ClassID:

144129

F04D25/16 - CPC Classification

Classification description:

Pumping installations or systems Combinations of two or more pumps Producing two or more separate gas flows

Sub-classes:
Recent Application in this class:
#1
20260060488
2026-03-05

CLEANING ASSEMBLY FOR SUCTIONING A SUCTION SUBSTRATE BY MEANS OF A SUCTION APPARATUS

#2
20260049612
2026-02-19

FLUID VACUUM PUMP

#3
20260028973
2026-01-29

MULTI-PRESSURE INTEGRATED AIR PUMP

#4
20260009395
2026-01-08

COMPRESSED-AIR SYSTEM

#5
20250389281
2025-12-25

REFRIGERANT CIRCULATION DEVICE

#6
20250297614
2025-09-25

STATIC GAS THRUST BEARING

#7
20250283472
2025-09-11

COMPRESSOR FOR CO2 CYCLE WITH AT LEAST TWO CASCADE COMPRESSION STAGES FOR ASSURING SUPERCRITICAL CONDITIONS

#8
20250283470
2025-09-11

Valve Pump Unit

#9
20250257733
2025-08-14

LOW EMISSION COMPRESSION STATION WITHOUT DEDICATED POWER GENERATION ISLAND

#10
20250237219
2025-07-24

SYSTEMS AND METHODS FOR IMPROVING THE PERFORMANCE OF A GAS-DRIVEN GENERATOR USING A PHASE CHANGE REFRIGERANT

#11
20250217724
2025-07-03

COMPUTER-BASED SYSTEMS CONFIGURED TO EXECUTE AT LEAST ONE HIGH-POWER CONSUMING MODULE, SYSTEMS INCLUDING THE SAME, AND METHOD OF USING THE SAME

#12
20250215882
2025-07-03

AIR MOVING DEVICES, AERODYNAMIC ROTOR, AND METHODS

#13
20250137460
2025-05-01

DUAL-MODE COMPRESSOR

#14
20250092876
2025-03-20

AIR MOVING DEVICES, AERODYNAMIC ROTOR, AND METHODS

#15
20250012293
2025-01-09

ELECTRIC WATER PUMP

#16
20240426290
2024-12-26

P & I DIAGRAM INPUT

#17
20240369054
2024-11-07

HYDROGEN COMPRESSING ASSEMBLY, HYDROGEN PRODUCTION PLANT, AND COMPRESSING METHOD

#18
20240110574
2024-04-04

Blower device

#19
20240068466
2024-02-29

PROGRAM UPDATE METHOD FOR THE GAS COMPRESSOR SYSTEM

#20
20240035480
2024-02-01

Multi-stage compressor assembly having rows of blades arranged to rotate in counter-opposite rotational directions

