Patents-Review.com
ClassID:

136305 ⎘

E21F15/06 - CPC Classification

Classification description:

Methods or devices for placing filling-up materials in underground workings Filling-up mechanically

Recent Application in this class:
#1
20240125235
2024-04-18

System and method for stabilizing a mine

 #2
20240102343
2024-03-28

Isolated overburden grouting filling method for coal gangue underground emission reduction

 #3
20240093607
2024-03-21

Plug for a Void, System and Method

 #4
20230407746
2023-12-21

Method for filling deformable karst cave

 #5
20230383653
2023-11-30

COAL-BASED SOLID WASTE TRANSPORT AND FILLING INTEGRATED MACHINE MINING SYSTEM AND METHOD

 #6
20220389817
2022-12-08

Plug for a void, system and method

 #7
20210189876
2021-06-24

CLEAN AND EFFICIENT COAL MINING METHOD

 #8
20210115793
2021-04-22

Plug for a void, system and method

 #9
20200408094
2020-12-31

Mine exploitation based on stoping, separation and filling control

 #10
20200378256
2020-12-03

MINE EXPLOITATION, SEPARATION, FILLING AND TREATMENT EXPLOITATION METHOD

 #11
20200049008
2020-02-13

Plug for a void, system and method

 #12
20200040729
2020-02-06

Inclined shaft continuous feeding system for solid filling materials

 #13
20190368352
2019-12-05

Plug for a void, system and method

 #14
20190301283
2019-10-03

Method for recovering room-mining coal pillars by solid filling in synergy with artificial pillars

 #15
20170138194
2017-05-18

Method for removing hydraulic support for solid filling coal mining

 #16
20160311625
2016-10-27

Solid-filling coal mining feeding and conveying monitoring system

 #17
20150097413
2015-04-09

Apparatus and method for storing waste material

 #18
20140056646
2014-02-27

Apparatus and method for mining coal

 #19
20130193743
2013-08-01

Apparatus and Method for Mining Coal

 #20
20120319452
2012-12-20

Apparatus and method for mining coal

 #21
20110049965
2011-03-03

Apparatus and method for mining coal