ClassID:

160450

F25J2230/42 - CPC Classification

Classification description:

Processes or apparatus involving steps for increasing the pressure of gaseous process streams the fluid being nitrogen

Recent Application in this class:
#1
20250060158
2025-02-20

NITROGEN GENERATING DEVICE AND NITROGEN GENERATING METHOD

#2
20250060154
2025-02-20

System and Method for Turndown of a Hydrogen Precooling and/or Hydrogen Liquefaction System

#3
20250003679
2025-01-02

AIR SEPARATION SYSTEM AND AIR SEPARATION METHOD

#4
20240418437
2024-12-19

Method of Hydrogen Liquefaction Using Optimized Claude Refrigeration Cycles

#5
20240401877
2024-12-05

Nitrogen Rejection Unit System and Method for Low Nitrogen Concentration Feeds

#6
20240295359
2024-09-05

Device and Method for Recovering Gas with Variable Low-Temperature

#7
20240288218
2024-08-29

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

#8
20240288217
2024-08-29

SYSTEM AND METHOD FOR RELIQUEFYING BOIL-OFF GAS OF VESSEL

#9
20240230221
2024-07-11

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

#10
20240151464
2024-05-09

DEVICE AND METHOD FOR LIQUEFYING A FLUID SUCH AS HYDROGEN AND/OR HELIUM

#11
20240142170
2024-05-02

DEVICE AND METHOD FOR LIQUEFYING A FLUID SUCH AS HYDROGEN AND/OR HELIUM

#12
20240125547
2024-04-18

DEVICE AND METHOD FOR LIQUEFYING A FLUID SUCH AS HYDROGEN AND/OR HELIUM

#13
20240053097
2024-02-15

AIR SEPARATION UNIT AND AIR SEPARATION METHOD

#14
20240019206
2024-01-18

CRYOGENIC PROCESS FOR RECOVERING VALUABLE COMPONENTS FROM A HYDROGEN-RICH FEED GAS

#15
20230168029
2023-06-01

REFRIGERANT AND NITROGEN RECOVERY

#16
20230114229
2023-04-13

SYSTEM AND METHOD TO PRODUCE LIQUEFIED NATURAL GAS

#17
20220113085
2022-04-14

APPARATUS TO CONVERT EXCESS LIQUID OXYGEN INTO LIQUID NITROGEN

#18
20220112083
2022-04-14

Method to convert excess liquid oxygen into liquid nitrogen

#19
20210364229
2021-11-25

Systems and Methods of Removing Contaminants in a Liquid Nitrogen Stream Used to Liquefy Natural Gas

#20
20210348840
2021-11-11

METHOD FOR OPERATING A RELIQUEFACTION SYSTEM

#21
20210348838
2021-11-11

SYSTEM AND METHOD FOR NATURAL GAS AND NITROGEN LIQUEFACTION WITH DIRECT DRIVE MACHINES FOR TURBINES AND BOOSTERS

#22
20210285721
2021-09-16

LNG production with nitrogen removal

#23
20210222948
2021-07-22

Liquefaction apparatus

#24
20200370823
2020-11-26

System and method for small scale LNG production

#25
20190308877
2019-10-10

Method and plant for generation of synthesis gas

#26
20190242646
2019-08-08

Method and apparatus for obtaining pressurized nitrogen by cryogenic separation of air

#27
20190056175
2019-02-21

REFRIGERANT AND NITROGEN RECOVERY

#28
20180313603
2018-11-01

APPARATUS AND METHOD FOR PRODUCING LIQUEFIED GAS

#29
20180038644
2018-02-08

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

#30
20180038642
2018-02-08

PROCESS INTEGRATION OF A GAS PROCESSING UNIT WITH LIQUEFACTION UNIT

#31
20180038641
2018-02-08

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

#32
20180038638
2018-02-08

Integration of industrial gas site with liquid hydrogen production

#33
20170038137
2017-02-09

METHOD FOR THE PRODUCTION OF LIQUEFIED NATURAL GAS AND NITROGEN

#34
20170038132
2017-02-09

Methods and systems for integration of industrial site efficiency losses to produce LNG and/or LIN

#35
20170016668
2017-01-19

Increasing efficiency in an LNG production system by pre-cooling a natural gas feed stream

#36
20170016667
2017-01-19

Liquefied natural gas production system and method with greenhouse gas removal

#37
20170010041
2017-01-12

Systems and methods for the production of liquefied nitrogen using liquefied natural gas

#38
20160123662
2016-05-05

Method and device for oxygen production by low-temperature separation of air at variable energy consumption

#39
20140026611
2014-01-30

Method and apparatus for liquefying a gas or cooling a feed gas at supercritical pressure

#40
20120285197
2012-11-15

PROCESS AND UNIT FOR THE SEPARATION OF AIR BY CRYOGENIC DISTILLATION

#41
20120036890
2012-02-16

NITROGEN REJECTION METHODS AND SYSTEMS

#42
20120017640
2012-01-26

PROCESS FOR SEPARATING OFF NITROGEN

#43
20110308276
2011-12-22

METHOD AND SYSTEM FOR PERIODIC COOLING, STORING, AND HEATING WITH MULTIPLE REGENERATORS

#44
20110138856
2011-06-16

SEPARATION METHOD AND APPARATUS

#45
20100275646
2010-11-04

Method of Separating Off Nitrogen from Liquefied Natural Gas

#46
20100251763
2010-10-07

Apparatus and Methods for Natural Gas Transportation and Processing

#47
20090013868
2009-01-15

PROCESS AND APPARATUS FOR THE SEPARATION OF A GASEOUS MIXTURE

#48
20090013717
2009-01-15

Process and apparatus for the separation of a gaseous mixture

#49
20080216512
2008-09-11

Air separation process utilizing refrigeration extracted from LNG for production of liquid oxygen

#50
20080010995
2008-01-17

METHOD AND INSTALLATION FOR ENERGY PRODUCTION BY MEANS OF A GAS TURBINE ASSOCIATED WITH AN AIR SEPARATION UNIT

#51
20080000266
2008-01-03

System to increase capacity of LNG-based liquefier in air separation process

#52
20070186582
2007-08-16

Air-seperation apparatus, integrated air-separation and metal-production apparatus, and method of starting one such air-separation apparatus