#21
20240011493
2024-01-11

COMPRESSOR FOR CO2 CYCLE WITH AT LEAST TWO CASCADE COMPRESSION STAGES FOR ASSURING SUPERCRITICAL CONDITIONS

#22
20230383757
2023-11-30

VACUUM PUMP AND VACUUM EXHAUST SYSTEM USING THE VACUUM PUMP

#23
20230340962
2023-10-26

Optimization systems and methods for operating air compressor groups

#24
20230332587
2023-10-19

MULTI-PRESSURE INTEGRATED AIR PUMP

#25
20230258191
2023-08-17

DRY VACUUM PUMP REGENERATION MECHANISM AND DRY VACUUM PUMP REGENERATION METHOD

#26
20230200311
2023-06-29

Backpack tool apparatus

#27
20230193917
2023-06-22

Turbo compressor

#28
20230135006
2023-05-04

ELECTRIC OIL FIELD CONTAINER PACKAGE

#29
20230121945
2023-04-20

Multiple-pump device

#30
20230107879
2023-04-06

METHOD TO OPERATE A VACUUM SYSTEM

#31
20230107601
2023-04-06

Modularized subsea compressor train and method of installation

#32
20230061958
2023-03-02

Apparatus for optimal loadsharing between parallel gas compressors

#33
20230003233
2023-01-05

SERIES FAN FRAME BODY STRUCTURE

#34
20220397119
2022-12-15

Method and apparatus for compressing a gas feed with a variable flow rate

#35
20220397118
2022-12-15

PROCESS AND APPARATUS FOR COMPRESSING HYDROGEN GAS IN A HYBRID COMPRESSION SYSTEM

#36
20220397117
2022-12-15

Process and apparatus for operating a compression system

#37
20220395770
2022-12-15

DEVICE AND A METHOD FOR TANGENTIAL FLOW FILTRATION OF A FLUID

#38
20220364570
2022-11-17

Reversible fan

#39
20220364568
2022-11-17

Vacuum pump system and vacuum pump

#40
20220333603
2022-10-20

Gas-driven generator system comprising an elongate gravitational distribution conduit coupled with a gas injection system

#41
20220316483
2022-10-06

Systems and methods for improving the performance of air-driven generators using solar thermal heating

#42
20220290691
2022-09-15

Process and apparatus for compressing hydrogen gas in a centrifugal compressor

#43
20220268209
2022-08-25

Compact low-pressure compressor

#44
20220252078
2022-08-11

Fan system and fan driving method

#45
20220243735
2022-08-04

Pump device and cooling device

#46
20220235789
2022-07-28

Compressor arrangement and method of operating a compressor

#47
20220213880
2022-07-07

Methods and systems for cooling a vacuum pump

#48
20220170467
2022-06-02

Multi-pump apparatus of cooling system

#49
20220154722
2022-05-19

FAN APPARATUS

#50
20220125214
2022-04-28

Built-in air pump assembly

#51
20220082105
2022-03-17

Dual system electric powered aspirators

#52
20220074418
2022-03-10

Motor-driven compressor having a compression section mounted on a free end of a cantilvered shaft

#53
20220065255
2022-03-03

MULTISTAGE CENTRIFUGAL PUMP FOR CONVEYING A FLUID

#54
20220049708
2022-02-17

Blower device

#55
20220049691
2022-02-17

Fluid machine system and method for controlling same

#56
20220025881
2022-01-27

Development of a higher-level model for operation of a compressor system

#57
20220010788
2022-01-13

Multiple chamber vacuum exhaust system

#58
20210408852
2021-12-30

Resin molded rotor, canned motor, canned motor pump, fan scrubber, and vacuum pump apparatus

#59
20210340906
2021-11-04

GASEOUS FLUID COMPRESSION WITH ALTERNATING REFRIGERATION AND MECHANICAL COMPRESSION

#60
20210277906
2021-09-09

Pump management system

#61
20210217579
2021-07-15

System for evacuating a chamber

#62
20210207605
2021-07-08

Digital inflation and deflation adjustment structure for a pump

#63
20210207604
2021-07-08

FLUID VACUUM PUMP

#64
20210172434
2021-06-10

P and I diagram input

#65
20210144883
2021-05-13

Systems and methods for redirection of airflow in an information handling system after an air mover fault

#66
20210123450
2021-04-29

Electric compressor system for vehicle

#67
20210115933
2021-04-22

Vacuum pumping device and vacuum pumping device starting method

#68
20210048016
2021-02-18

Industrial control system for distributed compressors

#69
20210040958
2021-02-11

CENTRIFUGAL COMPRESSOR ACHIEVING HIGH PRESSURE RATIO

#70
20210033086
2021-02-04

Methods and systems for cooling a vacuum pump

#71
20210025380
2021-01-28

Gas compressor and method for controlling same

#72
20210003137
2021-01-07

Method for analyzing, monitoring, optimizing and/or comparing energy efficiency in a multiple compressor system

#73
20210003120
2021-01-07

Multi-pressure integrated air pump

#74
20200392962
2020-12-17

Built-in air pump assembly

#75
20200383281
2020-12-10

Backpack tool apparatus

#76
20200378625
2020-12-03

Air blowing apparatus and air conditioner

#77
20200340463
2020-10-29

Bent axis hydraulic pump with centrifugal assist

#78
20200319053
2020-10-08

Leak detector for checking sealing tightness of an object comprising a pumping device including a turbomolecular pump and first and second vacuum pumps having at least one first and second pumping stage wherein the outlet of the second vacuum pump is connected between pumping stages of the first vacuum pump

