ClassID:

86172

C02F1/002 - CPC Classification

Classification description:

Treatment of water, waste water, or sewage; Processes for the treatment of water whereby the filtration technique is of importance using small portable filters for producing potable water, e.g. personal travel or emergency equipment, survival kits, combat gear

Recent Application in this class:
#1
20260144413
2026-05-28

WATER-RECYCLING PERSONAL CARE DEVICE AND SYSTEM

#2
20260138888
2026-05-21

FILTERED BEVERAGE CONTAINER

#3
20260131263
2026-05-14

FILTRATION SYSTEM

#4
20260116802
2026-04-30

DISASTER RELIEF DEVICE

#5
20260097982
2026-04-09

MOBILE WATER FILTERING SYSTEM

#6
20260042687
2026-02-12

ELECTROLYSIS WATER FILTER SYSTEM

#7
20260028262
2026-01-29

Wearable device for purifying impure water and method thereof

#8
20250375720
2025-12-11

FILTRATION SYSTEM

#9
20250346500
2025-11-13

FILTER SYSTEM FOR HANDHELD CONTAINERS OF CONSUMABLE LIQUIDS

#10
20250250441
2025-08-07

ECOFRIENDLY NANOCOMPOSITES FOR PORTABLE WATER PURIFICATION

#11
20250187945
2025-06-12

Filter System

#12
20250153077
2025-05-15

FILTRATION CONTAINER ASSEMBLIES AND METHODS

#13
20250136474
2025-05-01

A COMPREHENSIVE LIQUID FILTRATION DEVICE, FILTRATION SYSTEM, AND METHOD THEREOF

#14
20250128963
2025-04-24

Portable Water Filtration Apparatus and Method

#15
20250113913
2025-04-10

LIQUID STORAGE DEVICE AND METHOD OF MANUFACTURING THEREOF

#16
20250074665
2025-03-06

PORTABLE WATER BOTTLE CAP WITH BUILT-IN FILTER

#17
20250018320
2025-01-16

PORTABLE FLUID FILTERING APPARATUS

#18
20240416285
2024-12-19

COMPACT WATER FILTERING DEVICE

#19
20240416264
2024-12-19

GERMICIDAL DEVICE FOR AIR AND FOR LIQUIDS

#20
20240294398
2024-09-05

AUTOMATIC WATER FILTERING PURIFYING BOTTLE

#21
20240217842
2024-07-04

PUSH-TYPE WATER PURIFICATION CUP

#22
20240182344
2024-06-06

CUSTOMIZABLE MULTISTAGE FILTER ASSEMBLY WITH REUSABLE SELF-CONTAINED FILTER HOUSING ENABLED WITH DATA REPORTING

#23
20240139657
2024-05-02

Filtration container assemblies and methods

#24
20240116775
2024-04-11

WASTE FLUID WATER RECOVERY SYSTEMS

#25
20240091682
2024-03-21

Filtration container assemblies and methods

#26
20240051851
2024-02-15

METHODS AND SYSTEMS FOR USING ULTRAVIOLET LIGHT-EMITTING DIODES FOR DISINFECTION OF STATIONARY FLUIDS

#27
20240010521
2024-01-11

PORTABLE WATER PURIFICATION SYSTEMS INCLUDING A MOUNTING ASSEMBLY

#28
20230416115
2023-12-28

Pressurization System for Portable Water Filters

#29
20230405498
2023-12-21

Filtration container assemblies and methods

#30
20230365431
2023-11-16

Apparatus and method for hydrate-based wastewater treatment and cold storage

#31
20230233964
2023-07-27

PRESSING SURFACE FOR FILTRATION CONTAINER ASSEMBLY

#32
20230133952
2023-05-04

Water purifying filter coupled to mouth of beverage container

#33
20230046090
2023-02-16

CLOSURE FOR A MULTI-USE DRINKS BOTTLE

#34
20230009253
2023-01-12

Bottle with Filtering Arrangement

#35
20220410044
2022-12-29

MULTI-FUNCTIONAL FILTRATION APPARATUS AND METHOD

#36
20220402775
2022-12-22

Water Clip

#37
20220396513
2022-12-15

WATER TREATMENT SYSTEM

#38
20220396499
2022-12-15

PERSONAL COLLAPSIBLE DEVICE FOR WATER PURIFICATION

#39
20220388873
2022-12-08

Bottlecap with UV LED and a removable filter cartridge for water purification

