ClassID:

135259

E21B10/58 - CPC Classification

Classification description:

Drill bits characterised by wear resisting parts, e.g. diamond inserts Chisel-type inserts

Recent Application in this class:
#1
20230091613
2023-03-23

Multidirectional auger bit

#2
20220228445
2022-07-21

Auger bit

#3
20220025712
2022-01-27

Drill bit for boring earth and other hard materials

#4
20210270089
2021-09-02

EARTH-BORING DRILL BIT WITH CHISEL CUTTER

#5
20210254411
2021-08-19

Cutter bit

#6
20210180410
2021-06-17

Cutting elements with increased curvature cutting edges

#7
20200277854
2020-09-03

STRIKE TIP FOR A PICK TOOL

#8
20200123857
2020-04-23

Drill bit for chiselling rock

#9
20180371844
2018-12-27

Direct casting of ultrahard insert in bit body

#10
20180363384
2018-12-20

Mechanical locking of cutting element with carbide matrix

#11
20180363382
2018-12-20

Mechanical locking of ovoid cutting element with carbide matrix

#12
20180313162
2018-11-01

Polycrystalline diamond chisel type insert for use in percussion drill bits even for use in large hole percussion drilling of oil wells

#13
20180230752
2018-08-16

Rotational drill bits and apparatuses including the same

#14
20180163482
2018-06-14

Cutting elements, earth-boring tools including the cutting elements, and methods of forming the cutting elements

#15
20170159368
2017-06-08

Rotational drill bits and drilling apparatuses including the same

#16
20170157799
2017-06-08

Drill bit

#17
20160230473
2016-08-11

A ROCK REMOVAL BODY

#18
20160230472
2016-08-11

Drill bits and earth-boring tools including shaped cutting elements and associated methods

#19
20160082524
2016-03-24

Cutting tip

#20
20160060964
2016-03-03

Earth-boring tools with extended cutting features and related methods

#21
20160002981
2016-01-07

Cutter element for rock removal applications

#22
20150354286
2015-12-10

Cutter element for rock removal applications

#23
20150114727
2015-04-30

Earth-boring tools including cutting elements with alignment features and related methods

#24
20150075874
2015-03-19

Cutting device and method of making

#25
20150059255
2015-03-05

Drill bits, cutting elements for drill bits, and drilling apparatuses including the same

#26
20140332284
2014-11-13

Rotational drill bits and drilling apparatuses including the same

#27
20140319897
2014-10-30

Flat cutter bit with cutting insert having edge preparation

#28
20140318872
2014-10-30

Two prong rotary drill bit with cutting insert having edge preparation

#29
20140318871
2014-10-30

Rotary drill bit with cutting insert having edge preparation

#30
20140318870
2014-10-30

Rotary drill bit with cutting insert for engaging earth strata

#31
20140262534
2014-09-18

Rotational drill bits and drilling apparatuses including the same

#32
20140034395
2014-02-06

Drill head for a drill and drill

#33
20130319774
2013-12-05

Drill bit and cutting head for drill bit

#34
20130199856
2013-08-08

Drill bits and earth-boring tools including shaped cutting elements

#35
20130186694
2013-07-25

Superabrasive-impregnated earth-boring tools with extended features and aggressive compositions, and related methods

#36
20130140093
2013-06-06

Drill bit having geometrically sharp inserts

#37
20130115020
2013-05-09

Rock drilling tool for rotational percussive machining of concrete, rock, masonry and such materials

#38
20120241223
2012-09-27

Cutting insert for a roof drill bit

#39
20120160573
2012-06-28

Drill bits, cutting elements for drill bits, and drilling apparatuses including the same

#40
20120043138
2012-02-23

Rotational drill bits and drilling apparatuses including the same

#41
20110168453
2011-07-14

Rock drill bit

#42
20110048811
2011-03-03

Drill bit with a retained jack element

#43
20100303566
2010-12-02

Composite articles

#44
20100300766
2010-12-02

Convex crested insert with deflected wedge surfaces

#45
20100187019
2010-07-29

Roof drill bit, roof drill bit body and hard cutting insert for roof drill bit

#46
20100158625
2010-06-24

Drill head for rock drills

#47
20100135741
2010-06-03

Drill bit including one piece cutting head

#48
20100108400
2010-05-06

Hard metal plate for rock drill and rock drill

#49
20090178856
2009-07-16

Drill bit and cutter element having a fluted geometry

#50
20080302577
2008-12-11

Drill bit with radially expandable cutter, and method of using same

#51
20080226943
2008-09-18

Composite articles

#52
20080047759
2008-02-28

Hard material insert for a drill and a drill with the hard material insert

#53
20080011522
2008-01-17

Drill bit with a retained jack element

#54
20070278016
2007-12-06

Hard material head and rotary percussion drill bit

#55
20070209842
2007-09-13

Hard material bit

#56
20070169965
2007-07-26

Drilling tool with a cutting element that is configured as a plate or head

#57
20070000701
2007-01-04

Drill bit, a drill rod and a self drilling roof bolt

#58
20060243496
2006-11-02

Drilling and/or chiseling tool

#59
20060118341
2006-06-08

Drill in particular masonry drill

#60
20060065446
2006-03-30

Rotary drill bit having cutting insert with a notch

#61
20060032676
2006-02-16

Drill bit

#62
20060011388
2006-01-19

Drill bit and cutter element having multiple extensions