ClassID:

143693

F04C29/0092 - CPC Classification

Classification description:

Component parts, details or accessories of pumps or pumping installations, not provided for in groups  -  Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning

Recent Application in this class:
#1
20260117771
2026-04-30

Screw Compressor

#2
20260078757
2026-03-19

MAGNETIC DEBRIS FILTER FOR COMPRESSOR AND COMPRESSOR WITH MAGNETIC DEBRIS FILTER

#3
20250382954
2025-12-18

FILTER DEVICE FOR AIR COMPRESSOR

#4
20250347280
2025-11-13

OIL-FREE PHASE SEPARATING COMPRESSOR

#5
20250305499
2025-10-02

MULTIFUNCTIONAL VACUUM PUMP

#6
20250243863
2025-07-31

ROTARY COMPRESSOR

#7
20250172146
2025-05-29

AIR-COOLED COMPRESSOR INSTALLATION WITH INTEGRATED DRYER DEVICE

#8
20250101984
2025-03-27

Oil-Free Air Compressor

#9
20250101979
2025-03-27

Control Device for Hydraulic Control Valve

#10
20250003410
2025-01-02

FLUID FILTER FOR A COMPRESSOR

#11
20240392786
2024-11-28

SEALING SOFT WATER RECOVERY APPARATUS FOR VACUUM PUMP IN VACUUM PRESSURE SWING ADSORPTION OXYGEN GENERATION SYSTEM

#12
20240376878
2024-11-14

ASSEMBLY FOR COMPRESSING GAS, METHOD FOR COOLING, AND USE OF SUCH AN ASSEMBLY

#13
20240328415
2024-10-03

Electronic positive displacement fluid pump with motor cooling and air purging

#14
20240175437
2024-05-30

Oil-free phase separating compressor

#15
20230374988
2023-11-23

Filter-and-throttle unit for a scroll compressor, and scroll compressor for a refrigerant circuit

#16
20230358233
2023-11-09

Fluid filter for a compressor

#17
20230235670
2023-07-27

Accumulator fixing device for compressor and compressor having the same

#18
20230097903
2023-03-30

VACUUM PUMP

#19
20230013325
2023-01-19

Device for recirculating an at least partially gaseous composition containing hydrogen and fuel cell system

#20
20220403801
2022-12-22

Pump for evaporative emissions system

#21
20220333601
2022-10-20

ACCUMULATOR FOR COMPRESSOR AND COMPRESSOR WITH ACCUMULATOR

#22
20220145888
2022-05-12

Rotary piston pump having a filter

#23
20220136508
2022-05-05

Scroll compressor having sealed-oil interception structure

#24
20220105858
2022-04-07

Pump System and Method for Operating a Pump System

#25
20220018347
2022-01-20

SEPARATOR SYSTEM

#26
20210293239
2021-09-23

Compressor and monitoring system

#27
20210172440
2021-06-10

Pump having liquid blades and an associated method of pumping

#28
20210108639
2021-04-15

ROOTS ROTOR FOR REMOVING DUST COAGULUM AND DROPLETS

#29
20200309133
2020-10-01

Oil-injected screw compressor

#30
20200217316
2020-07-09

Motor-operated compressor

#31
20200200172
2020-06-25

Liquid-ring vacuum pump having internal inspection and foreign matter removal functions

#32
20200197955
2020-06-25

COMPRESSOR CENTRIFUGAL FILTER DISC AND ASSEMBLY

#33
20200158113
2020-05-21

Oil separation structure and compressor

#34
20200123971
2020-04-23

Compound engine system with rotary engine

#35
20200102960
2020-04-02

Primary vacuum pump of dry type and method for controlling the injection of a purge gas

#36
20200094297
2020-03-26

Cleaning method

#37
20200054992
2020-02-20

Dryer for compressed gas, compressor installation provided with such a dryer and method for drying gas

#38
20200040895
2020-02-06

MULTISTAGE POWER SAVING VACUUM DEVICE WITH ROOT VACUUM PUMP IN FIRST STAGE

#39
20190383290
2019-12-19

Compressor system with purge gas system

#40
20190309747
2019-10-10

Screw Compressor for a Utility Vehicle

#41
20190240800
2019-08-08

Rotor polishing device

#42
20190201597
2019-07-04

Dual in-series large and small droplet filters

#43
20190201088
2019-07-04

Surgical evacuation system with a communication circuit for communication between a filter and a smoke evacuation device