#40
20220388869
2022-12-08

PORTABLE POTABLE WATER FILTRATION

#41
20220388868
2022-12-08

Portable potable water filtration

#42
20220306487
2022-09-29

Fluid filtering system and associated methods

#43
20220289593
2022-09-15

Ruggedized portable water treatment system

#44
20220274858
2022-09-01

WATER TREATMENT APPARATUS, WATER TREATMENT SYSTEM, AND WATER TREATMENT METHOD

#45
20220234911
2022-07-28

FILTERING WATER BOTTLE

#46
20220169538
2022-06-02

Water generation system for a vehicle that implements sanitization by ultraviolet light

#47
20220168705
2022-06-02

FORMULATION AND METHOD FOR PREPARING FIBROUS MATERIAL COMPRISING NANOFIBERS, AND FILTER COMPRISING THE FIBROUS MATERIAL

#48
20220143532
2022-05-12

Filtration container assemblies and methods

#49
20220135432
2022-05-05

Self-cleaning water filter

#50
20220064026
2022-03-03

Modular Personal Water Purifier

#51
20220055917
2022-02-24

PORTABLE WATER BOTTLE WITH FILTER AND TEMPERATURE CONTROL MODULE

#52
20220041470
2022-02-10

SOLAR POWERED SANITIZING WATER BOTTLE

#53
20210346825
2021-11-11

Particle filter system

#54
20210340029
2021-11-04

Water purification device

#55
20210340028
2021-11-04

Filtration system

#56
20210292037
2021-09-23

Polygonic bottle and its uses

#57
20210189700
2021-06-24

System for accumulating rain water

#58
20210155502
2021-05-27

Portable water filtration apparatus

#59
20210147252
2021-05-20

WATER FILTRATION SYSTEM

#60
20210122646
2021-04-29

WATER PURIFIER HAVING LIGHT-EMITTING ASSEMBLY

#61
20210101803
2021-04-08

PORTABLE FLUID COLLECTION AND FILTRATION SYSTEM

#62
20210047206
2021-02-18

CONTAINER WITH HEATING/COOLING ASSEMBLY AND REMOVABLE POWER SOURCE MODULES

#63
20210024380
2021-01-28

Media purification devices having intergral flow controllers

#64
20210022529
2021-01-28

Drinking cup filter assembly

#65
20210009439
2021-01-14

A PORTABLE WATER FILTRATION DEVICE

#66
20200392016
2020-12-17

Water bottle with a filter structure and a method therefor

#67
20200369542
2020-11-26

WATER TREATMENT SYSTEM USING OZONE

#68
20200361790
2020-11-19

Portable water treatment system

#69
20200338480
2020-10-29

Filtration container assemblies and methods

#70
20200337486
2020-10-29

Portable filter

#71
20200317554
2020-10-08

Purification filter element and water purification cup

#72
20200255300
2020-08-13

Carrying Case for Portable Water Filtration System

#73
20200231464
2020-07-23

WATER FILTRATION SYSTEM AND METHOD OF USE

#74
20200229579
2020-07-23

Squeezable hybrid water bottle with integrated filter

#75
20200216342
2020-07-09

PORTABLE WATER TREATMENT SYSTEM USING OZONE

#76
20200189932
2020-06-18

Apparatus and method for filtering water

#77
20200188823
2020-06-18

WATER-PURIFYING LID HAVING SELF-POWERED UV LED AND FILTER COUPLED THERETO

#78
20200148564
2020-05-14

PORTABLE WATER PURIFIER

#79
20200109071
2020-04-09

DRINKABLE WATER PURIFICATION DEVICE

#80
20200087166
2020-03-19

Container for filter-as-you-pour system

#81
20200079662
2020-03-12

Potable water producing device

#82
20200079658
2020-03-12

Water treatment system

#83
20200071217
2020-03-05

APPARATUS FOR CONVERTING A SEPTIC TANK INTO AN AEROBIC TREATMENT SYSTEM AND A WASTEWATER TREATMENT SYSTEM EMPLOYING SUCH APPARATUS

