ClassID:

152917

F16L15/002 - CPC Classification

Classification description:

Screw-threaded joints ; Forms of screw-threads for such joints with conical threads with more then one threaded section

Recent Application in this class:
#1
20260049676
2026-02-19

Coupled Connection for Tight Clearance Casing Strings in Oil and Gas Wells

#2
20250389161
2025-12-25

Coupled Connection for Drilling-With-Casing Operations and Tight Clearance Casing Strings in Oil and Gas Wells

#3
20250263987
2025-08-21

CURVILINEAR SEALING SYSTEM

#4
20250207714
2025-06-26

PIPE THREAD PROTECTOR WITH REMOVABLE END MEMBER AND INTERFERENCE-FIT PROTRUSION

#5
20250155056
2025-05-15

A THREADED PIPE CONNECTION

#6
20240229985
2024-07-11

SELF-LOCKING THREADED CONNECTION PARTIALLY IN NON-LOCKING ENGAGEMENT

#7
20240052710
2024-02-15

HIGH TORQUE THREADED CONNECTIONS WITH EXTERNAL UPSET AND MULTIPLE SEALS

#8
20240044426
2024-02-08

High torque threaded connections with triple taper thread profiles

#9
20230408000
2023-12-21

Threaded tubular connection

#10
20230399898
2023-12-14

Coupled Connection for Tight Clearance Casing Strings in Oil and Gas Wells

#11
20230383609
2023-11-30

Curvilinear sealing system

#12
20230313620
2023-10-05

Threaded connection for pipe

#13
20230228350
2023-07-20

HIGH PERFORMANCE SHOULDER RING FOR PIPE AND OTHER TUBULAR GOODS IN THE OIL AND GAS INDUSTRY

#14
20230072067
2023-03-09

Telescopically assembled mechanical connector

#15
20220356970
2022-11-10

Mechanical connector utilizing shear pins to transfer torque

#16
20220356969
2022-11-10

Mechanical connector utilizing keys to transfer torque

#17
20220356968
2022-11-10

Mechanical connector utilizing interlocked threads to transfer torque

#18
20220349502
2022-11-03

Mechanical connector utilizing dog-clutch teeth to transfer torque

#19
20220341518
2022-10-27

Threaded connection including and intermediate shoulder

#20
20220290784
2022-09-15

Threaded connection for exploration and production of a hydrocarbon well

#21
20220260186
2022-08-18

Threaded connection having a dissymmetrical helical profile

#22
20220259927
2022-08-18

Threaded connection for casing string of an oil well

#23
20220252189
2022-08-11

Universal connector or cap for male and female threaded fittings

#24
20220243856
2022-08-04

Pipe thread protector with removable end member and interference-fit protrusion

#25
20220243855
2022-08-04

Open-ended pipe thread protector with seal thereon and seal therefor

#26
20220163142
2022-05-26

Coupling

#27
20220106842
2022-04-07

Curvilinear sealing system

#28
20220082189
2022-03-17

Threaded connection for steel pipe

#29
20220010895
2022-01-13

System and method for anti-rotation between tubulars

#30
20220010894
2022-01-13

Threaded connection for steel pipe

#31
20210372543
2021-12-02

Pipe connector

#32
20210332917
2021-10-28

Threaded connection for steel pipe

#33
20210254763
2021-08-19

Threaded connection for steel pipes

#34
20210254413
2021-08-19

Multiple tapered threaded connection

#35
20210247004
2021-08-12

Tubular threaded connection

#36
20210156204
2021-05-27

Threaded connection for steel pipes

#37
20210048128
2021-02-18

Universal connector or cap for male and female threaded fittings

#38
20200370683
2020-11-26

Threaded joint for oilfield pipes

#39
20200370682
2020-11-26

Torque shoulder of a premium connection

#40
20200340604
2020-10-29

PIPE COUPLING AND METHOD

#41
20200332930
2020-10-22

Mechanical connectors

#42
20200284101
2020-09-10

Curvilinear sealing system

#43
20200048970
2020-02-13

PRESSURE BALANCING MECHANISM FOR A CONNECTOR

#44
20200024911
2020-01-23

Threaded tubular connection

#45
20190360619
2019-11-28

Threaded connection

#46
20190330930
2019-10-31

Threaded connection for steel pipe

#47
20190264841
2019-08-29

ENHANCEMENTS OF MECHANICAL CONNECTOR TECHNOLOGY

#48
20190234540
2019-08-01

Universal connector or cap for male and female threaded fittings

#49
20190211632
2019-07-11

Threaded joint for oil well steel pipe

#50
20190203857
2019-07-04

