ClassID:

160324

F25J3/069 - 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 partial condensation characterised by the separated product stream separation of noble gases of helium

Recent Application in this class:
#1
20230391621
2023-12-07

CRYOGENIC PROCESS FOR CRUDE HELIUM RECOVERY FROM NATURAL GAS

#2
20230019514
2023-01-19

Gas purification method and device

#3
20220243982
2022-08-04

Compression and separation device and compression process

#4
20220205717
2022-06-30

RECOVERY OF NONCONDENSABLE GAS COMPONENTS FROM A GASEOUS MIXTURE

#5
20210354987
2021-11-18

HELIUM PURIFICATION PROCESS AND UNIT

#6
20200385269
2020-12-10

Helium purification process and unit

#7
20200088466
2020-03-19

Helium extraction from natural gas

#8
20180238618
2018-08-23

PRODUCTION OF HELIUM FROM A GAS STREAM CONTAINING HYDROGEN

#9
20180100696
2018-04-12

Facility and method for producing liquid helium

#10
20170045290
2017-02-16

Helium recovery from streams containing helium, carbon dioxide, and at least one of nitrogen and methane

#11
20160265842
2016-09-15

LIGHT GAS SEPARATION PROCESS AND SYSTEM

#12
20160231051
2016-08-11

Integrated process and apparatus for recovery of helium rich streams

#13
20160091245
2016-03-31

Apparatus and method for purifying gases and method of regenerating the same

#14
20150013349
2015-01-15

Low-temperature device for separating and purifying gas based on small-sized low-temperature refrigerating machine

#15
20140137599
2014-05-22

Helium Recovery From Natural Gas Streams

#16
20140033764
2014-02-06

Systems and methods for recovering helium from feed streams containing carbon dioxide

#17
20120111051
2012-05-10

Carbon dioxide removal process

#18
20090211297
2009-08-27

HELIUM PRODUCTION IN LNG PLANTS

#19
20070157662
2007-07-12

Method and apparatus for producing products from natural gas including helium and liquefied natural gas

#20
20060107691
2006-05-25

Light gas component separation from a carbon dioxide mixture

#21
19016762
2025-09-02

Progressively chilled gas separation tanks