F25J3/0429 - CPC Classification Index

ClassID:

160201 ⎘

F25J3/0429 - CPC Classification

Classification description:

Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air; Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column

Sub-classes:

F25J3/04296 » {Claude expansion, i.e. expanded into the main or high pressure column} 142
F25J3/04303 » {Lachmann expansion, i.e. expanded into oxygen producing or low pressure column} 114

Recent Application in this class:

20250334332

2025-10-30

LIQUID NITROGEN GENERATOR AND PROCESS

20220082325

2022-03-17

Multistage liquid storage-type condenser-evaporator and nitrogen production device using the same

20210381761

2021-12-09

Method and unit for low-temperature air separation

20200132368

2020-04-30

Apparatus for the distillation of air by cryogenic distillation

20190293348

2019-09-26

Nitrogen production method and nitrogen production apparatus

20190234415

2019-08-01

Method for compressing an incoming feed air stream in a cryogenic air separation plant

20190234414

2019-08-01

Method for compressing an incoming feed air stream in a cryogenic air separation plant

20190234413

2019-08-01

Method for compressing an incoming feed air stream in a cryogenic air separation plant

20190003766

2019-01-03

System and method for rare gas recovery

#10

20180142950

2018-05-24

LNG integration with cryogenic unit

#11

20180017322

2018-01-18

Method and apparatus for producing compressed nitrogen and liquid nitrogen by cryogenic separation of air

#12

20180017321

2018-01-18

METHOD FOR RECOVERING GASEOUS NITROGEN FROM THE WASTE NITROGEN STREAM OF AN AIR SEPARATION UNIT

#13

20170234614

2017-08-17

Method for the cryogenic separation of air and air separation plant

#14

20170211879

2017-07-27

Process and apparatus for producing pressurized gaseous nitrogen by cryogenic separation of air

#15

20160265841

2016-09-15

System and method for generation of oxygen by low-temperature air separation

#16

20160033197

2016-02-04

Method for compressing an incoming feed air stream in a cryogenic air separation plant

#17

20160033196

2016-02-04

Method for compressing an incoming feed air stream in a cryogenic air separation plant

#18

20160003537

2016-01-07

Air separation method and air separation apparatus

#19

20150226094

2015-08-13

Method and device for generating electrical energy

#20

20140093396

2014-04-03

Gas compressor control system preventing vibration damage

#21

20130219959

2013-08-29

Process and apparatus for the separation of air by cryogenic distillation

#22

20130000352

2013-01-03

AIR SEPARATION UNIT AND SYSTEMS INCORPORATING THE SAME

#23

20120131952

2012-05-31

METHOD FOR RECOVERING A GASEOUS PRESSURE PRODUCT BY LOW-TEMPERATURE SEPARATION OF AIR

#24

20110302956

2011-12-15

Rare gases recovery process for triple column oxygen plant

#25

20110289964

2011-12-01

Separation method and apparatus

#26

20110197630

2011-08-18

Process and Apparatus for the Separation of Air by Cryogenic Distillation

#27

20110146344

2011-06-23

Process and apparatus for the separation of air by cryogenic distillation

#28

20110146343

2011-06-23

Process and apparatus for the separation of air by cryogenic distillation

#29

20110138856

2011-06-16

SEPARATION METHOD AND APPARATUS

#30

20110120186

2011-05-26

Method and device for producing air gases in a gaseous and liquid form with a high flexibility and by cryogenic distillation

#31

20110011130

2011-01-20

Method And Apparatus For The Production Of Gas From Air In Highly Flexible Gaseous And Liquid Form By Cryogenic Distillation

#32

20080223076

2008-09-18

Cryogenic Distillation Method and Installation for Air Separation

#33

20080134718

2008-06-12

Separation method and apparatus

#34

20070130992

2007-06-14

Cyrogenic Air Separation Process and Apparatus

#35

20060272353

2006-12-07

Process and apparatus for the separation of air by cryogenic distillation

#36

20060021380

2006-02-02

Method and installation for production of noble gases and oxygen by means of cryrogenic air distillation

#37

20050132746

2005-06-23

Cryogenic air separation process and apparatus