for brown or hard coal

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E21C41/18

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EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C41/00Methods of underground or surface mining Lay-outs therefor

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E21C41/18for brown or hard coal

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Surrounding rock stability control method adapted for coal mining a...
- Patent number 12,221,887
- Issue date Feb 11, 2025
- CHINA UNIVERSITY OF MINING AND TECHNOLOGY
- 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
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 and system for coalbed permeability-enhancement induced by p...
- Patent number 12,098,638
- Issue date Sep 24, 2024
- Taiyuan University of Technology
- Zijun Feng
- E21 - EARTH DRILLING MINING
Information Patent Grant
I-patterned filling method for initial stage of coal mining based o...
- Patent number 12,098,637
- Issue date Sep 24, 2024
- Taiyuan University of Technology
- Guorui Feng
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and device for determining development status of separation...
- Patent number 12,091,972
- Issue date Sep 17, 2024
- CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
- Yifan Zeng
- E21 - EARTH DRILLING MINING
Information Patent Grant
Isolated overburden grouting filling method for coal gangue undergr...
- Patent number 12,044,125
- Issue date Jul 23, 2024
- China University of Mining and Technology
- Dayang Xuan
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method of no-pillar mining with gob-entry retaining adapted for ful...
- Patent number 12,037,905
- Issue date Jul 16, 2024
- CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
- Jiong Wang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drilling device for coal mining
- Patent number 12,018,534
- Issue date Jun 25, 2024
- Shandong University of Science and Technology
- Weiyao Guo
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cutting assembly for longwall mining system
- Patent number 12,006,824
- Issue date Jun 11, 2024
- Joy Global Underground Mining LLC
- Edward Niederriter
- E21 - EARTH DRILLING MINING
Information Patent Grant
Dendritic reverse underground mining method for thin coal seam at e...
- Patent number 11,994,027
- Issue date May 28, 2024
- China University of Mining and Technology
- Shuzhao Chen
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hole protection system and method for coal seam slotting and fractu...
- Patent number 11,970,945
- Issue date Apr 30, 2024
- Hancheng Zaozhuang Industrial Co., Ltd.
- Xiaoyan Sun
- E21 - EARTH DRILLING MINING
Information Patent Grant
Multi-energy complementary system for co-associated abandoned mine...
- Patent number 11,965,419
- Issue date Apr 23, 2024
- ANHUI UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Tong Zhang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and device for carrying out grouting between adjacent gatero...
- Patent number 11,959,383
- Issue date Apr 16, 2024
- Taiyuan University of Technology
- Guorui Feng
- E21 - EARTH DRILLING MINING
Information Patent Grant
Collaborative erosion-control method of releasing-splitting-support...
- Patent number 11,834,949
- Issue date Dec 5, 2023
- Shandong University of Science and Technology
- Weiyao Guo
- E21 - EARTH DRILLING MINING
Information Patent Grant
Underground mining method for unexploited coal in boundary open-pit...
- Patent number 11,821,314
- Issue date Nov 21, 2023
- China University of Mining and Technology
- Shuzhao Chen
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Kind of no-pillar and gob-side entry retaining mining and construct...
- Patent number 11,746,654
- Issue date Sep 5, 2023
- Shandong University of Science and Technology
- Qihua Ma
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mining system
- Patent number 11,746,653
- Issue date Sep 5, 2023
- Underground Extraction Technologies Pty Ltd
- Michael Mapp
- E21 - EARTH DRILLING MINING
Information Patent Grant
Wireless monitoring system for coal-gangue mixing ratio based on no...
- Patent number 11,592,410
- Issue date Feb 28, 2023
- Shanxi Datong University
- Lijuan Dong
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for coal mining without reserving coal pillar and tunneling...
- Patent number 11,578,598
- Issue date Feb 14, 2023
- Beijing Zhongkuang Innovation Alliance Energy Environment Science Academy
- Manchao He
- E21 - EARTH DRILLING MINING
Information Patent Grant
Underground longwall mining method
- Patent number 11,578,597
- Issue date Feb 14, 2023
- Beijing Zhongkuang Innovation Alliance Energy Environment Science Academy
