ClassID:

136320

E21F17/18 - CPC Classification

Classification description:

Methods or devices for use in mines or tunnels, not covered elsewhere Special adaptations of signalling or alarm devices

Sub-classes:
Recent Application in this class:
#1
20260103984
2026-04-16

DOUBLE-END CHAIN TENSION FORCE CONTROL SYSTEM FOR CROSS SIDE-DUMPING TYPE FLIGHT CONVEYOR AND CONTROL METHOD THEREFOR

#2
20260098473
2026-04-09

SENSOR SYSTEM AND A METHOD FOR A MINING VEHICLE

#3
20260071544
2026-03-12

EARLY WARNING AND EMERGENCY DEVICE FOR SUDDEN STRESS CHANGE IN SURROUNDING ROCK AND METHOD OF USE

#4
20260063036
2026-03-05

ADAPTER FOR ROCK OR BUILDING ANCHOR SYSTEM

#5
20260009641
2026-01-08

SYSTEM FOR AUTOMATED MEASUREMENT OF LEVELNESS OF END SURFACE OF TUNNEL RING

#6
20260002635
2026-01-01

SENSOR APPARATUS FOR USE IN A TUNNEL

#7
20250361807
2025-11-27

WEAR INDICATOR

#8
20250283409
2025-09-11

DIRECTIONAL INDICATOR DEVICE

#9
20250277451
2025-09-04

Method for Detecting Stress State of Roadway Surrounding Rocks Based on Three-Dimensional Electric Potential Response

#10
20250274722
2025-08-28

Inventory System for Mines

#11
20250131838
2025-04-24

PRIORITY BASED FREQUENCY ALLOCATION IN A COLLISION DETECTION SYSTEM

#12
20250123418
2025-04-17

Coal Spontaneous Combustion Downhole Detection System and Method Based on Self-Potential Method

#13
20250076443
2025-03-06

INTERIOR POSITIONING SYSTEM FOR TRACKING COMMUNICATION DEVICES WITHIN A REMOTE LOCATION, AND METHOD THEREFORE

#14
20250067179
2025-02-27

MONITORING AND WARNING DEVICE FOR ROCK BURST IN COAL MINE

#15
20250027413
2025-01-23

Dual-Power Hydraulic Roof Bolter

#16
20240360754
2024-10-31

BLAST HOLE MEASUREMENT AND LOGGING

#17
20240351623
2024-10-24

Subway tunnel intelligent monitoring method and system

#18
20240159150
2024-05-16

EVALUATION METHOD OF DUCTILITY OF GROUTED ROCK MASS FOR ADVANCED RENOVATION OF WATER-SAND MIXTURE INRUSH AREA

#19
20240142421
2024-05-02

TEST METHOD FOR GAS AND TEMPERATURE DISTRIBUTION IN A GOAF

#20
20240142420
2024-05-02

TEST DEVICE FOR GAS AND TEMPERATURE DISTRIBUTION IN A GOAF

#21
20240141788
2024-05-02

SYSTEMS AND METHODS FOR MEASURING MINE TUNNEL ENVIRONMENTAL INFORMATION

#22
20240110479
2024-04-04

MULTI-FACTOR QUANTITATIVE ANALYSIS METHOD FOR DEFORMATION OF NEIGHBORHOOD TUNNEL

#23
20240093608
2024-03-21

TUNNEL AUTOMATIC MONITORING AND MEASUREMENT EQUIPMENT AND METHOD BASED ON FIXED-POINT TOUR MEASUREMENT

#24
20240092438
2024-03-21

TUNNEL OPERATION ROBOT

#25
20240084702
2024-03-14

Method for Water and Moisture Management for a Mining Operation

#26
20240068359
2024-02-29

Method for measuring gas pressure of close-distance seam group simultaneously

#27
20240026788
2024-01-25

Hydraulic Support with Quick Response Function for Coal Wall Spalling

#28
20230331263
2023-10-19

Low-energy-consumption grading and positioning method for coal mine auxiliary transportation vehicle and system thereof

#29
20230258087
2023-08-17

Method for real-time strength estimation, grading, and early warning of rock mass in tunnel boring machine (TBM) tunneling

