ClassID:

142723

F04B9/1095 - CPC Classification

Classification description:

Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers having two or more pumping chambers in series

Recent Application in this class:
#1
20260139668
2026-05-21

RECIPROCATING PUMP POWER END WITH MONOLITHIC CORE

#2
20250389269
2025-12-25

RECIPROCATING PUMP POWER END WITH MONOLITHIC CORE

#3
20250067283
2025-02-27

INTENSIFICATION SYSTEM AND METHOD

#4
20230093139
2023-03-23

Capacitive liquid leak detection device

#5
20210062628
2021-03-04

Method and apparatus for producing well fluids

#6
20200271110
2020-08-27

Capacitive liquid leak detection device

#7
20200086039
2020-03-19

Hydraulically actuated pump for fluid administration

#8
20190345922
2019-11-14

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

#9
20190154017
2019-05-23

Metering pump and metering system

#10
20190010936
2019-01-10

Reciprocating pump

#11
20180296752
2018-10-18

Double action infusion pump

#12
20180066640
2018-03-08

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

#13
20170035966
2017-02-09

Hydraulically actuated pump for fluid administration

#14
20160102658
2016-04-14

Metering pump and metering system

#15
20150343137
2015-12-03

Double action infusion pump

#16
20150328400
2015-11-19

Hydraulically actuated pump for fluid administration

#17
20140257097
2014-09-11

Double action infusion pump

#18
20140248160
2014-09-04

Positive displacement pump and operating method thereof

#19
20140219830
2014-08-07

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

#20
20140137963
2014-05-22

Integrated design fluid end suction manifold

#21
20140072454
2014-03-13

High pressure intensifiers

#22
20120301328
2012-11-29

Multistage piston compressor

#23
20100296949
2010-11-25

HIGH-EFFICIENCY PNEUMATIC DRIVE MOTOR SYSTEM

#24
20100217191
2010-08-26

Hydraulically actuated pump for fluid administration

#25
20100172771
2010-07-08

MULTIPHASE PUMP

#26
20090220358
2009-09-03

UNEQUAL LENGTH ALTERNATING HYDRAULIC CYLINDER DRIVE SYSTEM FOR CONTINUOUS MATERIAL OUTPUT FLOW WITH EQUAL MATERIAL OUTPUT PRESSURE

#27
20090198185
2009-08-06

Hydraulically actuated pump for long duration medicament administration

#28
20090157005
2009-06-18

Hydraulically actuated pump for long duration medicament administration

#29
20050119618
2005-06-02

Hydraulically actuated pump for long duration medicament administration

#30
20050013716
2005-01-20

High-pressure generating device