Patents-Review.com
ClassID:

144064 ⎘

F04D17/122 - CPC Classification

Classification description:

Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps; Centrifugal pumps for compressing or evacuating; Multi-stage pumps the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors

Sub-classes:
Recent Application in this class:
#1
20260110309
2026-04-23

INTERSTAGE CAPACITY CONTROL VALVE WITH SEPARATE DRIVE AND STABILIZATION LINKAGES

 #2
20260028992
2026-01-29

COMPRESSOR SYSTEM

 #3
20260002546
2026-01-01

COUPLING JOINTS TO INTERCONNECT AND TRANSMIT ROTATIONAL TORQUE BETWEEN ADJACENT IMPELLER BODIES IN A TURBOMACHINE

 #4
20250327457
2025-10-23

MULTI STAGE COMPRESSOR

 #5
20250283476
2025-09-11

HELICAL SEAL FOR MULTI-STAGE COMPRESSOR

 #6
20250243874
2025-07-31

CENTRIFUGAL COMPRESSOR

 #7
20250230839
2025-07-17

FOIL BEARING AND FLUID MACHINERY

 #8
20250223970
2025-07-10

METHOD AND SYSTEM FOR CONTROLLING DIFFERENTIAL PRESSURE FOR AN EXTERNALLY PRESSURIZED GAS BEARING APPARATUS

 #9
20250207598
2025-06-26

PROPANE DEHYDROGENATION SYSTEM WITH SINGLE CASING REACTOR EFFLUENT COMPRESSOR AND METHOD

 #10
20250189183
2025-06-12

TURBO CHILLER

 #11
20250146497
2025-05-08

GAS BEARING MANAGEMENT FOR A COMPRESSOR

 #12
20250116277
2025-04-10

ELECTRIC COMPRESSOR

 #13
20250101987
2025-03-27

CENTRIFUGAL COMPRESSOR WITH ENERGY RECOVERY FROM A RECYCLE LINE

 #14
20240426303
2024-12-26

COMPRESSOR WITH CURVED PASSAGE

 #15
20240392792
2024-11-28

ELECTRIC TURBO COMPRESSOR

 #16
20240229805
2024-07-11

COMPACT LOW NOISE EFFICIENT BLOWER FOR CPAP DEVICES

 #17
20240200567
2024-06-20

Turbomachine rotor with stacked impellers and turbomachine

 #18
20240133390
2024-04-25

Gas bearing management for a compressor

 #19
20240133386
2024-04-25

COMPACT LOW NOISE EFFICIENT BLOWER FOR CPAP DEVICES

 #20
20240018966
2024-01-18

Centrifugal compressor

 #21
20230375005
2023-11-23

Centrifugal compressor

 #22
20230340959
2023-10-26

Multi-stage turbomachine

 #23
20230332614
2023-10-19

COMPRESSOR ROTOR HAVING SEAL ASSEMBLY WITHIN HIRTH COUPLING

 #24
20230323898
2023-10-12

Multistage centrifugal compressor

 #25
20230304501
2023-09-28

MULTI-STAGE CENTRIFUGAL COMPRESSOR

 #26
20230258190
2023-08-17

Centrifugal compressor

 #27
20230213038
2023-07-06

Gas bearing management for a compressor

 #28
20230213037
2023-07-06

Method and system for controlling differential pressure for an externally pressurized gas bearing apparatus

 #29
20230184256
2023-06-15

COMPRESSOR

 #30
20230175520
2023-06-08

Rotor structure for a turbomachine with features to control relative growth at axial interfaces

 #31
20230167829
2023-06-01

Turbo fluid machine

 #32
20230139727
2023-05-04

Compressor interstage throttle, and method of operating therof

 #33
20230133059
2023-05-04

Compressor rotor having seal elements

 #34
20230130511
2023-04-27

Interstage capacity control valve with side stream flow distribution and flow regulation for multi-stage centrifugal compressors