#30
20230243260
2023-08-03

ROOF SUPPORT INCLUDING EXTENDABLE LINKS

#31
20230167741
2023-06-01

INTELLIGENT TUNNEL SEGMENT MONITORING SYSTEM

#32
20230140625
2023-05-04

Tunnel boring machine having a device for detecting a content of critical gas

#33
20230128787
2023-04-27

Automatic microseismic monitoring-intelligent rockburst early warning integrated system and method for tunnel boring machine (TBM)-based construction

#34
20230059714
2023-02-23

ROCK-PIERCING FLEXIBLE ROCK DRILLING ROBOT AND ROCK BREAKING METHOD

#35
20220403738
2022-12-22

Cable handling system for longwall mining machines

#36
20220380133
2022-12-01

Sensing method for collecting multivariate information at a goaf side based on chutes of scraper conveyors

#37
20220372877
2022-11-24

Warning device for a mining control module

#38
20220308149
2022-09-29

Interior positioning system for tracking communication devices within a remote location, and method therefore

#39
20220251945
2022-08-11

System and method of transient electromagnetic advanced detection

#40
20220235658
2022-07-28

Travelling-type tunnel hard-rock micro-damage cutting equipment and construction method associated therewith

#41
20220154923
2022-05-19

Low current self-illuminated power cable which retains flexibility, and method of manufacturing same

#42
20220136391
2022-05-05

Protecting trolley and construction method of rock burst prewarning protection system in non-contact tunnel construction

#43
20220082020
2022-03-17

Drilling device for surveying front rock-mass intactness of tunnel face for tunnel constructed by TBM and method using the same

#44
20210381995
2021-12-09

Ceramic smart impact panel

#45
20210262345
2021-08-26

Interference protection device and method for hydraulic support and cutting part of shearer

#46
20210262336
2021-08-26

Wellbore inspection system and method for ultra-deep vertical shaft

#47
20210254464
2021-08-19

Impact feedback system for longwall shearer operator

#48
20210189870
2021-06-24

System and method for monitoring water inrush

#49
20210173392
2021-06-10

Method and system for controlling communication of a mining and/or construction machine

#50
20210164348
2021-06-03

Method and apparatus for preventing accident in tunnel

#51
20210134135
2021-05-06

Multi-system, multi-parameter, integrated, comprehensive early warning method and system for coal and rock dynamic disaster

#52
20210108723
2021-04-15

Position monitoring of a gasket between tunnel segments

#53
20210017861
2021-01-21

Method for inspecting service performance of tunnel lining based on defect characteristics thereof

#54
20200378258
2020-12-03

Method for classifying phreatic leakage disaster level in shallow coal seam mining

#55
20200340335
2020-10-29

System for extracting gas from tectonically-deformed coal seam in-situ by depressurizing horizontal well cavity

#56
20200208518
2020-07-02

Systems and methods for detection of underground voids

#57
20200182718
2020-06-11

Method for calculating earth pressure load on a tunnel

#58
20200173282
2020-06-04

Hose for providing an emergency fresh air supply to an underground vault after an explosion

#59
20200116023
2020-04-16

Device and method for measuring dynamic evolution of three-dimensional disturbed stress under mining disturbance

#60
20200095863
2020-03-26

Roof support including extendable links

#61
20200091967
2020-03-19

COAL TRACKER

#62
20200053627
2020-02-13

SYSTEM FOR TRANSMITTING DATA FROM AN UNDERGROUND VEHICLE

#63
20200040729
2020-02-06

Inclined shaft continuous feeding system for solid filling materials

#64
20200003919
2020-01-02

Blast reconciliation for mines

#65
20190360334
2019-11-28

Intelligent and flexible steel arch protection device for rockfall and collapse of tunnels

#66
20190330984
2019-10-31

Loaded-to-frame detection equipment and method for backfill grouting of shield tunnel

#67
20190323348
2019-10-24

Horizon monitoring for longwall system

#68
20190156539
2019-05-23

Hazard point marking method and system

#69
20180355720
2018-12-13

Horizon monitoring for longwall system

#70
20180206175
2018-07-19

System for transmitting data from an underground vehicle

#71
20170351264
2017-12-07

Zone passage control in worksite

#72
20170315264
2017-11-02

Rock movement sensor for use during blasting

#73
20170314395
2017-11-02

Horizon monitoring for longwall system

#74
20170218746
2017-08-03

System and method for remote monitoring of drilling equipment

#75
20170211744
2017-07-27

Anchoring system and methods

#76
20170122822
2017-05-04

Multipoint coal and rock mass stress real-time monitoring device and method

#77
20170120816
2017-05-04

Context-Aware Collision Avoidance Devices and Collision Avoidance System Comprising the Same

