ClassID:

160487

F25J2245/40 - CPC Classification

Classification description:

Processes or apparatus involving steps for recycling of process streams the recycled stream being air

Recent Application in this class:
#1
20250305764
2025-10-02

PROCESS FOR REMOTE LOX/LIN PRODUCTION BY HPAIR TURBO EXPANSION

#2
20240255220
2024-08-01

METHOD AND PLANT FOR PRODUCING AMMONIA

#3
20240053097
2024-02-15

AIR SEPARATION UNIT AND AIR SEPARATION METHOD

#4
20240019207
2024-01-18

SYSTEM AND METHOD FOR GAS LIQUEFICATION

#5
20230341181
2023-10-26

NITROGEN GENERATING DEVICE AND NITROGEN GENERATING METHOD

#6
20220282914
2022-09-08

Process and apparatus for the separation of air by cryogenic distillation

#7
20220074657
2022-03-10

Method for starting up a cryogenic air separation unit and associated air separation unit

#8
20220074656
2022-03-10

APPARATUS AND METHOD FOR SEPARATING AIR BY CRYOGENIC DISTILLATION

#9
20210364232
2021-11-25

PROCESS FOR SUPPLYING OXYGEN AND/OR NITROGEN AND ALSO ARGON TO A GEOGRAPHIC ZONE

#10
20210140708
2021-05-13

CRYOGENIC RECTIFICATION PROCESS-BASED METHOD FOR PRODUCING AIR PRODUCT, AND AIR SEPARATION SYSTEM

#11
20210095922
2021-04-01

Method for the production of air gases by the cryogenic separation of air with improved front end purification and air compression

#12
20200191334
2020-06-18

Method for reheating an atmospheric vaporizer using a gas originating from a cryogenic air separation unit

#13
20190293348
2019-09-26

Nitrogen production method and nitrogen production apparatus

#14
20190049177
2019-02-14

Apparatus and method for separation of air by cryogenic distillation

#15
20190041130
2019-02-07

Method and device for separating air by cryogenic distillation

#16
20190041129
2019-02-07

Device and method for separating air by cryogenic distillation

#17
20180299195
2018-10-18

Method for controlling production of high pressure gaseous oxygen in an air separation unit

#18
20180187837
2018-07-05

Method for reheating an atmospheric vaporizer using a gas originating from a cryogenic air-separation unit

#19
20180038644
2018-02-08

Method for liquefaction of industrial gas by integration of methanol plant and air separation unit

#20
20180038641
2018-02-08

Method for liquefaction of industrial gas by integration of methanol plant and air separation unit

#21
20180038638
2018-02-08

Integration of industrial gas site with liquid hydrogen production

#22
20170276428
2017-09-28

Method for the production of air gases by the cryogenic separation of air with improved front end purification and air compression

#23
20170211882
2017-07-27

PRODUCTION OF AN AIR PRODUCT IN AN AIR SEPARATION PLANT WITH COLD STORAGE UNIT

#24
20170211879
2017-07-27

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

#25
20170205141
2017-07-20

Method for producing pressurized gaseous oxygen through the cryogenic separation of air

#26
20170191752
2017-07-06

Air purification units

#27
20170115053
2017-04-27

Air separation system and method

#28
20150345857
2015-12-03

Air separation system and method

#29
20150226094
2015-08-13

Method and device for generating electrical energy

#30
20140202208
2014-07-24

Method and device for separating a gas mixture by cryogenic distillation

#31
20140000289
2014-01-02

Defroster for oxygen liquefier

#32
20130192301
2013-08-01

Method and system for air separation using a supplemental refrigeration cycle

#33
20130086940
2013-04-11

Air separation plant and process operating by cryogenic distillation

#34
20130019634
2013-01-24

AIR SEPARATION METHOD AND APPARATUS

#35
20120260693
2012-10-18

COMPRESSION METHOD AND AIR SEPARATION

#36
20120192590
2012-08-02

System and method for liquefying and storing a fluid

#37
20120174624
2012-07-12

METHOD FOR OPERATING AT LEAST ONE AIR SEPARATION APPARATUS AND OXYGEN CONSUMPTION UNIT

#38
20120131952
2012-05-31

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

#39
20120131951
2012-05-31

AIR LIQUEFACTION SEPARATION METHOD AND APPARATUS

#40
20120118006
2012-05-17

Method and apparatus for separating air by cryogenic distillation

#41
20110289964
2011-12-01

Separation method and apparatus

#42
20110259046
2011-10-27

Process and apparatus for the separation of air by cryogenic distillation

#43
20110197630
2011-08-18

Process and Apparatus for the Separation of Air by Cryogenic Distillation

#44
20110132032
2011-06-09

LIQUID AIR METHOD AND APPARATUS

#45
20110073051
2011-03-31

Oxyfuel combustion boiler plant and operation method of oxyfuel combustion boiler plant

#46
20110000256
2011-01-06

System and method for liquid air production, power storage and power release

#47
20100319371
2010-12-23

METHOD AND APPARATUS FOR DRYING COMPRESSED GASES

#48
20100313600
2010-12-16

Method and apparatus for pressurized product production

#49
20100101231
2010-04-29

PROCESS FOR A HIGH EFFICIENCY AND LOW EMISSION OPERATION OF POWER STATIONS AS WELL AS FOR STORAGE AND CONVERSION OF ENERGY

#50
20100011811
2010-01-21

Method and device for separating a gas mixture by cryogenic distillation

#51
20090293503
2009-12-03

System and method for liquid air production, power storage and power release

#52
20090293502
2009-12-03

System and method for liquid air production, power storage and power release

#53
20090282840
2009-11-19

ENERGY STORAGE AND GENERATION

#54
20090241595
2009-10-01

DISTILLATION METHOD AND APPARATUS

#55
20090205368
2009-08-20

Distillation method and apparatus

#56
20090013869
2009-01-15

PROCESS AND DEVICE FOR PRODUCING A PRESSURIZED GASEOUS PRODUCT BY LOW-TEMPERATURE SEPARATION OF AIR

#57
20080134718
2008-06-12

Separation method and apparatus

#58
20070283719
2007-12-13

Air separation method

#59
20070130992
2007-06-14

Cyrogenic Air Separation Process and Apparatus

#60
20060254312
2006-11-16

Method and installation for producing, in gaseous form and under high pressure, at least one fluid chosen from oxygen, argon and nitrogen by cryogenic distillation of air

#61
20050256335
2005-11-17

Providing gases to aromatic carboxylic acid manufacturing processes

#62
20050132746
2005-06-23

Cryogenic air separation process and apparatus