- Manchao He
- E21 - EARTH DRILLING MINING
Information Patent Grant
Physical simulation test method for detecting position of ponding g...
- Patent number 11,473,427
- Issue date Oct 18, 2022
- Taiyuan University of Technology
- Guorui Feng
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Automatic coal mining machine and fluidized coal mining method
- Patent number 11,391,151
- Issue date Jul 19, 2022
- CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
- Yang Ju
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Method for recovering room-type coal pillars by cemented filling of...
- Patent number 11,339,658
- Issue date May 24, 2022
- China University of Mining and Technology
- Nan Zhou
- E21 - EARTH DRILLING MINING
Information Patent Grant
Internally injected replacement support room-type coal pillar recov...
- Patent number 11,313,226
- Issue date Apr 26, 2022
- China University of Mining and Technology
- Nan Zhou
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Mine exploitation based on stoping, separation and filling control
- Patent number 11,143,025
- Issue date Oct 12, 2021
- China University of Mining and Technology
- Jixiong Zhang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Filling mining method for fully-mechanized top coal caving working...
- Patent number 11,047,236
- Issue date Jun 29, 2021
- Shandong University of Science and Technology
- Shaojie Chen
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method of recovering room-and-pillar coal pillar by using external...
- Patent number 11,021,954
- Issue date Jun 1, 2021
- China University of Mining and Technology
- Nan Zhou
- E21 - EARTH DRILLING MINING
Information Patent Grant
Equipment system for no-roadway no-coal-pillar retained roadway min...
- Patent number 11,008,860
- Issue date May 18, 2021
- Manchao HE
- Manchao He
- E21 - EARTH DRILLING MINING
Information Patent Grant
Simulation test method for gas extraction from tectonically-deforme...
- Patent number 10,995,572
- Issue date May 4, 2021
- China University of Mining and Technology
- Shuxun Sang
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
CUTTING ASSEMBLY FOR LONGWALL MINING SYSTEM
- Publication number 20240328315
- Publication date Oct 3, 2024
- Joy Global Underground Mining LLC
- Edward Niederriter
- E21 - EARTH DRILLING MINING
Information Patent Application
Tunnel Tunneling System
- Publication number 20240240560
- Publication date Jul 18, 2024
- CCTEG TAIYUAN RESEARCH INSTITUTE
- Hong Wang
- E21 - EARTH DRILLING MINING
Information Patent Application
I-PATTERNED FILLING METHOD FOR INITIAL STAGE OF COAL MINING BASED O...
- Publication number 20240209734
- Publication date Jun 27, 2024
- Taiyuan University of Technology
- Guorui FENG
- E21 - EARTH DRILLING MINING
Information Patent Application
Tunneling and Anchoring Machine and Tunneling System
- Publication number 20240200451
- Publication date Jun 20, 2024
- CCTEG TAIYUAN RESEARCH INSTITUTE
- Hong Wang
- E21 - EARTH DRILLING MINING
Information Patent Application
COLLABORATIVE EROSION-CONTROL METHOD OF RELEASING-SPLITTING -SUPPOR...
- Publication number 20230340878
- Publication date Oct 26, 2023
- Shandong University of Science and Technology
- Weiyao GUO
- E21 - EARTH DRILLING MINING
Information Patent Application
HOLE PROTECTION SYSTEM AND METHOD FOR COAL SEAM SLOTTING AND FRACTU...
- Publication number 20230313682
- Publication date Oct 5, 2023
- Hancheng Zaozhuang Industrial Co., Ltd.
- Xiaoyan SUN
- E21 - EARTH DRILLING MINING
Information Patent Application
Mining System
- Publication number 20230265758
- Publication date Aug 24, 2023
- Underground Extraction Technologies Pty Ltd
- Michael Mapp
- E21 - EARTH DRILLING MINING
Information Patent Application
Mining Method Without Coal Pillars With Roof-Cutting And Roadway Re...
- Publication number 20230258083
- Publication date Aug 17, 2023
- CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
- Jiong Wang
- E21 - EARTH DRILLING MINING
Information Patent Application
UNDERGROUND MINING METHOD FOR UNEXPLOITED COAL IN BOUNDARY OPEN-PIT...
- Publication number 20230235667
- Publication date Jul 27, 2023
- China University of Mining and Technology
- Shuzhao CHEN
- E21 - EARTH DRILLING MINING
Information Patent Application
MULTI-ENERGY COMPLEMENTARY SYSTEM FOR CO-ASSOCIATED ABANDONED MINE...
- Publication number 20230203947
- Publication date Jun 29, 2023
- Anhui University of Science and Technology
- Tong ZHANG
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD FOR MONITORING HYDRAULIC FRACTURING RANGE OF SURFACE VERTICA...
- Publication number 20230140874
- Publication date May 11, 2023
- UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING
- Sitao Zhu