#84
20200024174
2020-01-23

Filter system including an activated carbon block for removing particles, organic contaminants, and microorganisms from a fluid

#85
20190382282
2019-12-19

FILTERING WATER BOTTLE

#86
20190300413
2019-10-03

Drinking bottle

#87
20190269266
2019-09-05

Portable water purifier

#88
20190256370
2019-08-22

Portable self-contained water filter apparatus

#89
20190225504
2019-07-25

Drinking water filtration and/or purification apparatus

#90
20190217975
2019-07-18

HARVESTING AND PURIFICATION OF WATER FROM A VEHICLE

#91
20190194037
2019-06-27

Device for water disinfection by ultrafiltration

#92
20190191833
2019-06-27

Walking stick with integrated water filtration

#93
20190185347
2019-06-20

Portable Water Filtration Assembly

#94
20190144312
2019-05-16

Drinking water purification device

#95
20190144300
2019-05-16

Method and apparatus for reservoir free and ventless water filtering

#96
20190099692
2019-04-04

Portable indoor/outdoor atmospheric water generator

#97
20190092648
2019-03-28

Portable self-contained water filter apparatus

#98
20190084840
2019-03-21

METHOD AND APPARATUS FOR AUTOMATIC FLOW CONTROL FOR PRODUCING EFFECTIVELY TREATED WATER WITH A CHEMICAL TREATMENT SUCH AS OZONE

#99
20190062190
2019-02-28

Portable water purification systems and method of assembling same

#100
20190062179
2019-02-28

Apparatus, system, and methods for using human energy in collecting, transporting, and purifying water

#101
20190062177
2019-02-28

Portable water purification systems and method of assembling same

#102
20190060801
2019-02-28

Purification device

#103
20190054462
2019-02-21

Portable liquid measuring and filtering device

#104
20190047889
2019-02-14

Compact water purification unit

#105
20190001271
2019-01-03

Method of water purification using hydrophilic and compressible aerogel as draw agent in forward osmosis