Threaded connection

#51
20190040978
2019-02-07

Threaded joint for steel pipes

#52
20190032820
2019-01-31

Threaded joint for steel pipe

#53
20180363813
2018-12-20

Threaded joint for steel pipe

#54
20180328119
2018-11-15

Curvilinear sealing system

#55
20180252343
2018-09-06

TORQUE SHOULDER OF A PREMIUM CONNECTION

#56
20180252342
2018-09-06

Torque shoulder of a premium connection

#57
20180223606
2018-08-09

Threaded tubular connection

#58
20180051836
2018-02-22

Enhancements of mechanical connector technology

#59
20180051835
2018-02-22

Threaded connection

#60
20180010402
2018-01-11

Threaded joint for coupling rods

#61
20170292638
2017-10-12

Threaded joint for steel pipes

#62
20170268298
2017-09-21

Interlock pipe connection

#63
20170198839
2017-07-13

Connecting oil country tubular goods

#64
20170175459
2017-06-22

Mechanical connector of long torsional and bending fatigue life

#65
20170167641
2017-06-15

Threaded connection including an intermediate shoulder

#66
20170159853
2017-06-08

Threaded connection

#67
20170122468
2017-05-04

THREADED JOINT FOR STEEL PIPES

#68
20170101830
2017-04-13

Threaded joint for steel pipes

#69
20160377204
2016-12-29

Potable Water Adapter for Beverage Equipment

#70
20160222740
2016-08-04

Pipe connector

#71
20160195203
2016-07-07

Pipe coupling

#72
20160160575
2016-06-09

Tubular connection with helically extending torque shoulder

#73
20160146381
2016-05-26

Assembly for producing a threaded connection for drilling and operating hydrocarbon wells, and method for producing such a threaded connection

#74
20160115742
2016-04-28

Assembly for producing a threaded connection for drilling and operating hydrocarbon wells, and resulting threaded connection

#75
20150316181
2015-11-05

Threaded connection

#76
20150240570
2015-08-27

Screw joint for steel pipe

#77
20150184781
2015-07-02

Threaded connection for double-walled pipes

#78
20150167875
2015-06-18

Joint for expansible host

#79
20150145247
2015-05-28

Alignment guide feature for metal to metal seal protection on mechanical connections and couplings

#80
20150096764
2015-04-09

Interlock pipe connection

#81
20150061288
2015-03-05

CONNECTING OIL COUNTRY TUBULAR GOODS

#82
20140145433
2014-05-29

Tubular connection with helically extending torque shoulder

#83
20140084582
2014-03-27

Tubular threaded connection

#84
20140054891
2014-02-27

Coupling for connecting tubular elements for bottom-hole assemblies

#85
20130219686
2013-08-29

Step-to-step wedge thread connections and related methods

#86
20130015657
2013-01-17

Tubular threaded connection

#87
20120325361
2012-12-27

Expansible threaded joint and method for making same

#88
20120312550
2012-12-13

Set for obtaining a threaded connection, method for making up and breaking out said connection, and use of said connection in a riser

#89
20120074693
2012-03-29

STEP-TO-STEP WEDGE THREAD CONNECTIONS AND RELATED METHODS

#90
20120074692
2012-03-29

Connecting oil country tubular goods

#91
20120074690
2012-03-29

Step-to-step wedge thread connections and related methods

#92
20120043756
2012-02-23

Tubular threaded connection

#93
20110266794
2011-11-03

Sealed tubular connection used in the oil industry

#94
20110265904
2011-11-03

Pipe thread protector

#95
20110037255
2011-02-17

Fatigue resistant pipe string component

#96
20100230959
2010-09-16

Low cost, high performance pipe connection

#97
20100171306
2010-07-08

Threaded element of a component with opposed threading portions and corresponding tubular threaded connection

#98
20090058085
2009-03-05

Oilfield tubular connection with increased compression capacity

#99
20080296894
2008-12-04

Oilfield threaded connections

#100
20080012321
2008-01-17

Resistance to fatigue of a threaded tubular connection

#101
20070187951
2007-08-16

Threaded tubular connection which is resistant to bending stresses

#102
20060145480
2006-07-06

Floating wedge thread for tubular connection

#103
20060131882
2006-06-22

Hang-free thread design

#104
14286864
2017-05-09

Threaded coupling