Patents-Review.com
ClassID:

142835 ⎘

F04B25/04 - CPC Classification

Classification description:

Multi-stage pumps having cylinders coaxial with, or parallel or inclined to, main shaft axis

Recent Application in this class:
#1
20250347446
2025-11-13

ECONOMIZER INJECTION IN A RECIPROCATING COMPRESSOR

 #2
20240410360
2024-12-12

REFRIGERANT COMPRESSOR

 #3
20230041180
2023-02-09

ECONOMIZER INJECTION IN A RECIPROCATING COMPRESSOR

 #4
20220018339
2022-01-20

Variable stroke pump

 #5
20210404457
2021-12-30

Refrigerant compressor with stator elastic support

 #6
20210140415
2021-05-13

Variable stroke pump

 #7
20210054845
2021-02-25

Multi-stage compressor and method of controlling the same

 #8
20200263676
2020-08-20

Displacer assembly and cryocooler

 #9
20190383278
2019-12-19

DISCHARGE VALVE AND COMPRESSOR HAVING THE SAME

 #10
20190345922
2019-11-14

Compressors for natural gas and related devices, systems, and methods

 #11
20190195211
2019-06-27

Apparatus for reducing suction pulsation and swash plate type compressor comprising same

 #12
20190154022
2019-05-23

Compressor

 #13
20190017494
2019-01-17

Wind energy to compressed fluid conversion and energy system

 #14
20180073493
2018-03-15

Spin pump with spun-epicyclic geometry having piston bores capped with caps including ducts or valves within the rotor

 #15
20180066640
2018-03-08

Compressors for natural gas and related devices, systems, and methods

 #16
20180003165
2018-01-04

Multistage compressor with magnetically actated compression stage

 #17
20170254321
2017-09-07

MULTI-CHAMBER WITH ULTRA-HIGH-PRESSURE OR HYDRAULIC MOTOR COMPRESSORS OR MOTOR PUMPS FOR COMPRESSING GAS OR LIQUID AT ULTRA-HIGH PRESSURE, FORMED BY SEVERAL DIFFERENT-SIZED CONCENTRIC CHAMBERS, WHEREIN EACH CHAMBER CONTAINS SMALLER CHAMBERS

 #18
20160265524
2016-09-15

High-pressure air pump

 #19
20160186757
2016-06-30

Compressor with a closed loop water cooling system

 #20
20160185473
2016-06-30

Packaging machine with a fluid pump assembly

 #21
20160169216
2016-06-16

Compressor

 #22
20150337821
2015-11-26

Multistage air pump

 #23
20150300332
2015-10-22

Manifold including mounting plate for fluid end block of reciprocating pump assembly

 #24
20150233362
2015-08-20

Turn-back coaxial gas pressurizing pump and gas pressurizing method

 #25
20150211505
2015-07-30

DOUBLE-HEADED PISTON TYPE SWASH PLATE COMPRESSOR

 #26
20150098841
2015-04-09

Spin pump with spun-epicyclic geometry

 #27
20150078928
2015-03-19

Compressor, air conditioner system comprising the compressor and heat pump water heater system

 #28
20140311596
2014-10-23

Check valve for variable capacity compressor of vehicle

 #29
20140241910
2014-08-28

SUBMERSIBLE PUMP

 #30
20140219830
2014-08-07

Compressors for natural gas and related devices, systems, and methods

 #31
20130287611
2013-10-31

Double acting refrigeration compressor

 #32
20120282114
2012-11-08

AIR PUMP

 #33
20110197752
2011-08-18

AXIAL PISTON MULTI CIRCUIT MACHINE

 #34
20090047144
2009-02-19

Fluid compressor and motor vehicle refuelling apparatus

 #35
20070196216
2007-08-23

WOBBLE PLATE COMPRESSOR

 #36
14018854
2016-09-06

Liquid sealed pump