#79
20200318641
2020-10-08

COMPRESSION TRAIN INCLUDING TWO CENTRIFUGAL COMPRESSORS AND LNG PLANT INCLUDING TWO CENTRIFUGAL COMPRESSORS

#80
20200300498
2020-09-24

A COMPACT HEAT RECOVERY VENTILATION SYSTEM

#81
20200256345
2020-08-13

Smart electric air pump

#82
20200248706
2020-08-06

Inflation pump and operating method and usage of the same

#83
20200240437
2020-07-30

Compression device and method and refrigeration machine

#84
20200200181
2020-06-25

Oil control for climate-control system

#85
20200200180
2020-06-25

Air pump for an inflatable body

#86
20200200160
2020-06-25

Oil control for climate-control system

#87
20200191155
2020-06-18

ODOR DELIVERY DEVICE

#88
20200173340
2020-06-04

System and method for a variable speed cooling fan on a skid mounted compressor

#89
20200158028
2020-05-21

Apparatus and method for evacuating very large volumes

#90
20200129909
2020-04-30

Air purifier including bi-directional fans having different discharge directions

#91
20200105496
2020-04-02

System for evacuating a chamber

#92
20200094943
2020-03-26

Differential drive propulsion system and coordinated control of a grouping of such systems for vehicle maneuvers

#93
20200063745
2020-02-27

Air pump with two fans

#94
20200049156
2020-02-13

Built-In Air Pump Assembly

#95
20200046135
2020-02-13

Built-in air pump assembly

#96
20190345920
2019-11-14

Modular pumping system

#97
20190301476
2019-10-03

Electric air pump system

#98
20190293075
2019-09-26

Fan apparatus

#99
20190257298
2019-08-22

System comprising two or more pumps connected in parallel and a pressure switch conceived to operate in said system

#100
20190218968
2019-07-18

Gaseous fluid compression with alternating refrigeration and mechanical compression using a first and second bank of compression coupled with first and second cascading heat pump intercoolers having a higher and a lower temperature section

#101
20190162193
2019-05-30

Mass-spectrometric leak detector with turbomolecular pump and booster pump on a common shaft

#102
20190145417
2019-05-16

Pump device

#103
20190120236
2019-04-25

Integrated connector between first and second vacuum pumps creating a vapor phase region environment

#104
20190120224
2019-04-25

P and I diagram input

#105
20190068090
2019-02-28

Variable-speed speed increaser

#106
20190010949
2019-01-10

Anti-surge speed control for two or more compressors

#107
20190003483
2019-01-03

Compressor wheel and fluid compression device comprising the same

#108
20180371981
2018-12-27

System and method involving a variable speed cooling fan used with a compressor and an internal combustion engine

#109
20180310432
2018-10-25

Cooling systems

#110
20180223857
2018-08-09

PUMPING SYSTEM WITH BARRIER FLUID DELIVERY CIRCUIT FOR DRY GAS SEALS

#111
20180209427
2018-07-26

LNG PLANT INCLUDING AN AXIAL COMPRESSOR AND A CENTRIFUGAL COMPRESSOR

#112
20180180053
2018-06-28

Method for handling the shutdown of a turbomachine string in a liquefaction plant of a gaseous product