#78
20170084171
2017-03-23

Stabilization based path planning

#79
20170067342
2017-03-09

SYSTEM AND METHOD FOR MONITORING UNDERGROUND WORKSITE

#80
20160369630
2016-12-22

Proximity detection systems and methods

#81
20160311625
2016-10-27

Solid-filling coal mining feeding and conveying monitoring system

#82
20160232622
2016-08-11

Mine management system

#83
20160102551
2016-04-14

Detecting sump depth of a miner

#84
20160061035
2016-03-03

Horizon monitoring for longwall system

#85
20150308270
2015-10-29

Proximity awareness safety device and system

#86
20150269789
2015-09-24

Operation management device of self-propelling mining equipment

#87
20150097412
2015-04-09

DETERMING AN ACTIVITY OF A MOBILE MACHINE

#88
20150061880
2015-03-05

Proximity detection systems and methods

#89
20150061351
2015-03-05

Detecting sump depth of a miner

#90
20150061350
2015-03-05

SHEARER ANTI-COLLISION

#91
20140358382
2014-12-04

Operation control system for mining machine and operation control method for mining machine

#92
20140253292
2014-09-11

Method and system for increasing the operational safety of mobile machines in aboveground or underground mining operations for the extraction of minerals by utilizing the RFID technology

#93
20140019047
2014-01-16

Multi-information coupling prediction method of coal and gas outburst danger

#94
20130269453
2013-10-17

METHOD AND SYSTEM FOR DETERMINING STRUCTURAL CHANGES IN A LONGWALL MINE

#95
20130197737
2013-08-01

System and method for remote monitoring of drilling equipment

#96
20130194079
2013-08-01

Method for locating persons and/or mobile machines in mine caverns using RFID technology, and longwall face extraction installation for carrying out the method

#97
20130055948
2013-03-07

Guide apparatus

#98
20120320997
2012-12-20

Network infrastructure for mobile machines which can be used in areas at risk of explosion

#99
20120247865
2012-10-04

PORTABLE SEISMIC COMMUNICATION DEVICE

#100
20120235828
2012-09-20

SIGNAL DEVICE

#101
20120127924
2012-05-24

Tracking and monitoring system for opencast mines

#102
20120082005
2012-04-05

Miner acoustic communication and location system

#103
20120074759
2012-03-29

Safety device for the movable excavation devices in an underground longwall mine

#104
20120008533
2012-01-12

Network for Confined Hazardous or Other Extreme Environments

#105
20110309931
2011-12-22

Low-power wirelessly-linked RFID tracking system

#106
20110205033
2011-08-25

Wireless information and safety system for mines

#107
20110053624
2011-03-03

Method, system and media for wireless process control of mobile equipment

#108
20100221071
2010-09-02

REMOTELY CONTROLLED MINING MACHINES, CONTROL SYSTEMS, AND RELATED METHODS

#109
20100135116
2010-06-03

Miner acoustic communication and location system

#110
20100096904
2010-04-22

Method of controlling the conveyance of product in underground mining operations

#111
20090326734
2009-12-31

Worksite avoidance system

#112
20090316530
2009-12-24

BI-DIRECTIONAL SEISMIC COMMUNICATION SYSTEM AND METHOD

#113
20080122634
2008-05-29

Mine safety system

#114
20080076383
2008-03-27

Network for confined hazardous or other extreme environments

#115
20070264967
2007-11-15

Personal locator beacon

#116
20050104737
2005-05-19

Safety system

#117
18609556
2024-11-05

Perception evaluation method for service performance of highway tunnel lining structure

#118
18596373
2024-09-17

Method and device for determining development status of separation layer of coal mine

#119
18538253
2024-07-16

Method for monitoring and analyzing large tunnel machines based on automatic collection of big data

#120
18446600
2024-09-17

Method for monitoring resilience of shield tunnel based on multi-source heterogeneous data

#121
18120626
2023-11-21

Coal or rock dynamic disaster warning apparatus and method

#122
17984859
2023-05-30

Mine dust real-time detection system based on double-photo acoustic spectrometry and detection method

#123
16582937
2020-08-18

Climate change reducing malodorous composition of matter and warning system

#124
15686593
2018-08-21

Real-time water-level monitoring system for dumping site of open-pit coal mine, and methods of establishment and use of the same