#106
20180339248
2018-11-29

Water filter system

#107
20180297870
2018-10-18

PORTABLE WATER FILTER DEVICE

#108
20180265374
2018-09-20

Filter housing for filter as you pour filtration

#109
20180237315
2018-08-23

Portable water-purifying pouch

#110
20180222783
2018-08-09

Gravity-fed water filter and purifier

#111
20180215630
2018-08-02

Filter housing for filter as you pour filtration

#112
20180201523
2018-07-19

Apparatus for water purification

#113
20180200653
2018-07-19

Portable water purifier

#114
20180194646
2018-07-12

Media purification devices having integral flow controllers

#115
20180194645
2018-07-12

Purifying device

#116
20180186671
2018-07-05

Electronic water pre-treatment equipment and methods

#117
20180179097
2018-06-28

System and methods for water treatment

#118
20180155209
2018-06-07

Water purification device

#119
20180154290
2018-06-07

Gravity-fed water purification system

#120
20180141838
2018-05-24

PORTABLE WATER PURIFIER

#121
20180141825
2018-05-24

Multi-configuration water purification system and method

#122
20180134582
2018-05-17

Water filtration apparatus and a method of using thereof

#123
20180118597
2018-05-03

PORTABLE OUTDOOR WATER PURIFIER

#124
20180050926
2018-02-22

Multi-stage filter assembly

#125
20180050925
2018-02-22

Portable, dual-orifice filtered water dispenser

#126
20180044201
2018-02-15

LIQUID CONTAINERS HAVING FILTERS AND RELATED METHODS

#127
20180036994
2018-02-08

Membrane-coated sintered porous media for sample collection

#128
20180029898
2018-02-01

Personal water filter device

#129
20180022620
2018-01-25

Water Filtration Device

#130
20180022619
2018-01-25

SYSTEMS AND METHODS FOR REDUCING MEMBRANE CREEP IN WATER FILTRATION SYSTEMS

#131
20170369342
2017-12-28

Wastewater filtration system

#132
20170320760
2017-11-09

Personal advanced oxidation water treatment system

#133
20170295914
2017-10-19

Multipurpose bag and method of use thereof

#134
20170283123
2017-10-05

Fluid container with internal perforated compartment

#135
20170266621
2017-09-21

Portable liquid-filtration device

#136
20170233269
2017-08-17

WATER TREATMENT DEVICE

#137
20170232369
2017-08-17

Flexible container for concentrated product

#138
20170231877
2017-08-17

Flexible container for concentrated product

#139
20170174528
2017-06-22

WATER PURIFIER

#140
20170128863
2017-05-11

Water filtration device for purifying water

#141
20170127774
2017-05-11

Survival Rod System

#142
20170081209
2017-03-23

Pressurized hydration filtration system

#143
20170066659
2017-03-09

Outdoor water purifier with backwashing function

#144
20170008774
2017-01-12

Water filter assembly for a beverage dispenser

#145
20170007010
2017-01-12

Duo Liquid Dispersing Water Bottle for Pets or Persons

#146
20170001880
2017-01-05

Lid for filter-as-you-pour container system

#147
20160376162
2016-12-29

Filter assembly for filter as you pour filtration

#148
20160361675
2016-12-15

COMMODITY WATER PURIFIER

#149
20160289085
2016-10-06

Automatic flow control based on sensed effectiveness indicators to produce effectively treated water with a portable water treatment unit

#150
20160272512
2016-09-22

Water purification device

#151
20160251234
2016-09-01

Portable water bottle assembly having a replaceable filter cartridge

#152
20160250573
2016-09-01

MULTI-LAYERED COMPOSITE FILTER MEDIA AND PLEATED FILTER ELEMENT CONSTRUCTED THEREFROM

#153
20160236117
2016-08-18

Liquid filter device

#154
20160221837
2016-08-04

INDOOR AND OUTDOOR WATER FILTERING APPARATUS

#155
20160200598
2016-07-14

Water filtration system having selectively configurable filtration capabilities

#156
20160200590
2016-07-14

Compound water filtering jug

#157
20160184467
2016-06-30

Mobile UV sterilization device and method

#158
20160167980
2016-06-16

FILTER HOUSING FOR FILTER AS YOU POUR FILTRATION

#159
20160159662
2016-06-09

Fluid purification device with flexible housing

#160
20160158704
2016-06-09

Method for Manufacturing a Fluid Purification Device

#161
20160107898
2016-04-21

FILTERING WATER BOTTLE

#162
20160106093
2016-04-21

Antibacterial cryogel and porous hydrogel, their preparation method, and their use for disinfecting water

