ClassID:

160228

F25J3/04454 - 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 at least a triple pressure main column system a main column system not otherwise provided, e.g. serially coupling of columns or more than three pressure levels

Recent Application in this class:
#1
20230038170
2023-02-09

PROCESS AND PLANT FOR LOW-TEMPERATURE SEPARATION OF AIR

#2
20230034371
2023-02-02

Energy-efficient process for preparing nitrogen and oxygen for glass melting furnace

#3
20220090855
2022-03-24

Method and apparatus for producing high-purity nitrogen and low-purity oxygen

#4
20210381761
2021-12-09

Method and unit for low-temperature air separation

#5
20210348842
2021-11-11

System and method for recovery of nitrogen, argon, and oxygen in moderate pressure cryogenic air separation unit

#6
20210123671
2021-04-29

METHOD AND APPARATUS FOR SEPARATING AIR BY CRYOGENIC DISTILLATION

#7
20170299261
2017-10-19

Liquid nitrogen production

#8
20170030635
2017-02-02

AIR FRACTIONATION PLANT, OPERATING METHOD AND CONTROL FACILITY

#9
20160298900
2016-10-13

Process and apparatus for separating air by cryogenic distillation

#10
20160245586
2016-08-25

Method and device for separating air by cryogenic distillation

#11
20140223959
2014-08-14

Method and device for the cryogenic decomposition of air

#12
20140053601
2014-02-27

Method and apparatus for separating air by cryogenic distillation

#13
20130219959
2013-08-29

Process and apparatus for the separation of air by cryogenic distillation

#14
20130047666
2013-02-28

METHOD AND DEVICE FOR OBTAINING PRESSURIZED NITROGEN AND PRESSURIZED OXYGEN BY LOW-TEMPERATURE SEPARATION OF AIR

#15
20120285197
2012-11-15

PROCESS AND UNIT FOR THE SEPARATION OF AIR BY CRYOGENIC DISTILLATION

#16
20120118006
2012-05-17

Method and apparatus for separating air by cryogenic distillation

#17
20110146344
2011-06-23

Process and apparatus for the separation of air by cryogenic distillation

#18
20110146343
2011-06-23

Process and apparatus for the separation of air by cryogenic distillation

#19
20100071412
2010-03-25

Method and apparatus for producing high purity oxygen

#20
20090188280
2009-07-30

PROCESS AND DEVICE FOR LOW-TEMPERATURE SEPARATION OF AIR

#21
20080011015
2008-01-17

System and apparatus for providing low pressure and low purity oxygen

#22
12800637
2017-08-08

Liquid nitrogen production