ClassID:

30626

B01D2259/4541 - CPC Classification

Classification description:

Type of treatment; Gas separation or purification devices adapted for specific applications for portable use, e.g. gas masks

Recent Application in this class:
#1
20260114513
2026-04-30

VAPING DEVICE WITH INTEGRATED SMOKE NEUTRALIZATION

#2
20260114512
2026-04-30

Vaping Device with Integrated Smoke Neutralization

#3
20260097351
2026-04-09

CARTRIDGE FOR CAPTURING CO2

#4
20260068023
2026-03-05

PLASMA GENERATION DEVICE

#5
20260042051
2026-02-12

HOUSEHOLD OXYGEN GENERATOR

#6
20260021442
2026-01-22

Oxygen Concentrator Sorbent Bed Equalization and Feed Manifolds and Method of Using the Same

#7
20260014398
2026-01-15

ELECTRO-IONIC MASK CONTROL DEVICES, SYSTEMS, AND METHODS FOR IMPROVED PROTECTION FROM AIRBORNE BIO-PATHOGENS

#8
20250387583
2025-12-25

GAS CONCENTRATOR WITH REMOVABLE CARTRIDGE ADSORBENT BEDS

#9
20250339637
2025-11-06

ULTRA RAPID CYCLE PORTABLE OXYGEN CONCENTRATOR

#10
20250303343
2025-10-02

Detachable Adsorption Tower for Portable Oxygen Generators

#11
20250207705
2025-06-26

COMPACT PORTABLE OXYGEN CONCENTRATOR

#12
20250161878
2025-05-22

PORTABLE AIR PURIFIER FOR PROVIDING STERILIZING AND DEODORIZING FUNCTIONS

#13
20250161622
2025-05-22

SYSTEMS AND METHODS FOR MITIGATING NOISE AND VIBRATION IN A PORTABLE OXYGEN CONCENTRATOR

#14
20250153091
2025-05-15

PORTABLE MODULAR ROTARY TRUE MOVING BED FOR GAS SEPARATION AND METHOD THEREOF

#15
20250121324
2025-04-17

AIR PURIFIER USING WATERING

#16
20250083091
2025-03-13

System and Method for Concentrating Gas

#17
20250073630
2025-03-06

SYSTEM AND METHOD FOR CONCENTRATING GAS

#18
20250043549
2025-02-06

TRANSPORTABLE MODULAR WATER VAPOR CONDENSATION APPARATUS

#19
20240399284
2024-12-05

PORTABLE DEVICE FOR REMOVING GASEOUS POLLUTANTS FROM THE SURROUNDING AIR

#20
20240326018
2024-10-03

SORBENT BED FOR AN AIR FILTER

#21
20240316306
2024-09-26

PORTABLE OXYGEN CONCENTRATOR WITH UPSTREAM FILTER UNIT

#22
20240278167
2024-08-22

PORTABLE PRESSURE SWING ADSORPTION METHOD AND SYSTEM FOR LOW FLOW RATE GAS PROCESSING

#23
20240216636
2024-07-04

OXYGEN GAS CONCENTRATOR WITH OUTLET ACCUMULATOR

#24
20240157289
2024-05-16

System and Method for Concentrating Gas

#25
20240123392
2024-04-18

METHOD AND SYSTEM FOR REDUCTION OF UNWANTED GASES IN INDOOR AIR

#26
20230399825
2023-12-14

Transportable modular water vapor condensation apparatus

#27
20230372658
2023-11-23

ULTRA RAPID CYCLE PORTABLE OXYGEN CONCENTRATOR

#28
20230346013
2023-11-02

Eco-Friendly Personal Exhalant Filter

#29
20230346012
2023-11-02

MINITOX 2 MOUTHPIECE WITH VENTILATED AIRFLOW FOR A SMOKING ARTICLE

#30
20230293043
2023-09-21

HANDHELD EXHALED GAS COLLECTION DEVICE

#31
20230249122
2023-08-10

PORTABLE PRESSURE SWING ADSORPTION SYSTEM AND METHOD FOR FUEL GAS CONDITIONING

#32
20230248876
2023-08-10

SELF-DISINFECTING ANTIVIRAL FILTER MATERIAL, MANUFACTURING AND USE THEREOF, AND AIR FILTER DEVICE WITH THE FILTER MATERIAL

