ClassID:

160412

F25J2215/50 - CPC Classification

Classification description:

Processes characterised by the type or other details of the product stream Oxygen or special cases, e.g. isotope-mixtures or low purity O

Sub-classes:
Recent Application in this class:
#1
20260146790
2026-05-28

METHOD FOR INCREASING PRODUCTION FLEXIBILITY OF AN AIR SEPARATION UNIT

#2
20250346542
2025-11-13

Catalysts and processes for the direct production of liquid fuels from carbon dioxide and hydrogen

#3
20250314424
2025-10-09

Apparatus and Process for Improved Argon Recovery

#4
20250271208
2025-08-28

PROCESS AND PLANT FOR PROVIDING A NITROGEN PRODUCT, AN OXYGEN PRODUCT AND A HYDROGEN PRODUCT

#5
20250237431
2025-07-24

METHOD AND APPARATUS FOR COMPRESSING A GAS

#6
20250146746
2025-05-08

CRYOGENIC AIR RECTIFICATION SYSTEM, CONTROL UNIT, AIR SEPARATION UNIT AND METHOD OF CRYOGENICALLY SEPARATING AIR

#7
20240384928
2024-11-21

METHOD AND PLANT FOR PROVIDING A PRESSURIZED OXYGEN-RICH, GASEOUS AIR PRODUCT

#8
20240377131
2024-11-14

PLANT AND PROCESS FOR LOW-TEMPERATURE FRACTIONATION OF AIR

#9
20240377130
2024-11-14

LIQUEFIED GAS SUPPLY SYSTEM AND AIR SEPARATION UNIT COMPRISING SAME

#10
20240353174
2024-10-24

DUAL TEMPERATURE LIQUID OXYGEN SUBCOOLING IN AN AIR SEPARATION UNIT

#11
20240288218
2024-08-29

METHOD FOR PRODUCTION AND SUPPLY OF A DENSIFIED LIQUID OXYGEN PRODUCT FOR SPACE VEHICLE APPLICATIONS

#12
20240230221
2024-07-11

SYSTEM AND METHOD FOR CO-PRODUCTION OF A DENSIFIED LIQUID OXYGEN PRODUCT AND DENSIFIED LIQUID METHANE PRODUCT

#13
20240059626
2024-02-22

Catalysts and processes for the direct production of liquid fuels from carbon dioxide and hydrogen

#14
20240044578
2024-02-08

METHOD FOR SEPARATING AIR BY CRYOGENIC DISTILLATION

#15
20240035745
2024-02-01

System and method for cryogenic air separation using four distillation columns including an intermediate pressure column

#16
20230168031
2023-06-01

Systems For Extracting Oxygen From A Fluid

#17
20230104429
2023-04-06

Stable isotope concentration method

#18
20230090158
2023-03-23

METHOD AND APPARATUS FOR CRYOGENIC AIR SEPARATION

#19
20230082208
2023-03-16

OXYGEN LIQUEFIER DESIGN PHASING

#20
20230071359
2023-03-09

Catalysts and processes for the direct production of liquid fuels from carbon dioxide and hydrogen

#21
20230050296
2023-02-16

Cryogenic air separation unit with argon condenser vapor recycle

#22
20230034371
2023-02-02

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

#23
20230018749
2023-01-19

Integrated multicomponent refrigerant and air separation process for producing liquid oxygen

#24
20230017256
2023-01-19

INTEGRATED MULTICOMPONENT REFRIGERANT AND AIR SEPARATION PROCESS FOR PRODUCING LIQUID OXYGEN

#25
20230003445
2023-01-05

FULL LIQUID-PRODUCT AIR SEPARATION EQUIPMENT AND PROCESS THEREFOR

#26
20220252344
2022-08-11

Air separation device and air separation method

#27
20220205714
2022-06-30

METHOD FOR EFFICIENT COLD RECOVERY IN O2-H2 COMBUSTION TURBINE POWER GENERATION SYSTEM

#28
20220090855
2022-03-24

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

#29
20220074656
2022-03-10

APPARATUS AND METHOD FOR SEPARATING AIR BY CRYOGENIC DISTILLATION

#30
20210356205
2021-11-18

ENHANCEMENTS TO A MODERATE PRESSURE NITROGEN AND ARGON PRODUCING CRYOGENIC AIR SEPARATION UNIT

#31
20210340075
2021-11-04

Catalysts and processes for the direct production of liquid fuels from carbon dioxide and hydrogen

#32
20210310732
2021-10-07

Product gas supply quantity adjustment device and air separation apparatus comprising same

