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Ventilation of mines or tunnels Distribution of ventilating currents
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CPC
E21F1/00
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Parent Industries
E
FIXED CONSTRUCTIONS
E21
Mining
E21F
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
Current Industry
E21F1/00
Ventilation of mines or tunnels Distribution of ventilating currents
Sub Industries
E21F1/003
Ventilation of traffic tunnels
E21F1/006
Ventilation at the working face of galleries or tunnels
E21F1/02
Test models
E21F1/04
Air ducts
E21F1/06
Duct connections
E21F1/08
Ventilation arrangements in connection with air ducts
E21F1/085
using compressed gas injectors
E21F1/10
Air doors
E21F1/12
Devices for automatically opening air doors
E21F1/14
Air partitions Air locks
E21F1/145
Air locks
E21F1/16
Shaft covers
E21F1/18
Gravity flow ventilation
Industries
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Patents Grants
last 30 patents
Information
Patent Grant
System and method for stabilizing a mine
Patent number
12,320,257
Issue date
Jun 3, 2025
DRILL TECH DRILLING AND SHORING, INC.
Patrick Hugh Carr
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method of segmented grouting for repairing aquifers in mining area
Patent number
12,312,958
Issue date
May 27, 2025
CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
Yifan Zeng
E21 - EARTH DRILLING MINING
Information
Patent Grant
Arrangement
Patent number
12,312,814
Issue date
May 27, 2025
Sandvik Mining and Construction Oy
Jani Lietonen
E04 - BUILDING
Information
Patent Grant
Ultra-large physical simulation facility for deep engineering disas...
Patent number
12,306,073
Issue date
May 20, 2025
Northeastern University
Xiating Feng
G01 - MEASURING TESTING
Information
Patent Grant
Systems and methods for subterranean energy storage
Patent number
12,270,368
Issue date
Apr 8, 2025
John Dane Rasmussen
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method for monitoring large deformation of tunnel surrounding rock...
Patent number
12,259,227
Issue date
Mar 25, 2025
CHENGDU UNIVERSITY OF TECHNOLOGY
Lubo Meng
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Coal and gas outburst monitoring device
Patent number
12,258,865
Issue date
Mar 25, 2025
HENAN POLYTECHNIC UNIVERSITY
Xu Chen
G08 - SIGNALLING
Information
Patent Grant
Underwater robot for mine flooding rescue
Patent number
12,234,730
Issue date
Feb 25, 2025
Anhui University of Science and Technology
Huawei Jin
E21 - EARTH DRILLING MINING
Information
Patent Grant
Warning device for a mining control module
Patent number
12,234,731
Issue date
Feb 25, 2025
Caterpillar Inc.
Dennis Heidbrink
G08 - SIGNALLING
Information
Patent Grant
Set of lining plates made of radial tires and a method for manufact...
Patent number
12,234,095
Issue date
Feb 25, 2025
RUBBERBRAS LTDA
Lucas Ribeiro
B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information
Patent Grant
Monitoring and warning device for rock burst in coal mine
Patent number
12,234,732
Issue date
Feb 25, 2025
HENAN POLYTECHNIC UNIVERSITY
Hongtu Zhang
E21 - EARTH DRILLING MINING
Information
Patent Grant
Ventilation method for high gas working face based on alternating i...
Patent number
12,221,888
Issue date
Feb 11, 2025
Taiyuan University of Technology
Guorui Feng
E21 - EARTH DRILLING MINING
Information
Patent Grant
Mine cooling and dehumidifying system
Patent number
12,221,889
Issue date
Feb 11, 2025
Shandong University of Science and Technology
Song Xin
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and system for controlling a mining and/or construction machine
Patent number
12,215,998
Issue date
Feb 4, 2025
Epiroc Rock Drills Aktiebolag
Robert Pettersson
G07 - CHECKING-DEVICES
Information
Patent Grant
Automatic microseismic monitoring-intelligent rockburst early warni...
