ClassID:

84651

C01B21/0438 - CPC Classification

Classification description:

Nitrogen; Compounds thereof; Purification or separation of nitrogen; Purification or separation processes; Physical processing only by making use of membranes

Sub-classes:
Recent Application in this class:
#1
20250197218
2025-06-19

Apparatus and Method for Nitrogen Generation for Methanol Powered Maritime Vehicle

#2
20230340344
2023-10-26

Rotary Kiln Catalytically Enhanced Oxy-Fuel Gasification and Oxy-fuel Combustion (RK-GEN) System, Method, or Apparatus

#3
20210379527
2021-12-09

Vacuum assisted air separation module operation

#4
20210178320
2021-06-17

Air separation modules and methods of removing condensate from air separation modules

#5
20200189900
2020-06-18

Nitrogen generator and uses thereof

#6
20190335651
2019-11-07

Robotic litter processing system

#7
20190282951
2019-09-19

Vacuum assisted air separation module operation

#8
20190030491
2019-01-31

METHODS FOR PREPARING CARBON MOLECULAR SIEVE HOLLOW FIBER MEMBRANES FOR GAS SEPARATION

#9
20180361311
2018-12-20

MEMBRANE-BASED SYSTEM FOR GENERATING HIGH-PURITY NITROGEN

#10
20180282144
2018-10-04

Nitrogen generator and uses thereof

#11
20170296964
2017-10-19

Fluid separation module

#12
20150336054
2015-11-26

PROCESS AND APPARATUS FOR PRODUCING OXYGEN AND NITROGEN USING ION TRANSPORT MEMBRANES

#13
20150047502
2015-02-19

Device and method for separating gases

#14
20140290260
2014-10-02

System and method for generating nitrogen from a gas turbine

#15
20130042755
2013-02-21

Combination membrane system for producing nitrogen enriched air

#16
20110182797
2011-07-28

Nitrogen-permeable membranes and uses thereof

#17
20110107792
2011-05-12

Shipboard hybrid system for making dry, oil-free, utility air and inert gas

#18
20110059376
2011-03-10

Method for generating a gas which may be used for startup and shutdown of a fuel cell

#19
20100248044
2010-09-30

ON BOARD GENERATION OF N2 FOR FUEL CELLS USING A MEMBRANE

#20
20080271598
2008-11-06

Non-cryogenic nitrogen generators and methods of use

#21
20070157803
2007-07-12

Nitrogen inerting system

#22
20070125232
2007-06-07

Mobile nitrogen generation system

#23
20060000357
2006-01-05

Method and system for producing inert gas from combustion by-products