Patents-Review.com
ClassID:

135392 ⎘

E21B21/07 - CPC Classification

Classification description:

Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor; Arrangements for treating drilling fluids outside the borehole for treating dust-laden gaseous fluids

Recent Application in this class:
#1
20260110226
2026-04-23

METHOD FOR MONITORING DUST COLLECTOR PERFORMANCE, A DUST COLLECTING ARRANGEMENT OF A DRILLING APPARATUS AND A ROCK DRILLING RIG

 #2
20240052713
2024-02-15

Device for preventing abrupt blockage in blooie line of gas drilling

 #3
20240003207
2024-01-04

Inlet tube, rock drilling rig and method of sampling

 #4
20240003206
2024-01-04

Homogenizer, rock drilling rig and method of sampling

 #5
20190226338
2019-07-25

Drilling apparatus and method for collecting research sample

 #6
20160273355
2016-09-22

Surface fluid extraction and separator system

 #7
20160220937
2016-08-04

Mobile multi sack dust collection apparatus

 #8
20160047241
2016-02-18

Automatic dust suppression system and method

 #9
20130082506
2013-04-04

Method and apparatus for increasing the yield in a deposit

 #10
20130076099
2013-03-28

Method and apparatus for increasing the yield in a deposit

 #11
20130048385
2013-02-28

Dust Binding Device and Method

 #12
20110198130
2011-08-18

Articulated pre-skimmer mount

 #13
20100320000
2010-12-23

Arrangement for processing dust

 #14
20100139986
2010-06-10

Agitator for a drill and related methods

 #15
20100025041
2010-02-04

Portable well treating fluid mixing system and method

 #16
20090241772
2009-10-01

Particle Separator for Separating Drill Cuttings From an Air Flow and a Drill Rig as Well as a Method for Controlling a Particle Separator

 #17
20080277121
2008-11-13

Dust control system for transferring dry material used in subterranean wells

 #18
14094874
2015-08-25

Dust collection system