Patent number
12,203,373
Issue date
Jan 21, 2025
INSTITUTE OF ROCK AND SOIL MECHANICS,CHINESE ACADEMY OF SCIENCES
Bingrui Chen
E21 - EARTH DRILLING MINING
Information
Patent Grant
System for monitoring overlying roof rock and coal pillar of gob-si...
Patent number
12,203,374
Issue date
Jan 21, 2025
Yanchun Yin
E21 - EARTH DRILLING MINING
Information
Patent Grant
Self-illuminated power cable with offset energy recovery system, an...
Patent number
12,196,403
Issue date
Jan 14, 2025
NEXANS
Nicolas Poulin
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
High-precision positioning system for underground monorail hoist in...
Patent number
12,187,332
Issue date
Jan 7, 2025
China University of Mining and Technology
Hao Lu
E21 - EARTH DRILLING MINING
Information
Patent Grant
Subway tunnel intelligent monitoring method and system
Patent number
12,179,814
Issue date
Dec 31, 2024
Shenzhen University
Xiangsheng Chen
E21 - EARTH DRILLING MINING
Information
Patent Grant
Track structure with center rail
Patent number
12,179,809
Issue date
Dec 31, 2024
RIINO Inc.
Aaron Kevin Lambert
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Three-dimensional ventilation method and system for mining by 110 c...
Patent number
12,168,932
Issue date
Dec 17, 2024
CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
Jiong Wang
E21 - EARTH DRILLING MINING
Information
Patent Grant
Mining method without coal pillars with roof-cutting and roadway re...
Patent number
12,168,931
Issue date
Dec 17, 2024
CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
Jiong Wang
E21 - EARTH DRILLING MINING
Information
Patent Grant
Interior positioning system for tracking communication devices with...
Patent number
12,164,016
Issue date
Dec 10, 2024
SOLUTIONS AMBRA INC.
Eric L'Heureux
E21 - EARTH DRILLING MINING
Information
Patent Grant
Tunnel boring machine having a device for detecting a content of cr...
Patent number
12,158,071
Issue date
Dec 3, 2024
Herrenknecht Aktiengesellschaft
Jens Brandt
E21 - EARTH DRILLING MINING
Information
Patent Grant
Hanger for mining conveying belt
Patent number
12,158,228
Issue date
Dec 3, 2024
Haskell Addington
E21 - EARTH DRILLING MINING
Information
Patent Grant
Mining system
Patent number
12,146,409
Issue date
Nov 19, 2024
Underground Extraction Technologies Pty Ltd
Michael Mapp
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method for dewatering coal mine goaf by crossing neighboring goaf
Patent number
12,146,410
Issue date
Nov 19, 2024
PING AN COAL MINING ENGINEERING TECHNOLOGY RESEARCH INSTITUTE CO., LTD
Qingfa Liao
E21 - EARTH DRILLING MINING
Information
Patent Grant
Nuclear island base slab of nuclear power plant, manufacturing meth...
Patent number
12,139,868
Issue date
Nov 12, 2024
Shanghai Nuclear Engineering Research & Design Institute Co., LTD.
Shujian Cheng
E21 - EARTH DRILLING MINING
Information
Patent Grant
Perception evaluation method for service performance of highway tun...
Patent number
12,135,257
Issue date
Nov 5, 2024
Research Institute of Highway Ministry of Transport
Xiao Xu
E21 - EARTH DRILLING MINING
Information
Patent Grant
Platform, system and method for simulating critical rock collapse o...
Patent number
12,129,621
Issue date
Oct 29, 2024
Shandong University
Shucai Li
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
CONTINUOUS ACTUATOR DRIVEN MATERIAL HANDLING SYSTEM FOR VERTICAL AN...
Publication number
20250188840
Publication date
Jun 12, 2025
NORDIC MINESTEEL TECHNOLOGIES INC.