#163
20160096740
2016-04-07

Drinking Water Filtering Device

#164
20160031720
2016-02-04

Roll-up water bottle with closure/filter assembly

#165
20160031719
2016-02-04

Collapsible water filter

#166
20150374169
2015-12-31

Water filter device

#167
20150353383
2015-12-10

Filter assembly with locking cover

#168
20150353376
2015-12-10

PORTABLE WATER PURIFICATION AND STORAGE RESERVOIR APPARATUSES

#169
20150336804
2015-11-26

Compositions and methods for preparing copper-containing paper and uses thereof

#170
20150329376
2015-11-19

Method and apparatus of flush pump feature for portable liquid purifying filter

#171
20150307265
2015-10-29

WATER BOTTLE WITH STRAW HAVING INTEGRATED FILTER AND DOWNSTREAM FLAVOR TABLET

#172
20150258477
2015-09-17

Reusable water filter cartridge device

#173
20150246824
2015-09-03

Filter cartridges for jug container

#174
20150166364
2015-06-18

Method and apparatus for reservoir free and ventless water filtering

#175
20150165356
2015-06-18

Squeezable beverage bottle and filter system

#176
20150151988
2015-06-04

Drinking water purification device

#177
20150122725
2015-05-07

Water filtration apparatus with compostable filter

#178
20150122710
2015-05-07

Drinking container and filter assembly

#179
20150041385
2015-02-12

Method of manufacturing a cartridge for a fluid treatment system

#180
20150034545
2015-02-05

Water Purifiers Having Ultraviolet Light Emitting Diodes

#181
20150034544
2015-02-05

FILTER STRAW

#182
20150014247
2015-01-15

Field water purification system filter

#183
20140374339
2014-12-25

Drinking water filtration and/or purification apparatus

#184
20140367318
2014-12-18

Fluid container with internal perforated compartment

#185
20140339177
2014-11-20

Bottle system and method for filtering or treating a beverage

#186
20140332386
2014-11-13

Method of building massively-parallel ion concentration polarization separation device

#187
20140263014
2014-09-18

Water Filtration Device

#188
20140251905
2014-09-11

Point of use filtration system with backwash

#189
20140202948
2014-07-24

Portable Liquid Purifying Apparatus

#190
20140197084
2014-07-17

Seawater desalination unit

#191
20140183117
2014-07-03

APPARATUS FOR TREATING A LIQUID

#192
20140175014
2014-06-26

Water purification device

#193
20140158641
2014-06-12

Disinfecting water device

#194
20140158640
2014-06-12

Portable pathogen deactivation method and apparatus

#195
20140124458
2014-05-08

DRINKING CONTAINER WITH FILTER FILLING RESERVOIR

#196
20140124428
2014-05-08

UNIHOUSING PORTABLE WATER FILTRATION SYSTEM

#197
20140102973
2014-04-17

WATER PURIFYING SYSTEM

#198
20140102965
2014-04-17

Solar powered water purification canteen

#199
20140076792
2014-03-20

Fluid treatment apparatus and method of using same

#200
20140027365
2014-01-30

PORTABLE FILTRATION WATER BOTTLE

#201
20140014571
2014-01-16

SPORTS BOTTLE TOP WITH AXIAL FLOW FILTER DEVICE

#202
20140008310
2014-01-09

Filtration container assemblies and methods

#203
20140008302
2014-01-09

Drinking water purification device

#204
20140008285
2014-01-09

PLEATED FILTER

#205
20130334121
2013-12-19

WATER PURIFYING DEVICE

#206
20130319927
2013-12-05

Water filtering device

#207
20130319915
2013-12-05

Water bottle with flow meter

#208
20130319084
2013-12-05

Method and apparatus of flush pump feature for portable liquid purifying filter

#209
20130264262
2013-10-10

Universal filter system for fluid containers

#210
20130199989
2013-08-08

Squeezable beverage bottle and filter system

#211
20130056403
2013-03-07

Compact fluid purification device with manual pumping mechanism

#212
20130048578
2013-02-28

Water Bottle with Pressurized Pump Filtration System

#213
20130048555
2013-02-28

Field water purification system

#214
20130043149
2013-02-21

Cap for Drinking Container

#215
20130037469
2013-02-14

INTEGRATED WATER FILTER AND CONTAINER

#216
20130032566
2013-02-07

COMPOUND SPORTS WATER BOTTLE

#217
20130032542
2013-02-07

PERSONAL PORTABLE WATER PURIFICATION DEVICE

#218
20130015136
2013-01-17

System and method for water purification and desalination

#219
20120325735
2012-12-27

WATER FILTER ASSEMBLY AND FILTER ELEMENT

#220
20120312730
2012-12-13

Filter block having a hollow center

#221
20120298583
2012-11-29

Drinking straw with hollow fibre liquid filter

#222
20120292261
2012-11-22

Personal advanced oxidation water treatment system

#223
20120292260
2012-11-22

Water purification system

#224
20120292238
2012-11-22

Pressurized water filtration system

#225
20120292234
2012-11-22

Water enhancement system

#226
20120279927
2012-11-08

Solar water pasteurizer

#227
20120267314
2012-10-25

Gravity powered liquid purification system

#228
20120261322
2012-10-18

Water filtering device

#229
20120261315
2012-10-18

Dual stage ultrafilter devices in the form of portable filter devices, shower devices, and hydration