 #35
20230125483
2023-04-27

Compressor rotor structure

 #36
20230106824
2023-04-06

Air compressor for vehicle

 #37
20230060779
2023-03-02

MULTI-STAGE COMPRESSOR WITH SINGLE ELECTRIC DIRECT DRIVE MOTOR

 #38
20230052135
2023-02-16

TWO-STAGE GAS COMPRESSING APPARATUS WITH COMPRESSED-GAS PRESSURE-DIFFERENCE-USE OPTIMIZING COOLING UNIT TO PERFORM COOLING USING PRESSURE DIFFERENCE

 #39
20230033121
2023-02-02

Impeller assemblies and method of making

 #40
20230016480
2023-01-19

Compressor with a system for removing liquid from the compressor

 #41
20220389931
2022-12-08

CENTRIFUGAL COMPRESSOR

 #42
20220372992
2022-11-24

ROTATING MACHINERY

 #43
20220349414
2022-11-03

Interstage capacity control valve with side stream flow distribution and flow regulation for multi-stage centrifugal compressors

 #44
20220290677
2022-09-15

Compact low noise efficient blower for CPAP devices

 #45
20220252073
2022-08-11

Power electronics cooling arrangement

 #46
20220243732
2022-08-04

Multi-stage rotor

 #47
20220196299
2022-06-23

Centrifugal compressor having a motor cooling passage

 #48
20220154638
2022-05-19

MULTISTAGE COMPRESSOR-EXPANDER TURBOMACHINE CONFIGURATION

 #49
20220145898
2022-05-12

Impeller of rotating machine and rotating machine

 #50
20220136744
2022-05-05

TURBO CHILLER

 #51
20220136525
2022-05-05

Hydrogen centrifugal compressor

 #52
20220120290
2022-04-21

Noise reduction method of a ventilator

 #53
20220056915
2022-02-24

Interstage capacity control valve with side stream flow distribution and flow regulation for multi-stage centrifugal compressors

 #54
20220056899
2022-02-24

Compressor system and method of inserting and pulling out bundle of compressor

 #55
20210364001
2021-11-25

Centrifugal compressor and refrigerating device

 #56
20210348615
2021-11-11

Turbo compressor and turbo chiller including the same

 #57
20210340988
2021-11-04

Interstage capacity control valve with side stream flow distribution and flow regulation for multi-stage centrifugal compressors

 #58
20210301831
2021-09-30

Impeller and centrifugal compressor

 #59
20210293243
2021-09-23

PROPANE DEHYDROGENATION SYSTEM WITH SINGLE CASING REACTOR EFFLUENT COMPRESSOR AND METHOD

 #60
20210277903
2021-09-09

Integrated gas compressor

 #61
20210262475
2021-08-26

Centrifugal compressor

 #62
20210239129
2021-08-05

Centrifugal compressor

 #63
20210207607
2021-07-08

Compressor system

 #64
20210199126
2021-07-01

Radial turbomachine

 #65
20210190078
2021-06-24

Multi-stage centrifugal compressor, casing, and return vane

 #66
20210190077
2021-06-24

Centrifugal rotary machine

 #67
20210164485
2021-06-03

Centrifugal multistage compressor

 #68
20210123453
2021-04-29

Centrifugal compressor

 #69
20210123446
2021-04-29

Charge gas compressor train for ethylene plant

 #70
20210115930
2021-04-22

Turbo-compressor and method of operating a turbo-compressor

 #71
20210108838
2021-04-15

Integrated connector for multi-stage compressor

 #72
20210102546
2021-04-08

Methods and mechanisms for surge avoidance in multi-stage centrifugal compressors

 #73
20210010478
2021-01-14

Centrifugal compressor for use with low global warming potential (GWP) refrigerant

 #74
20200400160
2020-12-24

Turbo compressor

 #75
20200355194
2020-11-12

SEAL ASSEMBLY FOR COMPRESSOR

 #76
20200340402
2020-10-29

Inter-compressor cross-over pipe heat exchanger

 #77
20200325906
2020-10-15

Rotary machine with improved shaft

 #78
20200309150
2020-10-01

Compressor

 #79
20200300253
2020-09-24

Rotary machine

 #80
20200300252
2020-09-24

Centrifugal compressor

 #81
20200300251
2020-09-24

Centrifugal compressor

 #82
20200248713
2020-08-06

Compressor

 #83
20200248709
2020-08-06

Method of manufacturing centrifugal rotary machine and centrifugal rotary machine