ROCKY LYNN WEBB
E21 - EARTH DRILLING MINING
Information
Patent Application
Pumping System
Publication number
20250180041
Publication date
Jun 5, 2025
Weir Minerals Netherlands B.V.
Johannes Stroeken
E21 - EARTH DRILLING MINING
Information
Patent Application
MINER AUTOMATED HARDWARE INSTALLATION SYSTEM AND AUTOMATED BRATTICE...
Publication number
20250179917
Publication date
Jun 5, 2025
The Mosaic Company
Vincent Todd Brooks
E21 - EARTH DRILLING MINING
Information
Patent Application
METHOD FOR RECOVERING RESIDUAL COAL PILLARS BY FREEZING WATER ACCUM...
Publication number
20250163804
Publication date
May 22, 2025
Taiyuan University of Technology
Jun GUO
E21 - EARTH DRILLING MINING
Information
Patent Application
PRIORITY BASED FREQUENCY ALLOCATION IN A COLLISION DETECTION SYSTEM
Publication number
20250131838
Publication date
Apr 24, 2025
Newtrax Technologies Inc.
Martin BOUCHARD
G08 - SIGNALLING
Information
Patent Application
Coal Spontaneous Combustion Downhole Detection System and Method Ba...
Publication number
20250123418
Publication date
Apr 17, 2025
Shandong University of Science and Technology
Xiangming HU
G01 - MEASURING TESTING
Information
Patent Application
STORAGE OF ORGANIC MATERIAL IN BOGS TO REDUCE CO2 IN THE ATMOSPHERE
Publication number
20250100030
Publication date
Mar 27, 2025
JARALA AS
Tom Jacobsen
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information
Patent Application
ROADWAY CONDUIT SYSTEMS AND METHODS
Publication number
20250101870
Publication date
Mar 27, 2025
Electricwaze LLC
Ross Tessien
A62 - LIFE-SAVING FIRE-FIGHTING
Information
Patent Application
COMPOSITION, METHOD AND SYSTEM FOR STABILISING A ROCK MASS
Publication number
20250092626
Publication date
Mar 20, 2025
VACREST PTY LTD
Ethan CORNFORD
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
INTERIOR POSITIONING SYSTEM FOR TRACKING COMMUNICATION DEVICES WITH...
Publication number
20250076443
Publication date
Mar 6, 2025
SOLUTIONS AMBRA INC.
Eric L’HEUREUX
E21 - EARTH DRILLING MINING
Information
Patent Application
MONITORING AND WARNING DEVICE FOR ROCK BURST IN COAL MINE
Publication number
20250067179
Publication date
Feb 27, 2025
Henan Polytechnic University
Hongtu ZHANG
E21 - EARTH DRILLING MINING
Information
Patent Application
COAL AND GAS OUTBURST MONITORING DEVICE
Publication number
20250067180
Publication date
Feb 27, 2025
Henan Polytechnic University
Xu CHEN
G08 - SIGNALLING
Information
Patent Application
CONVERGENCE MONITOR
Publication number
20250052156
Publication date
Feb 13, 2025
R.J. Goldspink Pty Limited
Robert Goldspink
E21 - EARTH DRILLING MINING
Information
Patent Application
TOWING ARRANGEMENT OF A BATTERY-POWERED MINING MACHINE AND A BATTER...
Publication number
20250042208
Publication date
Feb 6, 2025
SANDVIK MINING AND CONSTRUCTION OY
Sami HAIKIO
B60 - VEHICLES IN GENERAL
Information
Patent Application
Dual-Power Hydraulic Roof Bolter
Publication number
20250027413
Publication date
Jan 23, 2025
HEBEI JINGLONG INTELLIGENT EQUIPMENT CO., LTD.