#113
20180179861
2018-06-28

Integrated control of downhole and surface blower systems

#114
20180172028
2018-06-21

Direct drive-type turbo blower cooling structure

#115
20180163732
2018-06-14

VACUUM PUMP

#116
20180156221
2018-06-07

Series fan with support frame

#117
20180128275
2018-05-10

Fan coil unit

#118
20180106260
2018-04-19

Method and apparatus for compressor system pressurization

#119
20180084676
2018-03-22

Cooling system with integrated fill and drain pump

#120
20180073512
2018-03-15

Assembly having two compressors, method for retrofitting

#121
20180066677
2018-03-08

FAN

#122
20170306981
2017-10-26

Volute Structure, Centrifugal Compressor and Refrigeration Equipment

#123
20170306968
2017-10-26

Turbomachine arrangement

#124
20170292522
2017-10-12

Compressed air system and method of operating same

#125
20170291815
2017-10-12

Machine train for producing nitric acid

#126
20170276139
2017-09-28

Thrust generating apparatus for controlling attitude of movable body

#127
20170273252
2017-09-28

Blow operation device

#128
20170273251
2017-09-28

BLOW OPERATION DEVICE

#129
20170254343
2017-09-07

Fan device, motor and liquid pump

#130
20170248068
2017-08-31

BYPASS VALVE FOR COMPRESSOR

#131
20170241433
2017-08-24

CENTRIFUGAL TURBOMACHINE WITH TWO STAGES ARRANGED BACK-TO-BACK AND WITH AN ANNULAR TRANSFER DUCT BETWEEN THE STAGES

#132
20170241425
2017-08-24

Dual compressor turbocharger

#133
20170218963
2017-08-03

Compressor system

#134
20170207733
2017-07-20

Turbocompressor comprising a compressor motor generating regenerative electric power by regenerative driving capable of driving a compressor motor

#135
20170184114
2017-06-29

Pump seal lubricator

#136
20170175754
2017-06-22

Apparatus for pressurizing a fluid within a turbomachine and method of operating the same

#137
20170152856
2017-06-01

Load sharing control for compressors in series

#138
20170108011
2017-04-20

FAN

#139
20170108010
2017-04-20

Fan

#140
20170101995
2017-04-13

Electric supercharger and supercharging system

#141
20170097004
2017-04-06

Dual compressor turbocharger

#142
20170089637
2017-03-30

Parallel compression in LNG plants using a positive displacement compressor

#143
20170089347
2017-03-30

Vortex generator

#144
20160369807
2016-12-22

KINETIC ENERGY RECOVERY SYSTEM

#145
20160369806
2016-12-22

VEHICLE

#146
20160365234
2016-12-15

Vacuum pump and mass spectrometer

#147
20160348686
2016-12-01

Screw pump and impeller fan assemblies and method of operating

#148
20160327049
2016-11-10

MULTI-STAGE COMPRESSION SYSTEM AND METHOD OF OPERATING THE SAME

#149
20160319825
2016-11-03

Vacuum exhaust mechanism, compound type vacuum pump, and rotating body part

#150
20160318608
2016-11-03

Self propelled air cushion supported aircraft cargo loading systems and methods

#151
20160271805
2016-09-22

Vacuum generating apparatus and vacuum tube lifter having a vacuum generating apparatus

#152
20160265521
2016-09-15

PUMP ASSEMBLIES

#153
20160251041
2016-09-01

Air guiding device and method for operating the same

#154
20160242326
2016-08-18

Cooling system with integrated fill and drain pump

#155
20160242319
2016-08-18

Cooling system with integrated fill and drain pump

#156
20160160864
2016-06-09

COOLING SYSTEM FOR AN ENERGY STORAGE SYSTEM AND METHOD OF OPERATING THE SAME

#157
20160123351
2016-05-05

Boosting system, and boosting method of gas

#158
20160123331
2016-05-05

Solar and wind powered blower utilizing a flywheel and turbine

#159
20160109179
2016-04-21

Isolated power networks within an all-electric LNG plant and methods for operating same

#160
20160108810
2016-04-21

Dual compressor turbocharger

#161
20160076547
2016-03-17

Solar fan

#162
20160033197
2016-02-04

Method for compressing an incoming feed air stream in a cryogenic air separation plant

#163
20160032918
2016-02-04

Development of a higher-level model

#164
20160032916
2016-02-04

P and I diagram input

#165
20160025106
2016-01-28

Method and system for cooling a motor-compressor with a closed-loop cooling circuit

