Patents-Review.com
ClassID:

135425 ⎘

E21B25/18 - CPC Classification

Classification description:

Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors the core receiver being specially adapted for operation under water

Recent Application in this class:
#1
20260125957
2026-05-07

ESTURINE WETLAND SEDIMENT COLUMN SAMPLING APPARATUS AND METHOD

 #2
20240191603
2024-06-13

SOCK FOR A FLOATING VESSEL

 #3
20240060378
2024-02-22

Method for offshore dual-drive core drilling with three layers of casings under surge compensation

 #4
20230399910
2023-12-14

Multi-point drilling and sampling device applied to seafloor tracked vehicle

 #5
20220187271
2022-06-16

Transfer and online detection system for deep-sea sediment samples and application method thereof

 #6
20220074283
2022-03-10

Sock for a floating vessel

 #7
20220003062
2022-01-06

Underwater drilling device and method for procuring drill cores of a bed of a body of water

 #8
20210310323
2021-10-07

Suction-activated core catcher and related methods

 #9
20210254409
2021-08-19

Portable seafloor drill rig for submersible for multi-point core drilling

 #10
20210164300
2021-06-03

Wireline coring recovery system of a seafloor drilling rig and method of using same

 #11
20210140258
2021-05-13

Device, system and method for collecting samples from a bed of a waterbody

 #12
20200355590
2020-11-12

System for measuring mechanical properties of sea floor sediments at full ocean depths

 #13
20200325745
2020-10-15

SEABED CORE SAMPLING DEVICE AND CORE SAMPLING METHOD

 #14
20200248518
2020-08-06

Pressure-retaining cap screwing and unscrewing device for marine natural gas hydrate pressure-retaining rock-core barrel

 #15
20200131875
2020-04-30

Process for drilling natural gas hydrates with submersible core drilling rig using pressure wireline

 #16
20200131853
2020-04-30

Sediment core-drilling process for submarine wire-line coring drill rig

 #17
20190368978
2019-12-05

Underwater Sampling Method and Apparatus

 #18
20190368294
2019-12-05

Natural gas hydrate pressure-retaining corer

 #19
20190338611
2019-11-07

Automatic push corer system

 #20
20190032433
2019-01-31

Method for Collecting Geological Samples and Attitude-Controllable Work Apparatus

 #21
20170152719
2017-06-01

Underwater drilling device and method for procuring and analyzing ground samples of a bed of a body of water

 #22
20160251907
2016-09-01

SUPPORT APPARATUS FOR SUPPORTING DRIVE MEANS, AND DRIVING APPARATUS INCORPORATING SUCH SUPPORT APPARATUS

 #23
20160003038
2016-01-07

Determining Gas Content of a Core Sample

 #24
20150337611
2015-11-26

Method, handling unit and stand for acquiring a sample from a seabed top layer

 #25
20150285020
2015-10-08

Coring system and method

 #26
20150176404
2015-06-25

Apparatus and Method for Subsea Testing

 #27
20150136487
2015-05-21

Coring system including tensiometer and method of deciding accurate coring using the same

 #28
20140158434
2014-06-12

Sediment coring apparatus for preventing loss and disturbance of sample in core

 #29
20130341088
2013-12-26

APPARATUS ASSOCIATED WITH SUB-SEA OPERATIONS

 #30
20130206476
2013-08-15

Remotely operable underwater drilling system and drilling method

 #31
20120261191
2012-10-18

Determining methane content of a bottom sample

 #32
20110232138
2011-09-29

Apparatus for collecting marine deposits

 #33
20100300219
2010-12-02

Sub-Sampler

 #34
20090229382
2009-09-17

Sampling method and sampler for gas hydrates by hole bottom freezing

 #35
20090178848
2009-07-16

Subsea Drilling System and Method for Operating the Drilling System

 #36
20090178847
2009-07-16

Method and Device for Subsea Wire Line Drilling

 #37
20080179091
2008-07-31

Suction coring device and method

 #38
20060016621
2006-01-26

Method and system for deep sea drilling