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CPC
E21F15/04
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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
E21F15/00
Methods or devices for placing filling-up materials in underground workings
Current Industry
E21F15/04
Stowing mats Goaf wire netting Partition walls
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Patents Grants
last 30 patents
Information
Patent Grant
Method and an apparatus for creating a void for underground mining
Patent number
11,111,787
Issue date
Sep 7, 2021
Moore Management Company Pty Ltd
Gregory Moore
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method for mining ultra-thick coal seam by utilizing goaf solid bac...
Patent number
10,876,403
Issue date
Dec 29, 2020
Xiexing Miao
E21 - EARTH DRILLING MINING
Information
Patent Grant
Roadway forming method by expanding excavating and filling gangue p...
Patent number
10,787,906
Issue date
Sep 29, 2020
Shandong University of Science and Technology
Zhongping Guo
E21 - EARTH DRILLING MINING
Information
Patent Grant
Barricade wall
Patent number
10,577,932
Issue date
Mar 3, 2020
DKR MANUFACTURING INC.
Roland Lavoie
E21 - EARTH DRILLING MINING
Information
Patent Grant
Stope fill barrier
Patent number
9,115,582
Issue date
Aug 25, 2015
Jollan Kingsley
E21 - EARTH DRILLING MINING
Information
Patent Grant
Mine seal with electrically non-conductive ties
Patent number
8,444,108
Issue date
May 21, 2013
Kennedy Metal Products & Buildings, Inc.
William R. Kennedy
E21 - EARTH DRILLING MINING
Information
Patent Grant
Bulk backfill in situ liner for hard rock environment
Patent number
5,533,833
Issue date
Jul 9, 1996
Lombardi; John
John A. Lombardi
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information
Patent Grant
Form for making a permanent concrete mine stopping
Patent number
5,167,474
Issue date
Dec 1, 1992
John Kennedy Metal Products & Buildings
John M. Kennedy
E21 - EARTH DRILLING MINING
Information
Patent Grant
Inflatable envelope systems for use in excavations
Patent number
4,056,939
Issue date
Nov 8, 1977
Alberto M. Alvarez-Calderon F.
E21 - EARTH DRILLING MINING
Information
Patent Grant
Mine roof support equipment
Patent number
3,943,723
Issue date
Mar 16, 1976
Coal Industry (Patents) Limited
Frank Evans
E21 - EARTH DRILLING MINING
Information
Patent Grant
Inflatable envelope systems for use in excavations
Patent number
3,937,025
Issue date
Feb 10, 1976
Alberto M. Alvarez-Calderon F.
E21 - EARTH DRILLING MINING
Information
Patent Grant
3618325
Patent number
3,618,325
Issue date
Nov 9, 1971
E21 - EARTH DRILLING MINING
Information
Patent Grant
2877304
Patent number
2,877,304
Issue date
Mar 10, 1959
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
BULKHEAD FOR FACILITATING BACKFILLING OF A STOPE UPON MINING THEREOF
Publication number
20230167740
Publication date
Jun 1, 2023
INNOVATIVE BLASTING TECHNOLOGIES PTY LTD
Jollan KINGSLEY
E21 - EARTH DRILLING MINING
Information
Patent Application
METHOD OF FORMING A ROADWAY BY FILLING GANGUE PASTE DURING WIDE-ROA...
Publication number
20200040728
Publication date
Feb 6, 2020
Shandong University of Science and Technology
Zhongping GUO
E21 - EARTH DRILLING MINING
Information
Patent Application
BARRICADE WALL
Publication number
20180347360
Publication date
Dec 6, 2018
Roland Lavoie
E21 - EARTH DRILLING MINING
Information
Patent Application
METHOD FOR DESIGNING SUPPORTING PARAMETERS OF TRANSITION SUPPORT FO...
Publication number
20180314770
Publication date
Nov 1, 2018
CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Jixiong ZHANG
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Stope Fill Barrier
Publication number
20140023444
Publication date
Jan 23, 2014
Jollan Kingsley
E21 - EARTH DRILLING MINING
Information
Patent Application
MINE SEAL WITH ELECTRICALLY NON-CONDUCTIVE TIES
Publication number
20130251454
Publication date
Sep 26, 2013
KENNEDY METAL PRODUCTS & BUILDINGS, INC.
William R. Kennedy
E21 - EARTH DRILLING MINING
Information
Patent Application
Mine Seal With Electrically Non-Conductive Ties
Publication number
20090279955
Publication date
Nov 12, 2009
KENNEDY METAL PRODUCTS & BUILDINGS, INC.
William R. Kennedy
E21 - EARTH DRILLING MINING