ClassID:

135353

E21B19/12 - CPC Classification

Classification description:

Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables Rope clamps ; Rod, casings or tube clamps not secured to elevators

Recent Application in this class:
#1
20250052665
2025-02-13

Method of Determining a Grip Coefficient

#2
20240125187
2024-04-18

Blowout preventer assembly

#3
20230212917
2023-07-06

Gooseneck connector system

#4
20220056769
2022-02-24

Rod jack apparatus

#5
20210246740
2021-08-12

Gooseneck connector system

#6
20200392799
2020-12-17

Casing guide and clamp assembly

#7
20200165882
2020-05-28

Safety device for attaching to a pipe string comprising a plurality of connected pipe sections

#8
20200048991
2020-02-13

Pressure control equipment systems and methods

#9
20190383113
2019-12-19

Tool Trap Systems and Methods

#10
20190323495
2019-10-24

Rod clamp assembly and method

#11
20190234157
2019-08-01

Sealing/locking rod safety clamp and ram system

#12
20190055795
2019-02-21

Launching and retrieving wireline eat sensors

#13
20180371863
2018-12-27

Riserless light well intervention clamp system, clamp for use in the system, and method of riserless intervention or abandonment of a subsea well from a floating installation

#14
20180128063
2018-05-10

Alternative locking arrangements for tubular connections

#15
20170130563
2017-05-11

Overtensioning fastening tool

#16
20160376808
2016-12-29

Drilling rig column racker and methods of erecting same

#17
20160208560
2016-07-21

Fracturing tube system

#18
20160076330
2016-03-17

Hanger for an umbilically deployed electrical submersible pumping system

#19
20150252633
2015-09-10

Powered milling clamp for drill pipe

#20
20150204147
2015-07-23

Hydraulically deactivated clamp

#21
20150197996
2015-07-16

Load ring for lifting by elevator, of casing having an upset

#22
20140209763
2014-07-31

Sampling system and method

#23
20140131051
2014-05-15

Method and apparatus for handling a tubular

#24
20140048246
2014-02-20

Reverse Rotation Protection For Borehole Pumps

#25
20130161966
2013-06-27

Load ring for lifting by elevator, of cassing having no upset

#26
20130106102
2013-05-02

Torque enhanced threaded connection

#27
20130101380
2013-04-25

Rod clamping devices for hanging or pulling rod strings in a wellbore

#28
20130062048
2013-03-14

PULLING CLAMP FOR CONTINUOUS ROD OR COILED TUBING STRINGS

#29
20120312552
2012-12-13

Self-tightening clamps to secure tools along the exterior diameter of a tubing

#30
20120240365
2012-09-27

Elongate member termination

#31
20120107083
2012-05-03

Single joint elevator having deployable jaws

#32
20120061076
2012-03-15

Stop Collar for Tubulars

#33
20100206586
2010-08-19

Sampling system and method

#34
20100206564
2010-08-19

Sampling system and method

#35
20100059635
2010-03-11

Apparatus having improved interlocking units for flexibly restraining service loops in an oil derrick to prevent entangling of the loops

#36
20090065190
2009-03-12

OIL WELL POLISH ROD CLAMP FOR USE WITH A ROTATOR ON A BEAM PUMPING UNIT

#37
20090014169
2009-01-15

Single joint elevator with jaws secured by a powered door

#38
20080238117
2008-10-02

Load ring for lifting by elevator, of casing having no upset

#39
20080174131
2008-07-24

Single joint elevator having deployable jaws

#40
20080093091
2008-04-24

Method and device for preventing pipeskidding

#41
20080078965
2008-04-03

BLOWOUT PREVENTER AND PUMP ROD CLAMP

#42
20080066925
2008-03-20

Self-tightening safety tubular clamp

#43
20070175625
2007-08-02

Polish rod clamping device

#44
20070141922
2007-06-21

Clamp

#45
20060065407
2006-03-30

Apparatus and method for handling umbilical or control lines for tubing of a well

#46
20050211428
2005-09-29

Pump rod clamp and blowout preventer

#47
20050082857
2005-04-21

Load ring for lifting by elevator, of casing having no upset

#48
20050072882
2005-04-07

Method and a device for preventing pipeskidding

#49
15880538
2019-04-02

Cable gripper system