- E21 - EARTH DRILLING MINING
Information Patent Application
A Kind of No-Pillar and Gob-Side Entry Retaining Mining and Constru...
- Publication number 20230103613
- Publication date Apr 6, 2023
- Shandong University of Science and Technology
- Qihua MA
- E21 - EARTH DRILLING MINING
Information Patent Application
WIRELESS MONITORING SYSTEM FOR COAL-GANGUE MIXING RATIO BASED ON NO...
- Publication number 20230064933
- Publication date Mar 2, 2023
- Shanxi Datong University
- Lijuan DONG
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SURROUNDING ROCK STABILITY CONTROL METHOD ADAPTED FOR COAL MINING A...
- Publication number 20230063143
- Publication date Mar 2, 2023
- CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
- Jiong WANG
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND DEVICE FOR CARRYING OUT GROUTING BETWEEN ADJACENT GATERO...
- Publication number 20220282619
- Publication date Sep 8, 2022
- Taiyuan University of Technology
- Guorui FENG
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD OF NO-PILLAR MINING WITH GOB-ENTRY RETAINING ADAPTED FOR FUL...
- Publication number 20220275726
- Publication date Sep 1, 2022
- CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
- Jiong WANG
- E21 - EARTH DRILLING MINING
Information Patent Application
DESIGN METHOD FOR MINE WITHOUT LEAVING COAL PILLAR AND WITHOUT ROAD...
- Publication number 20220251952
- Publication date Aug 11, 2022
- Beijing Zhongkuang Innovation Alliance Energy Environment Science Academy
- Manchao HE
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD FOR COAL MINING WITHOUT RESERVING COAL PILLAR AND TUNNELING...
- Publication number 20220251953
- Publication date Aug 11, 2022
- Beijing Zhongkuang Innovation Alliance Energy Environment Science Academy
- Manchao HE
- E21 - EARTH DRILLING MINING
Information Patent Application
DENDRITIC REVERSE UNDERGROUND MINING METHOD FOR THIN COAL SEAM AT E...
- Publication number 20220243590
- Publication date Aug 4, 2022
- CHINA UNIVERSITY OF MINING AND TECHNOLOGY
- Shuzhao CHEN
- E21 - EARTH DRILLING MINING
Information Patent Application
DEEP LOW-PERMEABILITY HIGH GASSY SEAM DRILLING-SLITTING-SEALING-FRA...
- Publication number 20220213773
- Publication date Jul 7, 2022
- SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Gang WANG
- E21 - EARTH DRILLING MINING
Information Patent Application
CUTTING ASSEMBLY FOR LONGWALL MINING SYSTEM
- Publication number 20220154575
- Publication date May 19, 2022
- Joy Global Underground Mining LLC
- Edward Niederriter
- E21 - EARTH DRILLING MINING
Information Patent Application
SYNERGISTIC MINING METHOD FOR UNDERGROUND MINING, SEPARATION AND FI...
- Publication number 20210404337
- Publication date Dec 30, 2021
- CHINA UNIVERSITY OF MINING AND TECHNOLOGY
- Nong ZHANG
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD FOR RECOVERING ROOM-TYPE COAL PILLARS BY CEMENTED FILLING OF...
- Publication number 20210355826
- Publication date Nov 18, 2021
- CHINA UNIVERSITY OF MINING AND TECHNOLOGY
- Nan Zhou
- E21 - EARTH DRILLING MINING
Information Patent Application
AUTOMATIC COAL MINING MACHINE AND FLUIDIZED COAL MINING METHOD
- Publication number 20210340870
- Publication date Nov 4, 2021
- CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
- Yang JU
- E21 - EARTH DRILLING MINING
Information Patent Application
Mining System
- Publication number 20210324738
- Publication date Oct 21, 2021
- Underground Extraction Technologies Pty Ltd
- Michael Mapp
- E21 - EARTH DRILLING MINING
Information Patent Application
INTELLIGENT DETECTION AND RECOGNITION SYSTEM AND METHOD FOR COAL-RO...
- Publication number 20210324737
- Publication date Oct 21, 2021
- China University of Mining and Technology-Beijing
- Xianlei XU
- E21 - EARTH DRILLING MINING
Information Patent Application
ZERO-GANGUE-DISCHARGE SHORT-WALL FACE PILLAR-FREE MINING METHOD
- Publication number 20210310356
- Publication date Oct 7, 2021
- CHINA UNIVERSITY OF MINING AND TECHNOLOGY
- Nong ZHANG
- E21 - EARTH DRILLING MINING
Information Patent Application
Method of Drilling Pathways to Mine for Solid Natural Resources fro...
- Publication number 20210180451
- Publication date Jun 17, 2021
- Jimmy Lynn Davis
- E21 - EARTH DRILLING MINING
Information Patent Application
MINE EXPLOITATION, SEPARATION AND FILING, AND X EXPLOITATION
- Publication number 20210148228
- Publication date May 20, 2021
- CHINA UNIVERSITY OF MINING AND TECHNOLOGY
- Jixiong ZHANG
- E21 - EARTH DRILLING MINING
Information Patent Application
FILLING MINING METHOD FOR FULLY-MECHANIZED TOP COAL CAVING WORKING...
- Publication number 20210040850
- Publication date Feb 11, 2021
- Shandong University of Science and Technology
- Shaojie CHEN
- E21 - EARTH DRILLING MINING