#33
20230234032
2023-07-27

FILTER MEDIUM FOR AIR AND WATER PURIFICATION AND DISINFECTION

#34
20230219026
2023-07-13

FILTER UNIT WITH A FILTER BLOCK, A DAMPING LAYER AND A HOUSING, AND PROCESS OF MANUFACTURING SUCH A FILTER UNIT

#35
20230202736
2023-06-29

FOOD CONTAINER FOR PRESERVING FRESHNESS OF FOOD ITEMS

#36
20230201512
2023-06-29

METHODS AND APPARATUS FOR CONTROLLING OPERATIONS IN AN OXYGEN CONCENTRATOR

#37
20230173440
2023-06-08

MIXING NOZZLE AND CONTAMINATED GAS PURIFICATION DEVICE USING MIXING NOZZLE

#38
20230173214
2023-06-08

PORTABLE VENTILATOR

#39
20230166135
2023-06-01

RESPIRATOR MASK WITH A FILTER

#40
20230160513
2023-05-25

Compact portable oxygen concentrator

#41
20230132087
2023-04-27

OXYGEN CONCENTRATOR WITH MOISTURE MANAGEMENT

#42
20230120744
2023-04-20

Gas concentrator with removable cartridge adsorbent beds

#43
20230120614
2023-04-20

Portable oxygen concentrator

#44
20230116353
2023-04-13

Filter, Composition and Process for Cleaning Feed and Exhaust Fluids and Method for Eliminating PFAS and other Noxious Impurities in Fluids

#45
20230101201
2023-03-30

Portable pressure swing adsorption method and system for fuel gas conditioning

#46
20230082278
2023-03-16

Portable pressure swing adsorption method and system for fuel gas conditioning

#47
20230080628
2023-03-16

Transportable modular water vapor condensation apparatus

#48
20230045644
2023-02-09

SIEVE BED ASSEMBLY WITH AN IDENTIFICATION DEVICE

#49
20220387923
2022-12-08

SEPARATION OF GASES FROM AIR

#50
20220313938
2022-10-06

Systems and methods for mitigating noise and vibration in a portable oxygen concentrator

#51
20220310242
2022-09-29

SYSTEM AND METHOD FOR FLEET MANAGEMENT OF PORTABLE OXYGEN CONCENTRATORS

#52
20220305428
2022-09-29

System and method for concentrating gas

#53
20220273906
2022-09-01

Regenerable Carbon Dioxide Scrubber

#54
20220266189
2022-08-25

Continuously regenerable scrubber

#55
20220241540
2022-08-04

SYSTEMS AND METHODS FOR PROVIDING CONCENTRATED OXYGEN TO A USER

#56
20220186955
2022-06-16

Oxygen enhancement of a room and HVAC system for same

#57
20220184433
2022-06-16

AIR TREATMENT SYSTEM

#58
20220016571
2022-01-20

System and method for concentrating gas

#59
20220016563
2022-01-20

System and method for concentrating gas

#60
20210370105
2021-12-02

AIR INHALATION AND EXHALATION FILTERING MASK

#61
20210346832
2021-11-11

AIR FILTERS COMPRISING METAL-CONTAINING POLYMERIC SORBENTS

#62
20210346828
2021-11-11

Tubular filter and system for filtration of polluted ambient air

#63
20210291114
2021-09-23

Manual water pump with power multiplier system

#64
20210283545
2021-09-16

Method and system for reduction of unwanted gases in indoor air

#65
20210252450
2021-08-19

Air filtration device

#66
20210245087
2021-08-12

Miniature gas detection and purification device

#67
20210244908
2021-08-12

Gas concentrator with removable cartridge adsorbent beds

#68
20210236981
2021-08-05

LOW EMISSIONS ELECTRONIC SMOKING DEVICE AND EMISSIONS FILTERING DEVICE

#69
20210187222
2021-06-24

Methods and apparatus for treating a respiratory disorder

#70
20210154427
2021-05-27

OXYGEN CONCENTRATOR WITH IMPROVED SIEVE BED CONSTRUCTION

#71
20210129087
2021-05-06

Anti-haze anti-harmful gas air filter membrane as well as preparation method and application thereof

