ClassID:

142954

F04B39/0011 - CPC Classification

Classification description:

Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups - adaptations of pistons liquid pistons

Recent Application in this class:
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Mechanical liquid piston slow expansion compressor

#2
20230003205
2023-01-05

Plasma compression driver

#3
20220099342
2022-03-31

Fuel driven near isothermal compressor

#4
20210033083
2021-02-04

METHOD FOR OPERATING A COMPRESSOR, AND COMPRESSOR

#5
20200232449
2020-07-23

BOOSTING DEVICE

#6
20190040851
2019-02-07

Multiphase production boost method and system

#7
20190003425
2019-01-03

System for supplying compressed gas to several gas-fed devices

#8
20180080441
2018-03-22

Method and system for multi-stage compression of a gas using a liquid

#9
20170016435
2017-01-19

Reciprocating compressor and hydrogen supply system

#10
20170002803
2017-01-05

STATIC LIQUID PISTON COMPRESSOR AND EXPANDER SYSTEMS AND METHODS FOR SAME

#11
20160305413
2016-10-20

PRESSURE VESSEL GRADED MEDIA FOR HEAT EXCHANGE IN A COMPRESSION SYSTEM

#12
20160160852
2016-06-09

Multiphase production boost method and system

#13
20160097381
2016-04-07

Method and system for multi-stage compression of a gas using a liquid

#14
20160079830
2016-03-17

Compressed air energy storage unit with induction pump and method for the production of such a compressed air energy storage unit

#15
20150132150
2015-05-14

Method and system for compressing gas using a liquid

#16
20140314600
2014-10-23

LIQUID PUMP USING ELASTOMERIC PISTON, PISTON ASSEMBLY AND MANUFACTURING METHOD THEREOF

#17
20140041526
2014-02-13

Piston head for french press coffee maker

#18
20130323087
2013-12-05

Compressor and method for compressing technical gases

#19
20130213213
2013-08-22

Liquid piston arrangement with plate exchanger for the quasi-isothermal compression and expansion of gases

#20
20130118362
2013-05-16

Compression of a water-saturated medium

#21
20120301328
2012-11-29

Multistage piston compressor

#22
20120116099
2012-05-10

Method of conveying liquids

#23
20110052430
2011-03-03

FLUID MACHINE

#24
20100003150
2010-01-07

Wear rings for downhole pump

#25
20080298979
2008-12-04

Engine

#26
20080246222
2008-10-09

Displacer unit with a valve plate body

#27
20060144229
2006-07-06

Apparatus and method for pressurising biogas in a gas washer

#28
20050265875
2005-12-01

Wear rings for downhole pump

#29
19176828
2026-03-24

Method and apparatus to compress hydrogen gas with vapor control

#30
17217704
2023-03-21

Electrowetting-based pump