method of same

#53
20110135414
2011-06-09

Method of increasing the fracture toughness of the outer layer of a carbide cutting bit of a drill

#54
20110000717
2011-01-06

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

#55
20110000587
2011-01-06

Steel

#56
20100272593
2010-10-28

HIGH CORROSION-RESISTANT, HIGH-STRENGTH AND NON-MAGNETIC STAINLESS STEEL, HIGH CORROSION-RESISTANT, HIGH-STRENGTH AND NON-MAGNETIC STAINLESS STEEL PRODUCT AND METHOD FOR PRODUCING THE SAME

#57
20100189891
2010-07-29

Method of strengthening tool material by penetration of reinforcing particles

#58
20090272470
2009-11-05

Method of heat treating cultivating disc, coulter, and seed drill blades made from heat quenched boron steels, such that they can be roller re-edged and re-sharpened, and yet retain excellent toughness, hardness and wear characteristics, and are especially useful in dry sandy soils such as found in certain wheat growing regions

#59
20090260298
2009-10-22

Cryogenic Treatment Systems and Processes for Grinding Wheels and Bonded Abrasive Tools

#60
20090229417
2009-09-17

Methods of thermo-mechanically processing tool steel and tools made from thermo-mechanically processed tool steels

#61
20090170414
2009-07-02

Cryogenic treatment processes for diamond abrasive tools

#62
20090165900
2009-07-02

Method for the heat treatment of a profile, device for the heat treatment of a profile and profile

#63
20090078343
2009-03-26

EARTHBORING TOOL AND METHOD OF CASEHARDENING

#64
20090013831
2009-01-15

Elongated percussive rock drilling element, a method for production thereof and a use thereof

#65
20090008154
2009-01-08

Earth boring drill bits made from a low-carbon, high-molybdenum alloy

#66
20080314203
2008-12-25

Process of drill bit manufacture

#67
20060260439
2006-11-23

Holder for a cutting tool for metalworking and a method for the production of a holder for a cutting tool

#68
20060042837
2006-03-02

Maintaining carburized case during neutral to the core heat treatment processes

#69
20050217901
2005-10-06

Drill rod and method of manufacture thereof

#70
20050002744
2005-01-06

Cutting tool for metal working as well as method in the production of cutting tools