#72
20210121816
2021-04-29

Air cleaner with user interface

#73
20210121813
2021-04-29

Portable air cleaner for kitchen

#74
20210121811
2021-04-29

Air cleaner for oil and other contaminants

#75
20210121810
2021-04-29

Air cleaner with cutter

#76
20210121808
2021-04-29

Air cleaner with rollable filter

#77
20210093824
2021-04-01

METHODS AND APPARATUS FOR TREATING A RESPIRATORY DISORDER

#78
20210077766
2021-03-18

Gas concentrator with removable cartridge adsorbent beds

#79
20210023503
2021-01-28

PORTABLE CARBON DIOXIDE ABSORPTION SYSTEM

#80
20210016044
2021-01-21

Oxygen gas concentrator with outlet accumulator

#81
20200406183
2020-12-31

SYSTEMS, APPARATUS AND METHODS FOR SEPARATING OXYGEN FROM AIR

#82
20200384406
2020-12-10

Product manifolds for use with portable oxygen concentrators and portable oxygen concentrators including such product manifolds

#83
20200381757
2020-12-03

Hydrated magnesium hydride energy system

#84
20200376426
2020-12-03

Adsorbent material module, adsorbent material structure and gas filtration mask

#85
20200330918
2020-10-22

Compositions comprising metal organic frameworks for the uptake of compounds and related methods

#86
20200324070
2020-10-15

Gas concentrator with removable cartridge adsorbent beds

#87
20200309303
2020-10-01

Compact portable oxygen concentrator

#88
20200309115
2020-10-01

Compact portable oxygen concentrator

#89
20200306485
2020-10-01

Compact portable oxygen concentrator

#90
20200277761
2020-09-03

Transportable modular water vapor condensation apparatus

#91
20200214339
2020-07-09

Low emissions electronic smoking device and emissions filtering device

#92
20200139069
2020-05-07

Ultra rapid cycle portable oxygen concentrator

#93
20200069903
2020-03-05

Ultra rapid cycle portable oxygen concentrator

#94
20190329076
2019-10-31

Oxygen concentrating self-rescuer device

#95
20190308135
2019-10-10

Portable carbon dioxide absorption system

#96
20190275454
2019-09-12

Air filters comprising metal-containing polymeric sorbents

#97
20190246762
2019-08-15

System for and method of containing unpleasant odors during travel

#98
20190232217
2019-08-01

Personal oxygen enhanced breathing system

#99
20190184128
2019-06-20

Portable oxygen concentrator for recreation and high altitude sports

#100
20190161412
2019-05-30

Graphene based tobacco smoke filter and a method for synthesizing graphene composition

#101
20190150516
2019-05-23

Low emissions electronic smoking device and emissions filtering device

#102
20190134340
2019-05-09

Method and systems for the delivery of oxygen enriched gas

#103
20190118161
2019-04-25

PROCESS FOR PRODUCING ADSORBENT INCLUDING ACTIVATED CARBON

#104
20190105458
2019-04-11

Personalized air purification device

#105
20190060865
2019-02-28

Carbide derived carbon for use in chemical scrubbers

#106
20190060682
2019-02-28

Air-filtering protection device

#107
20190015767
2019-01-17

Continuously regenerable media purifier

#108
20190000136
2019-01-03

SMOKE GAS FILTER DEVICE AND TOBACCO PRODUCT

#109
20180369750
2018-12-27

Portable carbon dioxide absorption system

#110
20180369531
2018-12-27

Gas concentrator with removable cartridge absorbent beds

#111
20180339261
2018-11-29

Method and system for reduction of unwanted gases in indoor air

#112
20180292336
2018-10-11

TEMPERATURE DIFFERENTIAL FLUID SENSOR

#113
20180221692
2018-08-09

Filter media for respiratory protection

#114
20180185602
2018-07-05

Wearable oxygen generator and docking station enabling higher oxygen flow capacity

#115
20180117563
2018-05-03

Carbide-derived carbons having incorporated metal chloride or metallic nanoparticles