 #84
20200232474
2020-07-23

Impeller and rotary machine

 #85
20200208655
2020-07-02

CENTRIFUGAL COMPRESSOR

 #86
20200182250
2020-06-11

Compact low noise efficient blower for CPAP devices

 #87
20200165924
2020-05-28

Inter-compressor flow divider profiling

 #88
20200149541
2020-05-14

Systems and methods to clamp an impeller to a compressor shaft

 #89
20200132079
2020-04-30

Centrifugal turbo-compressor having a gas flow path including a relaxation chamber

 #90
20200080569
2020-03-12

Return channels for a multi-stage turbocompressor

 #91
20200063754
2020-02-27

Integrated structure of refluxer and pressure diffuser, and centrifugal compressor

 #92
20200056624
2020-02-20

Centrifugal compressor

 #93
20200049155
2020-02-13

Centrifugal compressor

 #94
20200025205
2020-01-23

Backfeed stage and radial turbo fluid energy machine

 #95
20200011334
2020-01-09

Centrifugal turbo-compressor

 #96
20190368497
2019-12-05

Return stage

 #97
20190353179
2019-11-21

Impeller assemblies and method of making

 #98
20190323511
2019-10-24

Heating, ventilation and air conditioning system comprising a fluid compressor

 #99
20190323509
2019-10-24

Fluid compressor

 #100
20190293088
2019-09-26

Multistage compressor having interstage refrigerant path split between first portion flowing to end of shaft and second portion following around thrust bearing disc

 #101
20190285072
2019-09-19

Centrifugal compressor with intermediate suction channel

 #102
20190271502
2019-09-05

Split refrigerant compressor for the liquefaction of natural gas

 #103
20190271325
2019-09-05

Rotating machine

 #104
20190249675
2019-08-15

Rotary machine

 #105
20190219068
2019-07-18

Multi-stage pump with enhanced thrust balancing features

 #106
20190195243
2019-06-27

Centrifugal compressor and method of modifying centrifugal compressor

 #107
20190178259
2019-06-13

VARIABLE RETURN CHANNEL VANES TO EXTEND THE OPERATING FLOW RANGE OF A VAPOR CYCLE CENTRIFUGAL COMPRESSOR

 #108
20190145416
2019-05-16

Multi-stage compressor with turbine section for fuel cell system

 #109
20190136869
2019-05-09

Rotary machine and diaphragm

 #110
20190136862
2019-05-09

Modular compressor with gas bearings and system for raising the pressure in production gas

 #111
20190126364
2019-05-02

Method for manufacturing centrifugal rotary machine and method for manufacturing impeller thereof

 #112
20190101133
2019-04-04

Centrifugal compressor

 #113
20190085850
2019-03-21

Compressor

 #114
20190078582
2019-03-14

Rotor of centrifugal compressor, centrifugal compressor, and method for manufacturing rotor of centrifugal compressor

 #115
20190072108
2019-03-07

Compressor, upper half assembly of the compressor, upper half diaphragm of the compressor, and compressor assembling method

 #116
20190063457
2019-02-28

Centrifugal compressor

 #117
20190055960
2019-02-21

Backfeed stage, radial turbo fluid energy machine

 #118
20190055947
2019-02-21

Centrifugal rotary machine

 #119
20190048878
2019-02-14

COMPRESSOR IMPELLER AND TURBOCHARGER

 #120
20190048877
2019-02-14

Rotary machine

 #121
20190040865
2019-02-07

Active surge control in centrifugal compressors using microjet injection

 #122
20190032833
2019-01-31

PIPING FOR DRIVEN-TYPE FLUID MACHINE

 #123
20180372121
2018-12-27

Multi-stage centrifugal compressor

 #124
20180371916
2018-12-27

Rotor for a turbomachine

 #125
20180356129
2018-12-13

CENTRIFUGAL REFRIGERANT VAPOUR COMPRESSORS

 #126
20180355891
2018-12-13

Rotating machine

 #127
20180355890
2018-12-13

Diffuser restriction ring

 #128
20180355880
2018-12-13

Sealing device and rotating machine

 #129
20180347589
2018-12-06

Centrifugal compressor

 #130
20180347584
2018-12-06

Extended sculpted twisted return channel vane arrangement

 #131
20180347583
2018-12-06

Casing assembly and rotary machine

 #132
20180347571
2018-12-06

Centrifugal compressor

 #133
20180328375
2018-11-15

Compressor

 #134
20180291927
2018-10-11

Method of construction for internally cooled diaphragms for centrifugal compressor

