Patents-Review.com
ClassID:

143644 ⎘

F04C23/005 - CPC Classification

Classification description:

Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of dissimilar working principle

Sub-classes:
Recent Application in this class:
#1
20250361864
2025-11-27

Two-Stage Pump

 #2
20250155088
2025-05-15

HYDROGEN COMPRESSOR

 #3
20250137460
2025-05-01

DUAL-MODE COMPRESSOR

 #4
20240328419
2024-10-03

SCREW PUMP, SCREW ROTOR, METHOD OF MANUFACTURING A SCREW ROTOR, AND USE OF A SCREW PUMP OR A SCREW ROTOR

 #5
20230417461
2023-12-28

COMPRESSOR DEVICE AND REFRIGERATION APPARATUS

 #6
20230003208
2023-01-05

Redundant pumping system and pumping method by means of this pumping system

 #7
20220316480
2022-10-06

ROTARY SCREW COMPRESSOR

 #8
20220316474
2022-10-06

Scroll compressor and air conditioner having same

 #9
20220145886
2022-05-12

Dry pump for gas and set of a plurality of dry pumps for gas

 #10
20210285448
2021-09-16

Fluid delivery device

 #11
20210140689
2021-05-13

Compressor and refrigeration cycle device

 #12
20210056244
2021-02-25

METHOD OF MODELING, SIMULATION AND FAULT INJECTION FOR COMBINED HIGH PRESSURE GEAR PUMP FOR AEROENGINE

 #13
20200408211
2020-12-31

Device and method for evacuating a chamber and purifying the gas extracted from said chamber

 #14
20200200641
2020-06-25

Leak detector and leak detection method for leak-testing objects

 #15
20200072230
2020-03-05

Integrally geared compressor having a combination of centrifugal and positive displacement compression stages

 #16
20200018313
2020-01-16

SCROLL FLUID MACHINE

 #17
20190338775
2019-11-07

Motor-operated compressor

 #18
20180085799
2018-03-29

Exhaust system, semiconductor manufacturing equipment, and method for operating the exhaust system

 #19
20180023516
2018-01-25

Natural gas fueled vehicle

 #20
20170292525
2017-10-12

Integrally geared compressor having a combination of centrifugal and positive displacement compression stages

 #21
20170122319
2017-05-04

Vacuum pump system

 #22
20170089637
2017-03-30

Parallel compression in LNG plants using a positive displacement compressor

 #23
20170089624
2017-03-30

HERMETIC COMPRESSOR AND VAPOR COMPRESSION-TYPE REFRIGERATION CYCLE DEVICE INCLUDING THE HERMETIC COMPRESSOR

 #24
20170089339
2017-03-30

Pumping method in a system of vacuum pumps and system of vacuum pumps

 #25
20170051744
2017-02-23

Three stage scroll vacuum pump

 #26
20170045051
2017-02-16

PUMPING METHOD IN A SYSTEM FOR PUMPING AND SYSTEM OF VACUUM PUMPS

 #27
20160377303
2016-12-29

High efficiency air delivery system and method

 #28
20160377095
2016-12-29

Discharge casing insert for pump performance characteristics control

 #29
20160356273
2016-12-08

Vacuum pump system with light gas pumping and leak detection apparatus comprising the same

 #30
20160348679
2016-12-01

Vacuum pump system including scroll pump and secondary pumping mechanism

 #31
20160153448
2016-06-02

Turbocharger generating vacuum negative pressure, vacuum negative pressure supply type brake system using the same, and control method thereof

 #32
20160123327
2016-05-05

Rotary screw compressor rotor having work extraction mechanism

 #33
20160061203
2016-03-03

Scroll compressor

 #34
20160032925
2016-02-04

Revolving piston rotary compressor with stationary crankshaft

 #35
20150369243
2015-12-24

Spiral compressor

 #36
20150354572
2015-12-10

Hermetic compressor and vapor compression-type refrigeration cycle device including the hermetic compressor