#116
20180110954
2018-04-26

VENTILATOR APPARAUS AND SYSTEMS

#117
20180104517
2018-04-19

Air purifier apparatus with flexible filter modules

#118
20180050299
2018-02-22

Humidity absorber

#119
20180050167
2018-02-22

Ultra rapid cycle portable oxygen concentrator

#120
20180043331
2018-02-15

Material such as film, fiber, woven and nonwoven fabric with adsorbancy

#121
20180001049
2018-01-04

Air purifier apparatus

#122
20180001048
2018-01-04

Oxygen gas concentrator with outlet accumulator

#123
20170361052
2017-12-21

Gas concentrator with removable cartridge adsorbent beds

#124
20170348501
2017-12-07

Gas concentrator with removable cartridge adsorbent beds

#125
20170341010
2017-11-30

Compositions comprising metal organic frameworks for the uptake of compounds and related methods

#126
20170281897
2017-10-05

DEVICE FOR PROVIDING SUPPLEMENTAL OXYGEN TO A SUBJECT

#127
20170274351
2017-09-28

Process for producing adsorbent including activated carbon

#128
20170209663
2017-07-27

Nitric oxide reactor and distributor apparatus and method

#129
20170136270
2017-05-18

Respirator without breathing resistance

#130
20170128761
2017-05-11

Metal organic frameworks for the catalytic detoxification of chemical warfare nerve agents

#131
20170120085
2017-05-04

Oxygen concentrating self-rescuer device

#132
20170106218
2017-04-20

Portable electronic device with a smart air purifier

#133
20170087326
2017-03-30

Oxygen concentrator systems and methods

#134
20170050058
2017-02-23

Mouthheld filter apparatus

#135
20170032711
2017-02-02

Label, wristband clip, paper material and ink ribbon containing carbon dioxide absorbent liposome

#136
20170021302
2017-01-26

Portable oxygen enrichment device and method of use

#137
20160114120
2016-04-28

Dual oxygen concentrator systems and methods

#138
20160038924
2016-02-11

Activated carbon with a special finishing, production and use thereof

#139
20160030877
2016-02-04

End of service life indicating systems for layered filter cartridges

#140
20160023156
2016-01-28

COadsorption recycler

#141
20160022951
2016-01-28

Ultra rapid cycle portable oxygen concentrator

#142
20150375162
2015-12-31

Oxygen concentrator system and method

#143
20150367275
2015-12-24

Oxygen separation system and method of generating a flow of oxygen enriched gas

#144
20150343371
2015-12-03

Drying apparatus

#145
20150335849
2015-11-26

Oxygen concentrator systems and methods

#146
20150306536
2015-10-29

Layered or mixed sorbent bed protective filtration device

#147
20150298043
2015-10-22

Method and system for reduction of unwanted gases in indoor air

#148
20150283493
2015-10-08

Layered or mixed sorbent bed protective filtration device

#149
20150266003
2015-09-24

Method for filling a conformal shaped carbon filter

#150
20150250910
2015-09-10

Filtration medium with electrospun metal oxide nanofiber layer

#151
20150246197
2015-09-03

Face mask arrangement, system containing it and use thereof for administration

#152
20150238784
2015-08-27

Zeolite coated nasal mask and disposable particulate respirator filtration media

#153
20150196727
2015-07-16

Oxygen concentrator for high pressure oxygen delivery with oxygen circulation loop and improved portability

#154
20150182720
2015-07-02

Gas concentrator with removable cartridge adsorbent beds

#155
20150128800
2015-05-14

Oxygen separator and method of generating oxygen

#156
20150104524
2015-04-16

Portable oxygen enrichment device and method of use

#157
20150101603
2015-04-16

Ultra rapid cycle portable oxygen concentrator

#158
20150053080
2015-02-26

Adsorptive filter medium

#159
20150040920
2015-02-12

Non-woven body for binding mercury

#160
20140366883
2014-12-18

Filter box assembly and filter unit

#161
20140334998
2014-11-13

Material such as film, fiber, woven and nonwoven fabric with adsorbancy

#162
20140242708
2014-08-28

Device and method for determining processing capacity

#163
20140224246
2014-08-14

Proportional oxygen conserving device with flow sensing

#164
20140224126
2014-08-14

Portable oxygen concentrator with integrated manifold

#165
20140216452
2014-08-07

Nitric oxide reactor and distributor apparatus and method

#166
20140166003
2014-06-19

Method of separating and distributing oxygen

#167
20140144110
2014-05-29

Filter cartridge apparatus

#168
20140116444
2014-05-01

Devices for removal of dimethyl sulfoxide (DMSO) or related compounds or associated odors and methods of using same

