ClassID:

144256

F04D29/286 - CPC Classification

Classification description:

Details, component parts, or accessories; Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors multi-stage rotors

Recent Application in this class:
#1
20260146613
2026-05-28

PORTED SHROUD ON RADIALLY NESTED DUAL STATE COMPRESSOR

#2
20260139685
2026-05-21

MULTI-STAGE IMPELLER USABLE WITH A COMPRESSOR AND COMPRESSOR WITH MULTI-STAGE IMPELLER

#3
20260071633
2026-03-12

PORTED COMPRESSOR WITH PARTIALLY SWEPT LEADING EDGE FOR GAS TURBINE ENGINE

#4
20260063129
2026-03-05

SPLIT CASING INCLUDING A COMPLIANT ELEMENT

#5
20260028992
2026-01-29

COMPRESSOR SYSTEM

#6
20260002546
2026-01-01

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

#7
20250361870
2025-11-27

MULTI-STAGE COMPRESSOR

#8
20250347290
2025-11-13

COMPRESSOR WITH BYPASS FOR INTERSTAGE PASSAGE

#9
20250327457
2025-10-23

MULTI STAGE COMPRESSOR

#10
20250223970
2025-07-10

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

#11
20250207598
2025-06-26

PROPANE DEHYDROGENATION SYSTEM WITH SINGLE CASING REACTOR EFFLUENT COMPRESSOR AND METHOD

#12
20250146497
2025-05-08

GAS BEARING MANAGEMENT FOR A COMPRESSOR

#13
20250043789
2025-02-06

VARIABLE GEOMETRY SUPERSONIC COMPRESSOR

#14
20250003414
2025-01-02

ELECTRIC TURBO COMPRESSOR

#15
20240352941
2024-10-24

AIR-FLOATING CENTRIFUGAL COMPRESSOR

#16
20240229804
2024-07-11

Variable geometry supersonic compressor

#17
20240200567
2024-06-20

Turbomachine rotor with stacked impellers and turbomachine

#18
20240167481
2024-05-23

Multistage fluid compressor

#19
20240151239
2024-05-09

Multistage centrifugal compressor

#20
20240133390
2024-04-25

Gas bearing management for a compressor

#21
20240060497
2024-02-22

METHOD FOR EFFICIENT PART LOAD COMPRESSOR OPERATION

#22
20230323886
2023-10-12

TWO STAGE MIXED-FLOW COMPRESSOR

#23
20230304501
2023-09-28

MULTI-STAGE CENTRIFUGAL COMPRESSOR

#24
20230213038
2023-07-06

Gas bearing management for a compressor

#25
20230213037
2023-07-06

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

#26
20230175513
2023-06-08

Compressor rotor structure and method for arranging said rotor structure

#27
20230144453
2023-05-11

Ceiling fan blade

#28
20230133059
2023-05-04

Compressor rotor having seal elements

#29
20230125483
2023-04-27

Compressor rotor structure

#30
20230106824
2023-04-06

Air compressor for vehicle

#31
20220403853
2022-12-22

IMPELLER AND CENTRIFUGAL COMPRESSOR

#32
20220372992
2022-11-24

ROTATING MACHINERY

#33
20220243732
2022-08-04

Multi-stage rotor

#34
20220154733
2022-05-19

Permanent magnet direct-drive slurry pump based on gas film drag reduction

#35
20220145898
2022-05-12

Impeller of rotating machine and rotating machine

#36
20220065255
2022-03-03

MULTISTAGE CENTRIFUGAL PUMP FOR CONVEYING A FLUID

#37
20210324869
2021-10-21

High energy density turbomachines

#38
20210277903
2021-09-09

Integrated gas compressor

#39
20210164485
2021-06-03

Centrifugal multistage compressor

#40
20210040958
2021-02-11

CENTRIFUGAL COMPRESSOR ACHIEVING HIGH PRESSURE RATIO

#41
20210010478
2021-01-14

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

#42
20190368543
2019-12-05

High load capacity hybrid foil bearing

#43
20190323509
2019-10-24

Fluid compressor

#44
20190178255
2019-06-13

VAPOR CYCLE COMPRESSOR WITH VARIABLE INLET/OUTLET GEOMETRY

#45
20190170155
2019-06-06

Dual impeller

#46
20190136869
2019-05-09

Rotary machine and diaphragm

#47
20190136862
2019-05-09

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

#48
20190085859
2019-03-21

ROTATING MACHINE COMPRISING A SEAL RING DAMPING SYSTEM

#49
20190072108
2019-03-07

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

#50
20190063457
2019-02-28

Centrifugal compressor

#51
20190003483
2019-01-03

Compressor wheel and fluid compression device comprising the same

#52
20180372121
2018-12-27

Multi-stage centrifugal compressor

#53
20180355791
2018-12-13

AXI-CENTRIFUGAL COMPRESSOR

#54
20180347584
2018-12-06

Extended sculpted twisted return channel vane arrangement

#55
20180347571
2018-12-06

Centrifugal compressor

#56
20180313360
2018-11-01

Centrifugal impeller for a turbine engine

#57
20180283402
2018-10-04

Rotor balance adjustment method

#58
20180209427
2018-07-26

LNG PLANT INCLUDING AN AXIAL COMPRESSOR AND A CENTRIFUGAL COMPRESSOR

#59
20180195520
2018-07-12

Turbo compressor

#60
20180149167
2018-05-31

Turbomachinery gasket and a turbomachinery provided with said gasket

#61