 #135
20180291923
2018-10-11

Apparatus for transferring energy between a rotating element and fluid

 #136
20180283404
2018-10-04

Reactor loop fouling monitor for rotating equipment in a petrochemical plant or refinery

 #137
20180283402
2018-10-04

Rotor balance adjustment method

 #138
20180283392
2018-10-04

Determining quality of gas for rotating equipment in a petrochemical plant or refinery

 #139
20180266433
2018-09-20

High stiffness turbomachine impeller, turbomachine including said impeller and method of manufacturing

 #140
20180238236
2018-08-23

Charge gas compression train for ethylene

 #141
20180231006
2018-08-16

Oil free centrifugal compressor for use in low capacity applications

 #142
20180209728
2018-07-26

Compression train including one centrifugal compressor and LNG plant

 #143
20180209434
2018-07-26

SUBSEA CENTRIFUGAL COMPRESSOR WITH HORIZONTAL SHAFT AND WITH ONLY ONE AXIAL THRUST BEARING

 #144
20180195520
2018-07-12

Turbo compressor

 #145
20180172025
2018-06-21

RETURN FLOW CHANNEL FORMATION PART FOR CENTRIFUGAL COMPRESSOR AND CENTRIFUGAL COMPRESSOR

 #146
20180149167
2018-05-31

Turbomachinery gasket and a turbomachinery provided with said gasket

 #147
20180142694
2018-05-24

Centrifugal compressor having an inter-stage sealing arrangement

 #148
20180135647
2018-05-17

Compressor

 #149
20180119569
2018-05-03

Method for inspecting rotary machine, and rotary machine

 #150
20180073513
2018-03-15

Method for inspecting rotary machine, and rotary machine

 #151
20180023589
2018-01-25

Centrifugal compressor

 #152
20180023584
2018-01-25

Centrifugal compressor and magnetic bearing backup system for centrifugal compressor

 #153
20180023573
2018-01-25

SUBSEA PRESSURE BOOSTER

 #154
20180010615
2018-01-11

Centrifugal compressor bundle and centrifugal compressor

 #155
20170370377
2017-12-28

Centrifugal-compressor casing and centrifugal compressor

 #156
20170370364
2017-12-28

Centrifugal compressor assembly and method of operation with an airconditioner

 #157
20170363110
2017-12-21

Motor-driven fan with trapped adhesive for minimizing vibration

 #158
20170363092
2017-12-21

Motor-driven fan with an assembly for minimizing vibration and strain

 #159
20170328373
2017-11-16

Compressor having a sealing channel

 #160
20170328369
2017-11-16

Motor compressor unit with magnetic bearings

 #161
20170292536
2017-10-12

RETURN STAGE OF A MULTI-STAGE TURBOCOMPRESSOR OR TURBOEXPANDER HAVING ROUGH WALL SURFACES

 #162
20170254344
2017-09-07

Centrifugal compressor

 #163
20170248346
2017-08-31

Centrifugal refrigerant vapour compressors

 #164
20170248154
2017-08-31

CENTRIFUGAL COMPRESSOR

 #165
20170248144
2017-08-31

Compact low noise efficient blower for CPAP devices

 #166
20170191487
2017-07-06

Compressor end head heating arrangement

 #167
20170184130
2017-06-29

Dry gas extraction device and method

 #168
20170176053
2017-06-22

Hot gas bypass for two-stage compressor

 #169
20170175754
2017-06-22

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

 #170
20170174049
2017-06-22

DYNAMICALLY CONTROLLED VAPOR COMPRESSION COOLING SYSTEM WITH CENTRIFUGAL COMPRESSOR

 #171
20170159665
2017-06-08

Multistage turbomachine with embedded electric motors

 #172
20170051661
2017-02-23

Turbocharger with compressor operable in either single-stage mode or two-stage serial mode