#44
20190170144
2019-06-06

Oil flooded compressor system and method

#45
20190111359
2019-04-18

Modular heat exchanger, moisture separator and pulsation dampener for a multi-stage fluid compressor

#46
20190055882
2019-02-21

Rotary internal combustion engine with pilot subchamber

#47
20180335034
2018-11-22

Vacuum pump with sound absorption and check valve

#48
20180335033
2018-11-22

Filtering element and associated mounting device for vacuum pump

#49
20180311598
2018-11-01

Multi-phase pumping system with self-purging filtration

#50
20180266421
2018-09-20

Inlet valve and vacuum pump provided with such an inlet valve

#51
20180207581
2018-07-26

Apparatus for evacuating a corrosive effluent gas stream from a processing chamber

#52
20180195505
2018-07-12

Compressor

#53
20180187593
2018-07-05

Rotary internal combustion engine with pilot subchamber

#54
20180142689
2018-05-24

Oil separation barrel, screw compressor and air conditioning unit

#55
20180119995
2018-05-03

Air compressor system including a refrigerated dryer and a condensate harvester and water supply

#56
20180119696
2018-05-03

TANK CONTROL AND PUMP PROTECTION FOR AIR COMPRESSOR SYSTEM INCLUDING A CONDENSATE HARVESTER

#57
20180119600
2018-05-03

Oil-injected screw air compressor

#58
20180080371
2018-03-22

Rotary internal combustion engine with pilot subchamber

#59
20180045110
2018-02-15

Rotary internal combustion engine

#60
20180017062
2018-01-18

Compressor system and lubricant control valve to regulate temperature of a lubricant

#61
20180017061
2018-01-18

Compressor system and method for conditioning inlet air

#62
20170350397
2017-12-07

Method for controlling a gas supply to a vacuum pump

#63
20170348634
2017-12-07

Dryer for compressed gas, compressor installation provided with such a dryer and method for drying gas

#64
20170335762
2017-11-23

Compound engine system with rotary engine

#65
20170211575
2017-07-27

Screw compressor

#66
20170159659
2017-06-08

High volume vacuum pump for continuous operation

#67
20170101991
2017-04-13

Oil flooded compressor system and method

#68
20170082108
2017-03-23

WATER LUBRICATION TWIN-SCREW TYPE AIR COMPRESSOR

#69
20170074160
2017-03-16

Rotary internal combustion engine with variable volumetric compression ratio

#70
20170067395
2017-03-09

Rotary internal combustion engine with pilot subchamber

#71
20170058899
2017-03-02

Motor-driven compressor

#72
20170058898
2017-03-02

Motor-driven compressor

#73
20170045053
2017-02-16

Screw compressor having oil separator and water chilling unit

#74
20160369803
2016-12-22

Duct-mounted suction gas filter

#75
20160369797
2016-12-22

Fuel filter assembly with brushless DC pump

#76
20160369794
2016-12-22

Brushless DC motor control and methods of operating a fuel pump

#77
20160097572
2016-04-07

Refrigerant compressor with lubricant distribution unit having filter holding chamber with filter body therein

#78
20150361984
2015-12-17

Air compressor with drain pipe arrangement

#79
20150308458
2015-10-29

Screw compressor

#80
20150300354
2015-10-22

Hydrodynamic bearing applied on a contact interface of a fluid compressor based on a spiral type mechanism