 #37
20150329125
2015-11-19

Air compressor unit for vehicle

 #38
20150204332
2015-07-23

Pumping unit and method for controlling such a pumping unit

 #39
20150152871
2015-06-04

Method and pump arrangement for evacuating a chamber

 #40
20150132155
2015-05-14

Pump device with a vacuum pump and a lubrication pump

 #41
20140294641
2014-10-02

Scroll fluid machine with cooling duct

 #42
20140271258
2014-09-18

Temperature control for compressor

 #43
20140010695
2014-01-09

Piston and scroll compressor assembly

 #44
20120261011
2012-10-18

ENERGY REDUCTION MODULE USING A DEPRESSURIZING VACUUM APPARATUS FOR VACUUM PUMP

 #45
20120234007
2012-09-20

RANKINE CYCLE APPARATUS

 #46
20120219443
2012-08-30

Vacuum pumping system having an ejector and check valve

 #47
20120189479
2012-07-26

Spherical expansion compressor adapted to variable working conditions

 #48
20110256007
2011-10-20

Three stage scroll vacuum pump

 #49
20110164990
2011-07-07

Multi-stage compressor

 #50
20110143311
2011-06-16

Combination vertical rotary vane suction pump and liquid separator

 #51
20110100011
2011-05-05

High efficiency thermodynamic system

 #52
20100269536
2010-10-28

Expander-compressor unit

 #53
20100263404
2010-10-21

Expander-compressor unit

 #54
20100221134
2010-09-02

Scroll fluid machine

 #55
20100209259
2010-08-19

EVACUATION APPARATUS

 #56
20100143172
2010-06-10

Multistage compressor for a CO2 cycle that includes a rotary compressing mechanism and a scroll compressing mechanism

 #57
20100132398
2010-06-03

Fluid machine and refrigeration cycle apparatus having the same

 #58
20100083690
2010-04-08

Multistage compressor having an oil separator plate

 #59
20100064707
2010-03-18

Multi-stage compressor

 #60
20090304522
2009-12-10

Installation for high pressure compression with several stages

 #61
20090269231
2009-10-29

Method of Pumping Gas

 #62
20090242046
2009-10-01

Valve module

 #63
20090169400
2009-07-02

Fan hub integrated vacuum pump system

 #64
20090120405
2009-05-14

System with a compressor and with a consumer in a motor vehicle

 #65
20090104062
2009-04-23

Two stage compressor having rotary and scroll type compression mechanisms

 #66
20090104060
2009-04-23

COMPRESSOR

 #67
20080173129
2008-07-24

Crankshaft having first and second eccentric portions

 #68
20080166247
2008-07-10

Single-Shaft Vacuum Positive Displacement Pump

 #69
20080080984
2008-04-03

EVACUATION APPARATUS

 #70
20080080982
2008-04-03

EVACUATION APPARATUS

 #71
20080063536
2008-03-13

Method of controlling the stopping operation of vacuum pump and device therefor

 #72
20080025858
2008-01-31

Composite dry vacuum pump having roots and screw rotor

 #73
20070104587
2007-05-10

Evacuation apparatus

 #74
20070020111
2007-01-25

Fast enclosure pumping with power saving

 #75
20060182638
2006-08-17

Vacuum device and vacuum pump

 #76
20060083651
2006-04-20

Composite dry vacuum pump having roots rotor and screw rotor

 #77
20060078451
2006-04-13

Scroll compressor

 #78
20060033341
2006-02-16

Waterwheel powered air delivery device

 #79
20050232783
2005-10-20

Vacuum pump and method for generating sub-pressure

 #80
20050217732
2005-10-06

Apparatus for controlling the pressure in a process chamber and method of operating same

 #81
20050000436
2005-01-06

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

 #82
14261585
2016-08-23

Drive system having a variable output pump