 #173
20170037866
2017-02-09

Impeller and rotating machine provided with same

 #174
20170023021
2017-01-26

Turbo machine

 #175
20170009775
2017-01-12

Capacity control system and method for multi-stage centrifugal compressor

 #176
20160376930
2016-12-29

Muffler and muffling device including the same

 #177
20160348684
2016-12-01

Angular velocity stepping and methods of use in turbomachinery

 #178
20160341069
2016-11-24

Position adjustment device, rotating machine provided with same, and position adjustment method

 #179
20160339193
2016-11-24

Multiple stage blowers and volutes therefor

 #180
20160333885
2016-11-17

Multiple stage blowers and volutes therefor

 #181
20160327056
2016-11-10

Intermediate intake-type diaphragm and centrifugal rotating machine

 #182
20160327050
2016-11-10

DIAPHRAGM AND CENTRIFUGAL ROTATING MACHINE

 #183
20160319839
2016-11-03

Centrifugal compressor and centrifugal unit having the same

 #184
20160319833
2016-11-03

Centrifugal compressor impeller with non-linear leading edge and associated design method

 #185
20160319820
2016-11-03

Method of assembling a set of impellers through tie rods impeller and turbomachine

 #186
20160305450
2016-10-20

Multi-stage electric centrifugal compressor

 #187
20160298645
2016-10-13

Vacuum pump component, siegbahn type exhaust mechanism and compound vacuum pump

 #188
20160290354
2016-10-06

Impeller, rotary machine, and impeller manufacturing method

 #189
20160281725
2016-09-29

Wet gas compression

 #190
20160265555
2016-09-15

Barrel turbo-machine comprising retracting shear

 #191
20160222981
2016-08-04

Multistage centrifugal compressor

 #192
20160222980
2016-08-04

Liquid tolerant impeller for centrifugal compressors

 #193
20160222970
2016-08-04

High-flow-capacity centrifugal hydrogen gas compression systems, methods and components therefor

 #194
20160218590
2016-07-28

Fan-cooled electrical machine with axial thrust compensation

 #195
20160201687
2016-07-14

Multistage centrifugal compressor

 #196
20160201683
2016-07-14

Multistage radial compressor baffle

 #197
20160195094
2016-07-07

Impeller and rotary machine provided with same

 #198
20160186764
2016-06-30

Multi-stage compressor with single electric direct drive motor

 #199
20160177961
2016-06-23

Turbo machine

 #200
20160169236
2016-06-16

Turbo compressor and turbo refrigerator

 #201
20160123344
2016-05-05

Compressor having hollow shaft

 #202
20160123342
2016-05-05

Systems and methods to clamp an impeller to a compressor shaft

 #203
20160040680
2016-02-11

Methods and systems for antisurge control of turbo compressors with side stream

 #204
20160032937
2016-02-04

Gas turbine engine axial drum-style compressor rotor assembly

 #205
20160017888
2016-01-21

Centrifugal fluid machine

 #206
20160010691
2016-01-14

Method of using pressure nitrided stainless steel hybrid bearing with a refrigerant lubricated compressor

 #207
20150377251
2015-12-31

Apparatus for transferring energy between a rotating element and fluid

 #208
20150377244
2015-12-31

SYSTEM AND METHOD FOR COMPRESSING AIR

 #209
20150354599
2015-12-10

Compressor unit with a variable aerodynamic profile

 #210
20150354594
2015-12-10

Compressor assembly method, and bundle guiding device

 #211
20150354589
2015-12-10

Centrifugal compressor with extended operating range

 #212
20150345507
2015-12-03

Compressor and turbo chiller

 #213
20150330395
2015-11-19

Seal of a compressor rotor

 #214
20150322965
2015-11-12

Centrifugal compressor

 #215
20150322961
2015-11-12

Rotor for a radial compressor and a method for construction thereof

 #216
20150316064
2015-11-05

Multistage compressor and method for operating a multistage compressor

 #217
20150315862
2015-11-05

Extended shale shaker screen handle(s)