#33
20210278132
2021-09-09

Air separation device

#34
20210231368
2021-07-29

Systems for extracting oxygen from a fluid

#35
20200318898
2020-10-08

Cryogenic air separation apparatus

#36
20200271381
2020-08-27

PROCESS FOR UTILIZING OF MULTI STAGE COMPRESSORS INTERCOOLERS BLOWDOWN AS A COOLANT FOR PROCESS AIR

#37
20200132368
2020-04-30

Apparatus for the distillation of air by cryogenic distillation

#38
20190137173
2019-05-09

Method and System for Using a Target Gas Provided by a Gas Decomposition Device

#39
20190072326
2019-03-07

System and method for recovery of non-condensable gases such as neon, helium, xenon, and krypton from an air separation unit

#40
20190049178
2019-02-14

METHOD FOR DE-ICING A DEVICE FOR SEPARATING AIR BY CRYOGENIC DISTILLATION AND DEVICE ADAPTED TO BE DE-ICED USING THIS METHOD

#41
20190049177
2019-02-14

Apparatus and method for separation of air by cryogenic distillation

#42
20190041130
2019-02-07

Method and device for separating air by cryogenic distillation

#43
20190041129
2019-02-07

Device and method for separating air by cryogenic distillation

#44
20180003437
2018-01-04

Method for operating an air separation plant

#45
20180003435
2018-01-04

Apparatus for operating an air separation plant

#46
20180003434
2018-01-04

Apparatus for the production of air gases by the cryogenic separation of air

#47
20180003433
2018-01-04

Method for the production of air gases by the cryogenic separation of air

#48
20170241708
2017-08-24

Systems for extracting oxygen from a liquid

#49
20170234614
2017-08-17

Method for the cryogenic separation of air and air separation plant

#50
20170030637
2017-02-02

Method for the production of low pressure gaseous oxygen

#51
20170030636
2017-02-02

Apparatus for the production of low pressure gaseous oxygen

#52
20160138865
2016-05-19

Method and apparatus for separating a liquefiable gas mixture

#53
20160069611
2016-03-10

Method for obtaining an air product in an air separating system with temporary storage, and air separating system

#54
20150068247
2015-03-12

Distillation device

#55
20130068220
2013-03-21

Systems and methods for generating liquid oxygen for portable use

#56
20120067082
2012-03-22

METHOD AND APPARATUS FOR PRODUCING AT LEAST ONE ARGON-ENRICHED FLUID AND AT LEAST ONE OXYGEN-ENRICHED FLUID FROM A RESIDUAL FLUID

#57
20120055331
2012-03-08

System and method for controlling an air separation unit

#58
20110262314
2011-10-27

DEVICE FOR PRODUCING HYDROGEN FROM A PLASMA WITH ELECTRON CYCLOTRON RESONANCE

#59
20110262313
2011-10-27

DEVICE FOR PRODUCING HYDROGEN BY MEANS OF AN ELECTRON CYCLOTRON RESONANCE PLASMA

#60
20110100055
2011-05-05

Hybrid Air Separation Method with Noncryogenic Preliminary Enrichment and Cryogenic Purification Based on a Single Component Gas or Liquid Generator

#61
20100043490
2010-02-25

Method and apparatus for separating air

#62
20090266702
2009-10-29

Method and apparatus for enrichment of heavy oxygen isotopes

#63
20090223247
2009-09-10

Method of generating nitrogen and apparatus for use in the same

#64
20090120128
2009-05-14

Low Temperature Air Fractionation with External Fluid

#65
20090107177
2009-04-30

PROCESS AND DEVICE FOR LOW TEMPERATURE AIR FRACTIONATION

#66
20080307961
2008-12-18

CENTRIFUGAL SEPARATION OF RARE GASES

#67
20080271466
2008-11-06

Method and System for Purifying Liquified Gases

#68
20080121512
2008-05-29

Distillation apparatus

#69
20080011015
2008-01-17

System and apparatus for providing low pressure and low purity oxygen

#70
20060026988
2006-02-09

Energy efficient, inexpensive extraction of oxygen from ambient air for portable and home use

#71
20060000223
2006-01-05

Desiccant cartridge

#72
20050274142
2005-12-15

Cryogenically producing oxygen-enriched liquid and/or gaseous oxygen from atmospheric air

#73
20050129592
2005-06-16

Apparatus, method for enrichment of the heavy isotopes of oxygen and production method for heavy oxygen water

#74
20050044886
2005-03-03

Process for production of isotopes