Patents-Review.com
ClassID:

135240 ⎘

E21B10/48 - CPC Classification

Classification description:

Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type

Sub-classes:
Recent Application in this class:
#1
20230118597
2023-04-20

DIAMOND MINING CORE DRILL BIT AND METHODS OF MAKING THE SAME

 #2
20220381675
2022-12-01

DOWNHOLE ROCK MECHANICS CHARACTERISATION TOOL, ASSEMBLY AND METHOD

 #3
20220290501
2022-09-15

Continuous sampling drill bit

 #4
20220120140
2022-04-21

Drill bits with variable cutter alignment

 #5
20210054695
2021-02-25

Continuous sampling drill bit

 #6
20200362642
2020-11-19

ANNULAR CUTTER WITH EXCHANGEABLE BIT RING

 #7
20200298375
2020-09-24

DRILLING TOOLS HAVING MATRICES WITH CARBIDE-FORMING ALLOYS, AND METHODS OF MAKING AND USING SAME

 #8
20190162029
2019-05-30

Drill bit

 #9
20190106941
2019-04-11

Thin-walled earth boring tools and methods of making the same

 #10
20180202236
2018-07-19

Earth-boring tools having impregnated cutting structures and methods of forming and using the same

 #11
20180117793
2018-05-03

Core drill bit

 #12
20180010391
2018-01-11

Vibratory apparatus for drilling apparatus

 #13
20170335630
2017-11-23

Fixed cutter drill bit having core receptacle with concave core cutter

 #14
20170328180
2017-11-16

Core bit designed to control and reduce the cutting forces acting on a core of rock

 #15
20170087693
2017-03-30

FIBER-CONTAINING DIAMOND-IMPREGNATED CUTTING TOOLS AND METHODS OF FORMING AND USING SAME

 #16
20160341036
2016-11-24

Coring tools and related methods

 #17
20160281439
2016-09-29

Plow-shaped cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and related methods

 #18
20160273272
2016-09-22

DRILL BIT

 #19
20160258223
2016-09-08

Coring tools for managing hydraulic properties of drilling fluid and related methods

 #20
20160201398
2016-07-14

Drilling tools having matrices with carbide-forming alloys, and methods of making and using same

 #21
20150345228
2015-12-03

Drill bit

 #22
20150300096
2015-10-22

Drill bits with axially-tapered waterways

 #23
20150267476
2015-09-24

Diamond impregnated bit with aggressive face profile

 #24
20150197999
2015-07-16

Impregnated drill bits with integrated reamers

 #25
20150075874
2015-03-19

Cutting device and method of making

 #26
20140311809
2014-10-23

Fiber-containing diamond-impregnated cutting tools and methods of forming and using same

 #27
20140231149
2014-08-21

Fiber-containing diamond-impregnated cutting tools and methods of forming and using same

 #28
20140138162
2014-05-22

Diamond mining core drill bit and methods of making thereof

 #29
20140013670
2014-01-16

Methods of forming earth-boring tools

 #30
20130228382
2013-09-05

Inner gauge ring drill bit

 #31
20130140095
2013-06-06

Drill bit alloy

 #32
20130112485
2013-05-09

Plow-shaped cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and related methods

 #33
20130008719
2013-01-10

Coring tools and related methods

 #34
20120228036
2012-09-13

Fiber-containing diamond-impregnated cutting tools and methods of forming and using same

 #35
20120199402
2012-08-09

Infiltrated diamond wear resistant bodies and tools

 #36
20120061146
2012-03-15

Impregnated drill bits with integrated reamers

 #37
20110303465
2011-12-15

Impregnated drilling tools including elongated structures

 #38
20110226533
2011-09-22

PROGRESSIVE CUTTER SIZE AND SPACING IN CORE BIT INNER DIAMETER

 #39
20110174546
2011-07-21

Core drill bit

 #40
20110162892
2011-07-07

Sonic drill bits and sonic drilling systems

 #41
20110120774
2011-05-26

Drill bit and method for inserting, expanding, collapsing, and retrieving drill bit

 #42
20110036640
2011-02-17

Diamond impregnated bit with aggressive face profile

 #43
20110031034
2011-02-10

Polycrystalline compacts including in-situ nucleated grains, earth-boring tools including such compacts, and methods of forming such compacts and tools

 #44
20100101870
2010-04-29

Combination coring bit and drill bit using fixed cutter PDC cutters

 #45
20100089660
2010-04-15

Drill bits with axially-tapered waterways

 #46
20100008738
2010-01-14

Fiber-containing cutting tools

 #47
20090283326
2009-11-19

Sonic drill bit for core sampling

 #48
20090166088
2009-07-02

Subsurface formation core acquisition system using high speed data and control telemetry

 #49
20090078469
2009-03-26

Methods of forming fiber-containing diamond-impregnated cutting tools

 #50
20090071724
2009-03-19

Drilling systems including fiber-containing diamond-impregnated cutting tools

 #51
20080128170
2008-06-05

Fiber-containing diamond-impregnated cutting tools

 #52
20080066969
2008-03-20

Drill bit

 #53
20070131456
2007-06-14

Bit for drilling a hole

 #54
16544333
2020-04-21

Continuous sampling drill bit

 #55
16004108
2020-10-13

Drill for characterization of materials

 #56
15990756
2019-05-07

Heavy equipment concrete core drill attachment