 #218
20150308459
2015-10-29

Gas takeoff isolation system

 #219
20150308453
2015-10-29

Centrifugal rotation machine

 #220
20150300369
2015-10-22

Centrifugal compressor with twisted return channel vane

 #221
20150300248
2015-10-22

COMPRESSOR ARRANGEMENT AND TURBOSHAFT ENGINE WITH A COMPRESSOR ARRANGEMENT

 #222
20150300193
2015-10-22

Turbomachine

 #223
20150292346
2015-10-15

Process gas compressor/gas turbine section

 #224
20150292330
2015-10-15

Method of making a turbomachine

 #225
20150285253
2015-10-08

Penetrator power connector for an integrated rotary machine

 #226
20150276282
2015-10-01

Motor cooling system for chillers

 #227
20150267710
2015-09-24

Seal device and rotary machine

 #228
20150267707
2015-09-24

Motor-driven turbo compressor

 #229
20150267559
2015-09-24

Method of manufacturing rotary machine, method of plating rotary machine, and rotary machine

 #230
20150226221
2015-08-13

Actuation device, in particular electronic actuator

 #231
20150224546
2015-08-13

Centrifugal compressor and washing method

 #232
20150211543
2015-07-30

Anti-swirl device

 #233
20150184664
2015-07-02

Rotary machine

 #234
20150159670
2015-06-11

Impeller for centrifugal rotary machine, and centrifugal rotary machine

 #235
20150128640
2015-05-14

Two-stage centrifugal compressor with extended range and capacity control features

 #236
20150128627
2015-05-14

Liquid level indicator, turbo compressor, and turbo refrigerator

 #237
20150118075
2015-04-30

COMPRESSOR THRUST BEARING SURGE PROTECTION

 #238
20150107289
2015-04-23

HIGH PRESSURE RATIO MULTI-STAGE CENTRIFUGAL COMPRESSOR

 #239
20150086329
2015-03-26

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

 #240
20150064026
2015-03-05

Motor cooling system manifold

 #241
20150056069
2015-02-26

Rotary machine

 #242
20150043848
2015-02-12

Thermal barrier coating for bearing journal surfaces of rotary shafts

 #243
20150037147
2015-02-05

Compressor

 #244
20150030444
2015-01-29

Turbomachine with gap adjustment

 #245
20150023785
2015-01-22

Coupling for directly driven compressor

 #246
20150016988
2015-01-15

Seal for a high-pressure turbomachine

 #247
20140371919
2014-12-18

Centrifugal refrigerant vapour compressors

 #248
20140356138
2014-12-04

Variable-speed multi-stage refrigerant centrifugal compressor with diffusers

 #249
20140328677
2014-11-06

Bearing unit

 #250
20140301821
2014-10-09

System and method of controlling wrapping flow in a fluid working apparatus

 #251
20140301680
2014-10-09

Planetary-type auxiliary bearing for a hydrostatic primary bearing

 #252
20140248141
2014-09-04

Turbocompressor and Use

 #253
20140234136
2014-08-21

Motor compressor unit with removable cartridge

 #254
20140227091
2014-08-14

Compact low noise efficient blower for CPAP devices

 #255
20140227079
2014-08-14

Midspan active magnetic bearing

 #256
20140186161
2014-07-03

Seal plate

 #257
20140133959
2014-05-15

Multistage centrifugal turbomachine

 #258
20140127059
2014-05-08

Centrifugal compressor assembly and method

 #259
20140112774
2014-04-24

Centrifugal gas compressor magnetic bearing thrust collar with mounting pilots

 #260
20140093396
2014-04-03

Gas compressor control system preventing vibration damage

 #261
20140086764
2014-03-27

Subsea pressure booster

 #262
20140041663
2014-02-13

Multiple stage blowers and volutes therefor

 #263
20130318797
2013-12-05

Compressor thrust bearing surge protection

 #264
20130287555
2013-10-31

Compressor housing bearing and seal

 #265
20130272909
2013-10-17

Diaphragm with passive flow rate control for compression stage

 #266
20130259644
2013-10-03

MULTI-STAGE CENTRIFUGAL COMPRESSOR AND RETURN CHANNELS THEREFOR

 #267
20130243582
2013-09-19

Compressor and method of assembling the same

 #268
20130136629
2013-05-30

Subsea motor-compressor cooling system

 #269
20130064659
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