#169
20140060400
2014-03-06

Device for eliminating harmful substance

#170
20130327335
2013-12-12

Air cleaning apparatus and method for predicting breakthrough time for the same

#171
20130298774
2013-11-14

Conformal split planar flow air purifying filter

#172
20130292001
2013-11-07

Method for radial fluid flow particle filling of respirator canisters

#173
20130287986
2013-10-31

Label, printing paper top layer formation material, information-bearing medium, wristband clip, and carbon dioxide reduction method using same

#174
20130263640
2013-10-10

Method for correlating a monitoring device to the end of service life of a filter cartridge

#175
20130239813
2013-09-19

Portable monitor for end of service life indication

#176
20130233169
2013-09-12

System and method for concentrating gas

#177
20130216627
2013-08-22

Portable oxygen enrichment device and method of use

#178
20130052112
2013-02-28

Systems for removing dimethyl sulfoxide (DMSO) or related compounds, or odors associated with same

#179
20130047982
2013-02-28

End of service life indicator for respirator

#180
20130036910
2013-02-14

Apparatus for separating oxygen from ambient air

#181
20130014752
2013-01-17

Air filtration device

#182
20130008438
2013-01-10

OXYGEN CONCENTRATOR

#183
20120304867
2012-12-06

Oxygen concentrator

#184
20120266883
2012-10-25

Gas concentrator with removable cartridge adsorbent beds

#185
20120192864
2012-08-02

Ultra rapid cycle portable oxygen concentrator

#186
20120177546
2012-07-12

GAS CONCENTRATION ARRANGEMENT

#187
20120152248
2012-06-21

APPARATUS FOR COMPRESSING AND STORING OXYGEN ENRICHED GAS

#188
20120133939
2012-05-31

Carbon dioxide capture and storage using open frameworks

#189
20120111335
2012-05-10

Zinc oxide containing filter media and methods of forming the same

#190
20120055480
2012-03-08

VENTILATOR SYSTEMS AND METHODS

#191
20120055478
2012-03-08

POSITIVE PRESSURE THERAPY SYSTEMS AND METHODS

#192
20120055477
2012-03-08

OXYGEN CONCENTRATOR APPARATUS CONFIGURED FOR HIGH ALTITUDE USE

#193
20120055475
2012-03-08

OXYGEN CONCENTRATOR SYSTEM AND METHODS FOR ORAL DELIVERY OF OXYGEN ENRICHED GAS

#194
20120055474
2012-03-08

METHODS AND SYSTEMS FOR PROVIDING OXYGEN ENRICHED GAS

#195
20120055340
2012-03-08

Power management systems and methods for use in an oxygen concentrator

#196
20120027827
2012-02-02

Method and Composition for Reducing Exhaled Carbon Dioxide Emissions

#197
20120006199
2012-01-12

Sieve bed

#198
20120000462
2012-01-05

Portable Oxygen Delivery Device

#199
20110277767
2011-11-17

METAL ORGANIC FRAMEWORKS (MOFS) FOR AIR PURIFICATION

#200
20110247622
2011-10-13

Portable oxygen delivery device

#201
20110247621
2011-10-13

Portable oxygen delivery device

#202
20110247620
2011-10-13

Portable oxygen delivery device

#203
20110232483
2011-09-29

Portable and stationary oxygen concentrator system

#204
20110226126
2011-09-22

Generating oxygen in hospitals

#205
20110203584
2011-08-25

Systems for removing dimethyl sulfoxide (DMSO) or related compounds, or odors associated with same

#206
20110203583
2011-08-25

Methods for facilitating use of dimethyl sulfoxide (DMSO) by removal of same, related compounds, or associated odors

#207
20110189065
2011-08-04

Inorganic dry compositions for absorption of mercury vapor

#208
20110126828
2011-06-02

Personal air purifier

#209
20110086118
2011-04-14

Composition for prevention of influenza viral infection comprising sumac extract, air filter comprising the same and air cleaning device comprising the filter

