ClassID:

30912

B01D2325/021 - CPC Classification

Classification description:

Details relating to properties of membranes; Details relating to pores or porosity of the membranes Pore shapes

Recent Application in this class:
#1
20250214040
2025-07-03

In Vivo Blood Filtration Membranes and Devices

#2
20250144572
2025-05-08

FILTER SCREEN

#3
20250135405
2025-05-01

HOLLOW FIBER MICROPOROUS MEMBRANE, AND GAS SEPARATION MEMBRANE MODULE WITH SAME BUILT THEREINTO

#4
20250074032
2025-03-06

BIAXIALLY ORIENTED MICROPOROUS MEMBRANE

#5
20250032994
2025-01-30

METHODS AND APPARATUS FOR FORMING APERTURES IN A SOLID STATE MEMBRANE USING DIELECTRIC BREAKDOWN

#6
20250025840
2025-01-23

High-Efficiency Degassing Polyolefin Hollow Fiber Membrane and Preparation Therefor and Use Thereof

#7
20240375061
2024-11-14

NANOPOROUS MEMBRANE

#8
20240299884
2024-09-12

METHODS AND APPARATUS FOR FORMING APERTURES IN A SOLID STATE MEMBRANE USING DIELECTRIC BREAKDOWN

#9
20240254303
2024-08-01

BASE FILMS FOR IMPREGNATION, IMPROVED IMPREGNATED PRODUCTS, AND RELATED METHODS

#10
20240181398
2024-06-06

VIRAL FILTER AND METHOD OF VIRAL FILTRATION

#11
20240151472
2024-05-09

Systems and methods for periodic nodal surface based reactors, distributors, contractors and heat exchangers

#12
20240123409
2024-04-18

POROUS POLYMERIC MEMBRANE WITH TEAR PREVENTION RING

#13
20240075193
2024-03-07

Bioartificial ultrafiltration device and methods related thereto

#14
20240034688
2024-02-01

Freeze-cast ceramic membrane for size based filtration

#15
20230398502
2023-12-14

Micropore membranes and methods of fabrication thereof using pillar templates

#16
20230277987
2023-09-07

Improved Filtration Membrane and Methods of Making and Using the Same

#17
20230271142
2023-08-31

METHODS OF PREPARING SOLID PARTICULATE MATERIALS

#18
20230212468
2023-07-06

Wax and lube base stock products using shape selective membrane separation

#19
20230191012
2023-06-22

Systems, Methods, and Devices for Removing Circulating Tumor Cells from Blood

#20
20230145516
2023-05-11

Carbon dioxide membrane filter with graphene crown pores

#21
20230138216
2023-05-04

Filter membrane and method for making the same

#22
20230116829
2023-04-13

Separation recovery system and separation recovery method

#23
20230093181
2023-03-23

PHOTOCURABLE COMPOSITIONS AND METHOD OF FORMING TOPOGRAPHICAL FEATURES ON A MEMBRANE SURFACE USING PHOTOCURABLE COMPOSITIONS

#24
20220411596
2022-12-29

Multiblock copolymer films, methods of making same, and uses thereof

#25
20220314174
2022-10-06

Micropore membranes and methods of fabrication thereof using pillar templates

#26
20220251366
2022-08-11

Isoporous self-assembled block copolymer films containing high molecular weight hydrophilic additives and methods of making the same

#27
20220242821
2022-08-04

Production method for resist composition purified product, resist pattern forming method, and resist composition purified product

#28
20220234962
2022-07-28

Freeze-cast ceramic membrane for size based filtration

#29
20220203306
2022-06-30

Combination of pyrrolidone based solvents for the production of porous membranes

#30
20220176325
2022-06-09

Porous polymeric membrane with tear prevention ring

#31
20220143560
2022-05-12

ISOPOROUS POLYMER MEMBRANES

#32
20220126241
2022-04-28

Porous membrane for single particle analysis

#33
20220106554
2022-04-07

METHOD OF USING TRACK ETCHED MEMBRANES FOR THE FILTRATION OF BIOLOGICAL FLUIDS

#34
20220016324
2022-01-20

Bioartificial ultrafiltration device and methods related thereto

#35
20220003503
2022-01-06

Systems and methods for periodic nodal surface based reactors, distributors, contactors and heat exchangers

#36
20210387147
2021-12-16

Composite material for removal of hydrophobic components from fluid mixtures

#37
20210299615
2021-09-30

High-Flux Filter Membrane with Three-Dimensional and Self-Aligned Micropores Arrays and Method for Manufacturing Same

#38
20210268448
2021-09-02

Filter screen

#39
20210229038
2021-07-29

In vivo blood filtration membranes and devices

#40
20210215584
2021-07-15

DEVICES, METHODS, AND KITS FOR SAMPLE ANALYSIS USING MICROSLIT FILTERS

#41
20210162706
2021-06-03

Biaxially oriented microporous membrane

#42
20210121618
2021-04-29

Low resistance microfabricated filter

#43
20210086143
2021-03-25

Perfluorocarbon-free membranes for membrane distillation

#44
20210086142
2021-03-25

MEMBRANE

#45
20210047613
2021-02-18

Filter for filtering nucleated cells and filtering method using the same

#46
20210016230
2021-01-21

Polymer membrane with vertically aligned pore channels and controlled pore surface chemistry

#47
20210009806
2021-01-14

Photocurable compositions and method of forming topographical features on a membrane surface using photocurable compositions

#48
20210008507
2021-01-14

Isoporous mesoporous asymmetric block copolymer materials with macrovoids and method of making the same