#166
20160017879
2016-01-21

Manual piston air pump having high flow electric rotary pump

#167
20160003046
2016-01-07

Parallel Twin-Impeller Compressor Having Swirl-Imparting Device For One Impeller

#168
20150337845
2015-11-26

Multi-stage compressor system for generating a compressed gas

#169
20150330408
2015-11-19

Air compression apparatus

#170
20150322763
2015-11-12

Gas compression system

#171
20150322749
2015-11-12

Gas compression system

#172
20150316068
2015-11-05

Air pump with internal automatic controller

#173
20150308435
2015-10-29

Side-by-side dual pump and motor with control device

#174
20150170877
2015-06-18

Vacuum assembly for an ion implanter system

#175
20150167675
2015-06-18

Radial compressor and compressor arrangement with such a radial compressor

#176
20150139776
2015-05-21

Compressor control device, compressor system and compressor control method

#177
20150086329
2015-03-26

Multi-stage radial compressor unit comprising gas removal during a compressor stage

#178
20150044071
2015-02-12

Pump Arrangement

#179
20140348634
2014-11-27

Adapter for vacuum pumps and associated pumping device

#180
20140294605
2014-10-02

Methods and systems for maintaining a high vacuum in a vacuum enclosure

#181
20140271236
2014-09-18

Fan driving circuit

#182
20140205426
2014-07-24

Multiple turbocharger control

#183
20140199179
2014-07-17

Hybrid magnetic suspension of a rotor

#184
20140045415
2014-02-13

Cabin air compressor outlet duct

#185
20130294928
2013-11-07

Dual pump and motor with control device

#186
20130276764
2013-10-24

Valve device for controlling the air intake for a compressor of a vehicle, and compressor system and method for controlling a compressor system

#187
20130177453
2013-07-11

Pumping arrangement

#188
20130142671
2013-06-06

Method and system to reduce to wear on a bearing

#189
20130058800
2013-03-07

Parallel dynamic compressor arrangement and methods related thereto

#190
20130028724
2013-01-31

AXIAL-RADIAL TURBOMACHINE

#191
20120301267
2012-11-29

CONDUCTING UNIT, AND CONDUCTING METHODS

#192
20120260693
2012-10-18

COMPRESSION METHOD AND AIR SEPARATION

#193
20120219443
2012-08-30

Vacuum pumping system having an ejector and check valve

#194
20120189431
2012-07-26

Compressor arrangement

#195
20120164008
2012-06-28

NEGATIVE-PRESSURE OXYGEN PROVIDING DEVICE

#196
20120131897
2012-05-31

Carbon dioxide compression systems

#197
20120111419
2012-05-10

Method for delivering fluids using a centrifugal pump

#198
20120107143
2012-05-03

Method and system for cooling a motor-compressor with a closed-loop cooling circuit

#199
20120055335
2012-03-08

DRAIN LIQUID RELIEF SYSTEM FOR A SUBSEA COMPRESSOR AND A METHOD FOR DRAINING THE SUBSEA COMPRESSOR

#200
20120055184
2012-03-08

CENTRIFUGAL-CHILLER AND METHOD FOR CONTROLLING THE SAME

#201
20120006411
2012-01-12

Fluid compression system

#202
20110314847
2011-12-29

DUAL DUTY COMPRESSION MACHINE

#203
20110293439
2011-12-01

Cooling fan driving device and fan rotational speed control method

#204
20110157824
2011-06-30

Centrifugal fan and electronic apparatus

#205
20110137621
2011-06-09

Non-Iterative Mapping of Fan Noise Across a Hydraulic Plane

#206
20110048546
2011-03-03

Gas compression system

#207
20100329895
2010-12-30

Multistage compressor installation

#208
20100294374
2010-11-25

Seal leakage gas recovery system

#209
20100257895
2010-10-14

METHOD FOR THE UNINTERRUPTED OPERATION OF A GAS LIQUEFACTION SYSTEM

#210
20100196143
2010-08-05

Axial compressor

#211
20100196139
2010-08-05

LEAKAGE FLOW MINIMIZATION SYSTEM FOR A TURBINE ENGINE

#212
20100178154
2010-07-15

Method and system for controlling a turbocompressor group

#213
20100006361
2010-01-14

Agricultural machine having dedicated multi-section fan unit

#214
20090297339
2009-12-03

LOW NOISE EJECTOR FOR A TURBOMACHINE

#215
20090241771
2009-10-01

Systems and methods for gas separation using high-speed permanent magnet motors with centrifugal compressors