#210
20110067566
2011-03-24

Adsorbent bed pressure balancing for a gas concentrator

#211
20110056220
2011-03-10

PH2OCP—portable water and climatic production system

#212
20110048976
2011-03-03

DESICCANT CONTAINER AND BLANK FOR FORMING A SLEEVE OF A DESICCANT CONTAINER

#213
20110036552
2011-02-17

HEATSINK HAVING ONE OR MORE OZONE CATALYZING FINS

#214
20110030556
2011-02-10

METHOD AND SYSTEM FOR GENERATING OXYGEN-ENRICHED GAS

#215
20110023431
2011-02-03

ANTIMICROBIAL FILTRATION ARTICLE

#216
20110017216
2011-01-27

Method of separating and distributing oxygen

#217
20110017063
2011-01-27

Apparatus for separating oxygen from ambient air

#218
20100326847
2010-12-30

Monolithic Polymer Materials for Gas Storage

#219
20100313869
2010-12-16

Catalytic reactor hetero-structure and applications

#220
20100300435
2010-12-02

Oxygen helmet

#221
20100294133
2010-11-25

Pressure swing adsorption method and system with multiple-vessel beds

#222
20100282669
2010-11-11

Filter and air cleaner

#223
20100275922
2010-11-04

Sorption agent comprising an activated carbon impregnated with a zinc compound and a molybdenum compound and gas-filtering element containing the sorption agent

#224
20100203652
2010-08-12

Method and apparatus for selective capture of gas phase analytes using metal β-diketonate polymers

#225
20100192775
2010-08-05

Portable PSA oxygen generator

#226
20100153023
2010-06-17

Systems and methods for determining filter service lives

#227
20100116132
2010-05-13

Hybrid membrane—PSA system for separating oxygen from air

#228
20100078027
2010-04-01

Apparatus for recycling moisture exhaled from worker within dry room to the worker

#229
20100071698
2010-03-25

Oxygen concentrator

#230
20100051030
2010-03-04

System and method for controlling bolus pulse duration based on inspiratory time in an oxygen concentation system

#231
20100050583
2010-03-04

Ammonia-free gaseous air filter

#232
20100018399
2010-01-28

Rotary valve element for twin bed alternative treatment systems

#233
20090314696
2009-12-24

Adaptive membrane structure

#234
20090301493
2009-12-10

Adsorbents and inhalation devices

#235
20090293879
2009-12-03

Device and Method for Producing Oxygen

#236
20090232962
2009-09-17

Antimicrobial filtration article

#237
20090211453
2009-08-27

Filtration Media for the Removal of Basic Molecular Contaminants for Use in a Clean Environment

#238
20090211438
2009-08-27

Method of determining the purity of oxygen present in an oxygen-enriched gas produced from an oxygen delivery system

#239
20090205494
2009-08-20

Single manifold assembly for oxygen-generating systems

#240
20090167698
2009-07-02

User interface for a portable oxygen concentrator

#241
20090148378
2009-06-11

Apparatus and Delivery of Oxygen

#242
20090145428
2009-06-11

System and Method for Controlling Supply of Oxygen Based on Breathing Rate

#243
20090118528
2009-05-07

Natural gas desulfurization

#244
20090107500
2009-04-30

Portable Oxygen Concentrator System and Method Including Concentrated Oxygen Flow Delivery

#245
20090088319
2009-04-02

Synthesis of Gold Metal Oxide Catalysts for Catalytic Oxidation of Carbon Monoxide by Vapor Deposition of Ammonia

#246
20090071330
2009-03-19

Method and system of operating a trans-fill device

#247
20080302596
2008-12-11

Diaphragm Muffler and Method of Use

#248
20080251081
2008-10-16

Systems for removing dimethyl sulfoxide (DMSO) or related compounds or odors associated with same

#249
20080238700
2008-10-02

Method and apparatus for detecting constituent changes in an environment

#250
20080229929
2008-09-25

Antimicrobial filtration article

#251
20080217176
2008-09-11

Portable oxygen maintenance and regulation concentrator apparatus

#252
20080202508
2008-08-28

Oxygen concentrator system

#253
20080196580
2008-08-21

Portable oxygen concentrator

#254
20080173177
2008-07-24

METHOD FOR REMOVING HARMFUL SUBSTANCES AND FILTER FOR REMOVING HARMFUL SUBSTANCES

#255
20080156194
2008-07-03

Air filtration media comprising metal-doped silicon-based gel and/or zeolite materials treated with nitric acid and/or potassium persulfate

