ClassID:

160224

F25J3/0443 - 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 using a dual pressure main column system A main column system not otherwise provided, e.g. a modified double column flowsheet

Recent Application in this class:
#1
20240377131
2024-11-14

PLANT AND PROCESS FOR LOW-TEMPERATURE FRACTIONATION OF AIR

#2
20240353173
2024-10-24

ULTRA-HIGH-PURITY OXYGEN PRODUCTION METHOD AND ULTRA-HIGH-PURITY OXYGEN PRODUCTION APPARATUS

#3
20240183610
2024-06-06

METHOD AND PLANT FOR LOW TEMPERATURE FRACTIONATION OF AIR

#4
20240053097
2024-02-15

AIR SEPARATION UNIT AND AIR SEPARATION METHOD

#5
20230043513
2023-02-09

PROCESS AND PLANT FOR PROVISION OF OXYGEN PRODUCT

#6
20220090856
2022-03-24

APPARATUS FOR THE SEPARATION OF AIR BY CRYOGENIC DISTILLATION COMPRISING THREE COLUMNS, INCLUDING TWO CONCENTRIC COLUMNS

#7
20220082325
2022-03-17

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

#8
20200318898
2020-10-08

Cryogenic air separation apparatus

#9
20200182543
2020-06-11

Gas production system

#10
20200132368
2020-04-30

Apparatus for the distillation of air by cryogenic distillation

#11
20190072325
2019-03-07

System and method for recovery of neon and helium from an air separation unit

#12
20170211879
2017-07-27

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

#13
20170205142
2017-07-20

Method for obtaining an air product in an air separation plant and air separation plant

#14
20170115054
2017-04-27

System and method for providing refrigeration to a cryogenic separation unit

#15
20160131425
2016-05-12

System and method for production of crude argon by cryogenic rectification of air

#16
20150316318
2015-11-05

System and method for production of argon by cryogenic rectification of air

#17
20150241121
2015-08-27

Method and apparatus for separating air by cryogenic distillation

#18
20130139547
2013-06-06

AIR SEPARATION METHOD AND APPARATUS

#19
20130139546
2013-06-06

AIR SEPARATION METHOD AND APPARATUS

#20
20110146343
2011-06-23

Process and apparatus for the separation of air by cryogenic distillation

#21
20090120128
2009-05-14

Low Temperature Air Fractionation with External Fluid

#22
20090107177
2009-04-30

PROCESS AND DEVICE FOR LOW TEMPERATURE AIR FRACTIONATION

#23
20080289362
2008-11-27

PROCESS AND APPARATUS FOR LOW-TEMPERATURE AIR FRACTIONATION

#24
20070204652
2007-09-06

PROCESS AND APPARATUS FOR PRODUCING ULTRAPURE OXYGEN