#216
20090211244
2009-08-27

Integrated supercharger module

#217
20090169400
2009-07-02

Fan hub integrated vacuum pump system

#218
20090155102
2009-06-18

Integrated hydrogen recirculation blower for fuel cell vehicle

#219
20090155060
2009-06-18

Integrated fan with pump and heat exchanger cooling capability

#220
20090126363
2009-05-21

High response compact turbocharger

#221
20090050082
2009-02-26

Cooling system for motor vehicle

#222
20090022607
2009-01-22

ARRANGEMENT FOR DELIVERING FLUIDS

#223
20090022577
2009-01-22

Bearing Screw

#224
20080264061
2008-10-30

Modular air compression apparatus with separate platform arrangement

#225
20080232951
2008-09-25

Fan case reinforcement in a gas turbine jet engine

#226
20080210317
2008-09-04

Dynamically Controlled Compressors

#227
20080199301
2008-08-21

Fan case reinforcement in a gas turbine jet engine

#228
20080193303
2008-08-14

Multi-stage vacuum pumping arrangement

#229
20080166247
2008-07-10

Single-Shaft Vacuum Positive Displacement Pump

#230
20080139099
2008-06-12

Compressor arrangement and air-conditioning system with compressor arrangement

#231
20080080139
2008-04-03

Impeller and aligned cold plate

#232
20080061638
2008-03-13

Arrangement for conveying fluids

#233
20080038126
2008-02-14

Assembly for transporting fluids

#234
20080019842
2008-01-24

System and method for controlling compressor flow

#235
20070189905
2007-08-16

MULTI-STAGE COMPRESSION SYSTEM AND METHOD OF OPERATING THE SAME

#236
20070147985
2007-06-28

Turbo compressor

#237
20070147984
2007-06-28

Turbo compressor

#238
20070145920
2007-06-28

Fan system and speed detecting device thereof

#239
20070110576
2007-05-17

Blade wheel structure

#240
20070107880
2007-05-17

Heat sink structure

#241
20070065300
2007-03-22

MULTI-STAGE COMPRESSION SYSTEM INCLUDING VARIABLE SPEED MOTORS

#242
20070033966
2007-02-15

Vehicle air conditioning system

#243
20070031301
2007-02-08

Compressor for high pressure polymerization

#244
20070028609
2007-02-08

Cooling device for the hydraulic fluid of a site machine hydrostatic drive

#245
20060260309
2006-11-23

High response compact turbocharger

#246
20060193115
2006-08-31

Liquid-cooling heat dissipation module

#247
20060059889
2006-03-23

Method and apparatus for improving fan case containment and heat resistance in a gas turbine jet engine

#248
20060034702
2006-02-16

Leak detector comprising an inlet

#249
20060032625
2006-02-16

Arrangement and method for removing heat from a component which is to be cooled

#250
20050276702
2005-12-15

Compressor inlet pressure control system

#251
20050223737
2005-10-13

Centrifugal compressor

#252
20050186066
2005-08-25

Fluid flow control apparatus

#253
20050147509
2005-07-07

Apparatus and method for control, pumping and abatement for vacuum process chambers

#254
20050106005
2005-05-19

Turbo molecular high-vacuum pump with a circular intake area

#255
20050100454
2005-05-12

Device for circulating sealing gas for mechanical dry seals of a centrifugal compressor at times when the machine is stationary and pressurized

#256
20050056014
2005-03-17

High response, compact turbocharger

#257
20050000436
2005-01-06

Multi-chamber installation for treating objects under vacuum, method for evacuating said installation and evacuation system therefor

#258
19293033
2026-02-10

Dual-duct air pump

#259
18946862
2025-05-20

Bidirectional blowing fireplace fan

#260
18761706
2025-09-23

Clip-on combination fan

#261
15200020
2018-09-11

Multistage compressors and reverse compressors comprising a series of centrifugal pumps alternating flow toward and away from axle with better flow transitions between stages