#256
20080156193
2008-07-03

PORTABLE PSA OXYGEN GENERATOR

#257
20080148941
2008-06-26

Iodinated anion exchange resin and process for preparing same

#258
20080118373
2008-05-22

Apparatus for compressing and storing oxygen enriched gas

#259
20080110338
2008-05-15

Adsorbent bed pressure balancing for a gas concentrator

#260
20080105258
2008-05-08

Portable gas fractionalization system

#261
20080092744
2008-04-24

APPARATUS FOR PREVENTING OR REDUCING THE OXIDATION OF FOOD

#262
20080087170
2008-04-17

PORTABLE GAS FRACTIONALIZATION SYSTEM

#263
20080026041
2008-01-31

NON-WOVEN MEDIA INCORPORATING ULTRAFINE OR NANOSIZE POWDERS

#264
20080022851
2008-01-31

Pressure swing adsorption method and system with multiple-vessel beds

#265
20070289446
2007-12-20

Weight-optimized portable oxygen concentrator

#266
20070266585
2007-11-22

Portable Disposable Air/Gas Dryer

#267
20070227360
2007-10-04

Portable oxygen concentrator

#268
20070214960
2007-09-20

Method and system of operating a trans-fill device

#269
20070214955
2007-09-20

Method and system of coordinating an intensifier and sieve beds

#270
20070202259
2007-08-30

Process for making treated activated carbon

#271
20070199446
2007-08-30

Production of carbon monoxide-free hydrogen and helium from a high-purity source

#272
20070137487
2007-06-21

Portable medical oxygen concentrator

#273
20070119457
2007-05-31

Breath purifying device

#274
20070101688
2007-05-10

NBC filtration unit providing unfiltered and filtered air paths

#275
20070084342
2007-04-19

Cylinder filling oxygen concentrator

#276
20070028769
2007-02-08

Method and apparatus for producing potable water from air including severely arid and hot climates

#277
20060230939
2006-10-19

Portable oxygen concentrator

#278
20060230929
2006-10-19

Portable oxygen concentrator

#279
20060230629
2006-10-19

Wearable disposable dryer with carrying strap and stowage accessory

#280
20060182680
2006-08-17

Systems and processes for providing hydrogen to fuel cells

#281
20060174880
2006-08-10

Ambulatory oxygen concentrator containing a three phase vacuum separation system

#282
20060174878
2006-08-10

Low power ambulatory oxygen concentrator

#283
20060174872
2006-08-10

Method and apparatus for controlling the purity of oxygen produced by an oxygen concentrator

#284
20060156926
2006-07-20

Method and apparatus for odor control using panels of activated carbon cloth

#285
20060122057
2006-06-08

Preparation of nanometered gold catalyzer

#286
20060117957
2006-06-08

Mini-portable oxygen concentrator

#287
20060081483
2006-04-20

Hydrogen storage container and mixture therein

#288
20060032372
2006-02-16

Grooved active and passive adsorbent filters

#289
20060000474
2006-01-05

Apparatus for compressing and storing oxygen enriched gas

#290
20050268785
2005-12-08

Disposable cartridge air/gas dryer

#291
20050266750
2005-12-01

Treated activated carbon and process for making same

#292
20050265903
2005-12-01

Apparatus and delivery of medically pure oxygen

#293
20050257686
2005-11-24

Weight-optimized portable oxygen concentrator

#294
20050252839
2005-11-17

Method of making a filtering face mask that has an exhalation valve attached thereto

#295
20050247201
2005-11-10

Disposable cartridge for air/gas dryer

#296
20050223902
2005-10-13

Self-powered, wearable personal air purifier

#297
20050161043
2005-07-28

Simplified dual mode medical oxygen concentrator

#298
20050160913
2005-07-28

Method of manufacturing and using enhanced carbon dioxide adsorbent

#299
20050160912
2005-07-28

Enhanced carbon dioxide adsorbent

#300
20050160905
2005-07-28

Dual mode medical oxygen concentrator