20180142694
2018-05-24

Centrifugal compressor having an inter-stage sealing arrangement

#62
20180073779
2018-03-15

CENTRIFUGAL COMPRESSOR

#63
20180066674
2018-03-08

CENTRIFUGAL COMPRESSOR

#64
20180058460
2018-03-01

Compressor and the compressor controlling method

#65
20180051745
2018-02-22

High load capacity hybrid foil bearing

#66
20180038380
2018-02-08

Centrifugal compressor having a casing with an adjustable clearance and connections for a variable flow rate cooling medium, impeller clearance control apparatus for centrifugal compressor, and impeller clearance control method for centrifugal compressor

#67
20180023589
2018-01-25

Centrifugal compressor

#68
20170370364
2017-12-28

Centrifugal compressor assembly and method of operation with an airconditioner

#69
20170321713
2017-11-09

COMPRESSOR HAVING A SEALING CHANNEL

#70
20170276070
2017-09-28

AXI-CENTRIFUGAL COMPRESSOR

#71
20170248154
2017-08-31

CENTRIFUGAL COMPRESSOR

#72
20170211595
2017-07-27

Extracting dry gas from a wet-gas compressor

#73
20170184130
2017-06-29

Dry gas extraction device and method

#74
20170089350
2017-03-30

COMPRESSOR SYSTEM WITH GROOVED EXPANSION JOINT

#75
20170074280
2017-03-16

Counter-rotating compressor

#76
20170037866
2017-02-09

Impeller and rotating machine provided with same

#77
20170023021
2017-01-26

Turbo machine

#78
20160376021
2016-12-29

Auxiliary power unit with intercooler

#79
20160327050
2016-11-10

DIAPHRAGM AND CENTRIFUGAL ROTATING MACHINE

#80
20160327049
2016-11-10

MULTI-STAGE COMPRESSION SYSTEM AND METHOD OF OPERATING THE SAME

#81
20160305450
2016-10-20

Multi-stage electric centrifugal compressor

#82
20160290345
2016-10-06

Motor-compressor with stage impellers integrated in the motor-rotors

#83
20160238019
2016-08-18

GAS PIPELINE CENTRIFUGAL COMPRESSOR AND GAS PIPELINE

#84
20160222980
2016-08-04

Liquid tolerant impeller for centrifugal compressors

#85
20160222970
2016-08-04

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

#86
20160201687
2016-07-14

Multistage centrifugal compressor

#87
20160195100
2016-07-07

Device for generating a dynamic axial thrust to balance the overall axial thrust of a radial rotating machine

#88
20160177954
2016-06-23

MULTI-STAGE CENTRIFUGAL COMPRESSOR AND AIR CONDITIONING UNIT

#89
20160131155
2016-05-12

Geared centrifugal compressor with pressure adjustment portion to balance axial thrust

#90
20160123351
2016-05-05

Boosting system, and boosting method of gas

#91
20160123342
2016-05-05

Systems and methods to clamp an impeller to a compressor shaft

#92
20160076545
2016-03-17

System and method for sidestream mixing

#93
20160032937
2016-02-04

Gas turbine engine axial drum-style compressor rotor assembly

#94
20160017888
2016-01-21

Centrifugal fluid machine

#95
20150377244
2015-12-31

SYSTEM AND METHOD FOR COMPRESSING AIR

#96
20150345507
2015-12-03

Compressor and turbo chiller

#97
20150322961
2015-11-12

Rotor for a radial compressor and a method for construction thereof

#98
20150322952
2015-11-12

Wet gas compressor and method

#99
20150308453
2015-10-29

Centrifugal rotation machine

#100
20140093396
2014-04-03

Gas compressor control system preventing vibration damage

#101
20130011247
2013-01-10

CENTRIFUGAL FAN WITH A MULTISTAGE IMPELLER

#102
20120156026
2012-06-21

Air cycle machine compressor rotor

#103
20120102969
2012-05-03

Centrifugal compressor with bleed flow splitter for a gas turbine engine

#104
20120027599
2012-02-02

Impeller and rotary machine

#105
20110262284
2011-10-27

Stack rotor with tie rod and bolted flange and method

#106
20110097190
2011-04-28

Rotation device

#107
20110008186
2011-01-13

High-pressure compression unit for process fluids for industrial plant and a related method of operation

#108
20100296916
2010-11-25

Gas compressor

#109
20090205362
2009-08-20

Centrifugal compressor assembly and method

#110
20080219843
2008-09-11

Centrifugal impeller with forward and reverse flow paths

#111
20070189905
2007-08-16

MULTI-STAGE COMPRESSION SYSTEM AND METHOD OF OPERATING THE SAME

#112
20070154304
2007-07-05

Fluid transfer controllers having a rotor assembly with multiple sets of rotor blades arranged in proximity and about the same hub component and further having barrier components configured to form passages for routing fluid through the multiple sets of rotor blades

#113
20060263214
2006-11-23

Centrifugal impeller with forward and reverse flow paths

#114
18409441
2024-10-29

Axially nested compressors