#230
20120261283
2012-10-18

Water container cap for holding additives to water

#231
20120217207
2012-08-30

WATER PURIFICATION SYSTEM

#232
20120186980
2012-07-26

METHODS AND SYSTEMS FOR SEPARATING IONS FROM FLUIDS

#233
20120152844
2012-06-21

Liquid extraction method employing dip tube

#234
20120152811
2012-06-21

PURIFICATION WATER PACK

#235
20120055862
2012-03-08

Filtering water bottle

#236
20120031830
2012-02-09

Transporting and Treating Water

#237
20120017766
2012-01-26

WATER CONTAINER CAP WITH FILTER FOR HOLDING ADDITIVES TO WATER

#238
20110303561
2011-12-15

Cap for drinking container

#239
20110284479
2011-11-24

Double chamber water purification device

#240
20110278216
2011-11-17

Drinking container and filter assembly

#241
20110233119
2011-09-29

SPORTS BOTTLE DEVICE WITH FILTER ISOLATED FROM FILTERED FLUID

#242
20110233118
2011-09-29

SPORTS BOTTLE DEVICE WITH FILTER ISOLATED FROM FILTERED FLUID

#243
20110226706
2011-09-22

Filter comprising a halogen release system and chitosan

#244
20110220568
2011-09-15

PORTABLE FILTER ASSEMBLIES

#245
20110198279
2011-08-18

Beverage bottle filter system

#246
20110192785
2011-08-11

HYDRATION PACK

#247
20110186496
2011-08-04

Appliances for the alkalizing of water

#248
20110168644
2011-07-14

Bottle with an integrated filtration assembly that is manually operated using a plunger

#249
20110117257
2011-05-19

Drinking container with filter filling reservoir

#250
20110114574
2011-05-19

Drinking container with filter filling reservoir

#251
20110104017
2011-05-05

PORTABLE UV WATER TREATMENT SYSTEM

#252
20110062153
2011-03-17

Filter cup assembly

#253
20110031186
2011-02-10

CALCIUM CARBONATE AND CALCIUM CARBONATE-CONTAINING MATERIALS FOR REMOVING BIOAGENTS FROM WATER

#254
20110017668
2011-01-27

WATER PURIFICATION DEVICE

#255
20110011809
2011-01-20

Water purification method

#256
20100320128
2010-12-23

Portable water purifiers and methods of purifying

#257
20100307976
2010-12-09

Drinking water purification device

#258
20100294703
2010-11-25

Water enhancement system

#259
20100288129
2010-11-18

DEVICE FOR TREATING AND PURIFYING A LIQUID PRODUCT

#260
20100276347
2010-11-04

PORTABLE WATER PURIFICATION DEVICE

#261
20100258507
2010-10-14

Photocatalytic intermittent flow-through purification module

#262
20100237002
2010-09-23

Personal filtration device

#263
20100230345
2010-09-16

WATER KETTLE CAPABLE OF FILTERING IMPURITIES FROM WATER

#264
20100219151
2010-09-02

Multi-compartment water purification bottle having a replaceable filter

#265
20100213129
2010-08-26

APPARATUS AND METHOD FOR PURIFYING WATER BY FORWARD OSMOSIS

#266
20100206799
2010-08-19

Liquid Filter

#267
20100193462
2010-08-05

Bottle Adapted To Thermally Condition And/Or Filter Consumable Beverages, Kit For Use With Consumable Beverages, And A Method For Customizing Bottles

#268
20100187183
2010-07-29

COMBINATION PERSONAL WATER BOTTLE FILTER AND FLUID PUMP

#269
20100170839
2010-07-08

Water bottle with filter

#270
20100170834
2010-07-08

Portable fluid filtration device

#271
20100155500
2010-06-24

Safety drinking straw

#272
20100125105
2010-05-20

Antimicrobial device and materials for fluid treatment

#273
20100102002
2010-04-29

Portable drinking water purification device

#274
20100084290
2010-04-08

HANDS FREE HYDRATION SYSTEM

#275
20100078369
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