#81
20150240710
2015-08-27

Rotary internal combustion engine with pilot subchamber

#82
20150233286
2015-08-20

Compound engine system with rotary engine

#83
20150170938
2015-06-18

Method and device for pumping of a process chamber

#84
20150147215
2015-05-28

Scroll-type fluid machine with grease-lubricated orbiting bearing

#85
20150075483
2015-03-19

Rotary internal combustion engine with exhaust purge

#86
20140377115
2014-12-25

Internal Gear Pump

#87
20140308589
2014-10-16

Fluid compressor and fuel cell vehicle

#88
20140224207
2014-08-14

Rotary internal combustion engine with variable volumetric compression ratio

#89
20140169992
2014-06-19

Vacuum pump

#90
20140161640
2014-06-12

Pump

#91
20130251562
2013-09-26

Suction duct with stabilizing ribs

#92
20130251544
2013-09-26

Suction duct with adjustable diametric fit

#93
20130248022
2013-09-26

Suction duct with heat-staked screen

#94
20130164147
2013-06-27

Vacuum pumping

#95
20130028772
2013-01-31

Compound engine system with rotary engine

#96
20130028768
2013-01-31

Rotary internal combustion engine with exhaust purge

#97
20130025567
2013-01-31

Rotary internal combustion engine with pilot subchamber

#98
20130025566
2013-01-31

Rotary internal combustion engine with variable volumetric compression ratio

#99
20130019900
2013-01-24

CLEANING METHOD AND SYSTEM FOR A VACUUM PUMP

#100
20130011288
2013-01-10

Scroll compressor

#101
20120315174
2012-12-13

Scroll-type fluid machine with grease-lubricated orbiting bearing

#102
20120312392
2012-12-13

Pump system with vacuum source

#103
20120251368
2012-10-04

Pump

#104
20120077104
2012-03-29

FLUID COMPRESSOR AND FUEL CELL VEHICLE

#105
20120051948
2012-03-01

Vacuum Pump

#106
20110143311
2011-06-16

Combination vertical rotary vane suction pump and liquid separator

#107
20110008183
2011-01-13

Vacuum source and float valve for a self-priming pump

#108
20100275843
2010-11-04

HVPE REACTOR ARRANGEMENT

#109
20100202912
2010-08-12

Apparatus for cleaning rotation body and vacuum pump having the same

#110
20100092320
2010-04-15

Inlet screen and scroll compressor incorporating same

#111
20100086883
2010-04-08

METHOD FOR REACTING SELF-IGNITING DUSTS IN A VACUUM PUMP DEVICE

#112
20090311105
2009-12-17

Rotary meter flexible edge impeller assembly

#113
20090269231
2009-10-29

Method of Pumping Gas

#114
20090232688
2009-09-17

Compressor Installation With a Water-Injected Compressor Element

#115
20080226485
2008-09-18

Vacuum pump having rotation body cleaning unit with spraying holes on an output surface of the cleaning body surrounding a shaft

#116
20080135066
2008-06-12

Method For Cleaning a Vacuum Screw-Type Pump

#117
20080118383
2008-05-22

Vacuum pump having fluid port and exhaust system

#118
20080044275
2008-02-21

PUMP

#119
20080038132
2008-02-14

Rotary Dry Vacuum Pump

#120
20080023081
2008-01-31

Strainer and anti-backflow device for compressors

#121
20070196228
2007-08-23

Dry Pumps

#122
20070172361
2007-07-26

Cleaning method of a rotary piston vacuum pump

#123
20060204377
2006-09-14

Internal intermediate pressure multistage compression type rotary compressor, manufacturing method thereof and displacement ratio setting method

#124
20060147318
2006-07-06

Oil carry-over prevention from helium gas compressor

#125
20060120909
2006-06-08

Rotary piston vacuum pump with washing installation

#126
20060110261
2006-05-25

Pump System with a vacuum source coupled to a separator

#127
20060099083
2006-05-11

Dry pumps

#128
20060083651
2006-04-20

Composite dry vacuum pump having roots rotor and screw rotor

#129
20060073034
2006-04-06

Compressor

#130
20060056983
2006-03-16

Internal intermediate pressure multistage compression type rotary compressor, manufacturing method thereof and displacement ratio setting method

#131
20060056982
2006-03-16

Multistage compression type rotary compressor

#132
20060056981
2006-03-16

Filtering device for multistage compression type rotary compressor

#133
20050214138
2005-09-29

Multistage rotary compressor

#134
20050112014
2005-05-26

Fluid compressor

#135
18747373
2025-12-16

Filter device for air compressor

#136
16864885
2024-02-20

Extending life cycles of vacuum pumps used in manufacturing processes