for brown or hard coal

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Surrounding rock stability control method adapted for coal mining a...

Mining method without coal pillars with roof-cutting and roadway re...

Mining system

Method and system for coalbed permeability-enhancement induced by p...

I-patterned filling method for initial stage of coal mining based o...

Method and device for determining development status of separation...

Isolated overburden grouting filling method for coal gangue undergr...

Method of no-pillar mining with gob-entry retaining adapted for ful...

Drilling device for coal mining

Cutting assembly for longwall mining system

Dendritic reverse underground mining method for thin coal seam at e...

Hole protection system and method for coal seam slotting and fractu...

Multi-energy complementary system for co-associated abandoned mine...

Method and device for carrying out grouting between adjacent gatero...

Collaborative erosion-control method of releasing-splitting-support...

Underground mining method for unexploited coal in boundary open-pit...

Kind of no-pillar and gob-side entry retaining mining and construct...

Mining system

Wireless monitoring system for coal-gangue mixing ratio based on no...

Method for coal mining without reserving coal pillar and tunneling...

Underground longwall mining method

Physical simulation test method for detecting position of ponding g...

Automatic coal mining machine and fluidized coal mining method

Method for recovering room-type coal pillars by cemented filling of...

Internally injected replacement support room-type coal pillar recov...

Mine exploitation based on stoping, separation and filling control

Filling mining method for fully-mechanized top coal caving working...

Method of recovering room-and-pillar coal pillar by using external...

Equipment system for no-roadway no-coal-pillar retained roadway min...

Simulation test method for gas extraction from tectonically-deforme...

Patents Applicationslast 30 patents

CUTTING ASSEMBLY FOR LONGWALL MINING SYSTEM

Tunnel Tunneling System

I-PATTERNED FILLING METHOD FOR INITIAL STAGE OF COAL MINING BASED O...

Tunneling and Anchoring Machine and Tunneling System

COLLABORATIVE EROSION-CONTROL METHOD OF RELEASING-SPLITTING -SUPPOR...

HOLE PROTECTION SYSTEM AND METHOD FOR COAL SEAM SLOTTING AND FRACTU...

Mining System

Mining Method Without Coal Pillars With Roof-Cutting And Roadway Re...

UNDERGROUND MINING METHOD FOR UNEXPLOITED COAL IN BOUNDARY OPEN-PIT...

MULTI-ENERGY COMPLEMENTARY SYSTEM FOR CO-ASSOCIATED ABANDONED MINE...

METHOD FOR MONITORING HYDRAULIC FRACTURING RANGE OF SURFACE VERTICA...

A Kind of No-Pillar and Gob-Side Entry Retaining Mining and Constru...

WIRELESS MONITORING SYSTEM FOR COAL-GANGUE MIXING RATIO BASED ON NO...

SURROUNDING ROCK STABILITY CONTROL METHOD ADAPTED FOR COAL MINING A...

METHOD AND DEVICE FOR CARRYING OUT GROUTING BETWEEN ADJACENT GATERO...

METHOD OF NO-PILLAR MINING WITH GOB-ENTRY RETAINING ADAPTED FOR FUL...

DESIGN METHOD FOR MINE WITHOUT LEAVING COAL PILLAR AND WITHOUT ROAD...

METHOD FOR COAL MINING WITHOUT RESERVING COAL PILLAR AND TUNNELING...

DENDRITIC REVERSE UNDERGROUND MINING METHOD FOR THIN COAL SEAM AT E...

DEEP LOW-PERMEABILITY HIGH GASSY SEAM DRILLING-SLITTING-SEALING-FRA...

CUTTING ASSEMBLY FOR LONGWALL MINING SYSTEM

SYNERGISTIC MINING METHOD FOR UNDERGROUND MINING, SEPARATION AND FI...

METHOD FOR RECOVERING ROOM-TYPE COAL PILLARS BY CEMENTED FILLING OF...

AUTOMATIC COAL MINING MACHINE AND FLUIDIZED COAL MINING METHOD

Mining System

INTELLIGENT DETECTION AND RECOGNITION SYSTEM AND METHOD FOR COAL-RO...

ZERO-GANGUE-DISCHARGE SHORT-WALL FACE PILLAR-FREE MINING METHOD

Method of Drilling Pathways to Mine for Solid Natural Resources fro...

MINE EXPLOITATION, SEPARATION AND FILING, AND X EXPLOITATION

FILLING MINING METHOD FOR FULLY-MECHANIZED TOP COAL CAVING WORKING...