Zilong YAN
B60 - VEHICLES IN GENERAL
Information
Patent Application
MINE COOLING AND DEHUMIDIFYING SYSTEM
Publication number
20250012190
Publication date
Jan 9, 2025
Shandong University of Science and Technology
Song XIN
E21 - EARTH DRILLING MINING
Information
Patent Application
VENTILATION METHOD FOR HIGH GAS WORKING FACE BASED ON ALTERNATING I...
Publication number
20250003337
Publication date
Jan 2, 2025
Taiyuan University of Technology
Guorui FENG
E21 - EARTH DRILLING MINING
Information
Patent Application
MOBILE CHARGING STATION FOR MINING APPLICATIONS
Publication number
20240416782
Publication date
Dec 19, 2024
SANDVIK MINING AND CONSTRUCTION OY
Harri ERIKSSON
B60 - VEHICLES IN GENERAL
Information
Patent Application
Refuge Shelter, Coupling and Method
Publication number
20240410281
Publication date
Dec 12, 2024
STRATA PRODUCTS WORLDWIDE, LLC
David Emerson Maust
E04 - BUILDING
Information
Patent Application
BLAST HOLE MEASUREMENT AND LOGGING
Publication number
20240360754
Publication date
Oct 31, 2024
Four Flags Pty Ltd
Christopher Royce Loveland
F42 - AMMUNITION BLASTING
Information
Patent Application
ROADWAY CONDUIT SYSTEMS AND METHODS
Publication number
20240360759
Publication date
Oct 31, 2024
Electricwaze LLC
Ross Tessien
E21 - EARTH DRILLING MINING
Information
Patent Application
COMBINED PROCESS OF INTEGRATING STOPING-BACKFILLING AND CARBON STORAGE
Publication number
20240360761
Publication date
Oct 31, 2024
TAIYUAN UNIVERSITY OF TECHNOLOGY
Jinwen BAI
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
METHOD FOR BACKFILLING AND RECONSTRUCTING CARBON STORAGE SPACE IN A...
Publication number
20240360762
Publication date
Oct 31, 2024
TAIYUAN UNIVERSITY OF TECHNOLOGY
Guorui FENG
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
SUBWAY TUNNEL INTELLIGENT MONITORING METHOD AND SYSTEM
Publication number
20240351623
Publication date
Oct 24, 2024
Shenzhen University
Xiangsheng CHEN
B61 - RAILWAYS
Information
Patent Application
AUTONOMOUS MINING VEHICLE CONTROL
Publication number
20240344459
Publication date
Oct 17, 2024
SANDVIK MINING AND CONSTRUCTION OY
Jari JASU
E21 - EARTH DRILLING MINING
Information
Patent Application
METHOD FOR DESIGNING PARAMETERS OF AN ADVANCE STRESS RELIEF HOLE IN...
Publication number
20240346215
Publication date
Oct 17, 2024
Institute of Rock and Soil Mechanics, Chinese Academy of Sciences
Shili QIU
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
OPERATOR CAB FOR UNDERGROUND MINING MACHINES WITH UTILITY COMPARTMENT
Publication number
20240328114
Publication date
Oct 3, 2024
Caterpillar Underground Mining Pty. Ltd.
Manoj KUMAR
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
ULTRA-LARGE PHYSICAL SIMULATION FACILITY FOR DEEP ENGINEERING DISAS...
Publication number
20240319047
Publication date
Sep 26, 2024
Northeastern University
Xiating FENG
G01 - MEASURING TESTING
Information
Patent Application
ROTARY BORING MINING MACHINE INERTIAL STEERING SYSTEM
Publication number
20240318552
Publication date
Sep 26, 2024
The Mosaic Company
Roy W. Tivas
E21 - EARTH DRILLING MINING
Information
Patent Application
SYSTEMS AND METHODS FOR AUTOMATED CONTROL OF A BEAM STAGELOADER BOO...
Publication number
20240308774
Publication date
Sep 19, 2024
Joy Global Underground Mining LLC
Benjamin John Robert Lepre
E21 - EARTH DRILLING MINING