#49
20200360866
2020-11-19

Composite porous membrane and preparation method therefor and use thereof

#50
20200346169
2020-11-05

Porous film and method for producing same

#51
20200339770
2020-10-29

Multiblock copolymer films, methods of making same, and uses thereof

#52
20200331771
2020-10-22

Water-treatment filter module, and apparatus and method for manufacturing helical strand of water-treatment filter module

#53
20200324233
2020-10-15

Porous membrane

#54
20200298150
2020-09-24

SEPARATION RECOVERY SYSTEM AND SEPARATION RECOVERY METHOD

#55
20200268960
2020-08-27

Systems, methods, and devices for removing circulating tumor cells from blood

#56
20200238227
2020-07-30

POROUS MATERIALS FROM COMPLEX BLOCK COPOLYMER ARCHITECTURES

#57
20200197880
2020-06-25

Separation membrane

#58
20200188855
2020-06-18

Spinning crossflow filter

#59
20200179880
2020-06-11

Methods and apparatus for forming apertures in a solid state membrane using dielectric breakdown

#60
20200139306
2020-05-07

Systems And Methods For Liquid Purification

#61
20200136115
2020-04-30

Porous etched ion-track polymer membrane as a separator for a battery

#62
20200115291
2020-04-16

Freeze-cast ceramic membrane for size based filtration

#63
20200070105
2020-03-05

Microporous polyamide-imide membranes

#64
20200009510
2020-01-09

Method for manufacturing zeolite membrane structure

#65
20190367723
2019-12-05

Isoporous self-assembled block copolymer films containing high molecular weight hydrophilic additives and methods of making the same

#66
20190299166
2019-10-03

Macroporous or mesoporous polymer films in hollow fiber geometry

#67
20190269841
2019-09-05

Low resistance microfabricated filter

#68
20190255564
2019-08-22

OMNIPHOBIC POROUS MEMBRANE AND METHODS FOR PREPARING THE SAME

#69
20190216998
2019-07-18

Bioartificial ultrafiltration device and methods related thereto

#70
20190185804
2019-06-20

Cell filtration filter

#71
20190168167
2019-06-06

Composite porous hollow fiber membrane, production method for composite porous hollow fiber membrane, composite porous hollow fiber membrane module, and operation method for composite porous hollow fiber membrane module

#72
20190160433
2019-05-30

Isolation device and isolation method

#73
20190160432
2019-05-30

Isolation chip and manufacturing method of the same

#74
20190111392
2019-04-18

Smart membranes for monitoring membrane based desalination processes

#75
20190022595
2019-01-24

A METHOD OF FORMING A THIN FILM THROUGH-HOLE MEMBRANE

#76
20190001278
2019-01-03

Porous support, method for manufacturing porous support, separation membrane structure, and method for manufacturing separation membrane structure

#77
20180312803
2018-11-01

Filter for filtering nucleated cells and filtering method using the same

#78
20180311622
2018-11-01

Purification method for purifying liquid, purification method for purifying silicon compound-containing liquid, method for producing silylating agent liquid, film forming material or diffusing agent composition, filter medium and filter device

#79
20180304193
2018-10-25

Mixed matrix membrane, a method of making thereof, and a method for gas separation

#80
20180290106
2018-10-11

SYSTEM AND METHODS OF PROCESSING LIQUID THEREIN

#81
20180208728
2018-07-26

Nanoporous lyotropic liquid crystal polymer membranes with reversibly tuned pore size and selectivity, and methods using same

#82
20180169592
2018-06-21

Hollow fiber structures, methods of use thereof, methods of making, and pressure-retarded processes

#83
20180141007
2018-05-24

Methods and apparatus for forming apertures in a solid state membrane using dielectric breakdown

#84
20180115014
2018-04-26

Porous electrolyte membrane, manufacturing process thereof and electrochemical devices comprising same

#85
20180065866
2018-03-08

Submersible desalination apparatus

#86
20180065093
2018-03-08

Separation membrane

#87
20180043084
2018-02-15

Systems, methods, and devices for removing circulating tumor cells from blood

#88
20180028983
2018-02-01

Method for purifying liquid, method for producing chemical solution or cleaning solution, filter medium, and filter device

#89
20180021736
2018-01-25

Nano-pore arrays for bio-medical, environmental, and industrial sorting, filtering, monitoring, or dispensing

#90
20170312703
2017-11-02

Microporous polyvinyl fluoride planar membrane and production thereof

#91
20170304778
2017-10-26

Three dimensional nanoporous membrane having multiple independent, continuous pore systems

#92
20170296983
2017-10-19

Separation membrane structure

#93
20170266865
2017-09-21

BIAXIALLY ORIENTED POROUS MEMBRANES, COMPOSITES, AND METHODS OF MANUFACTURE AND USE

#94
20170256766
2017-09-07

Method for producing porous polyimide film

#95
20170090293
2017-03-30

Filtration filter, filtration method, production method of purified liquid chemical product for lithography, and method of forming resist pattern

#96
20170022337
2017-01-26

Multiblock copolymer films, methods of making same, and uses thereof

#97
20160346714
2016-12-01

Island etched filter passages

#98
20160340638
2016-11-24

Centrifugal dynamic filtering apparatus and cell separation system using same

#99
20160072110
2016-03-10

Method for producing porous polyimide film, porous polyimide film and separator using same

#100
20160059190
2016-03-03

LIQUID FILTERING STRUCTURE

#101
20160040232
2016-02-11

Methods and compositions for detecting non-hematopoietic cells from a blood sample

#102
20160023171
2016-01-28

Multiblock copolymers and methods of use

#103
20150343398
2015-12-03

Membrane comprising self-assembled block copolymer and process for producing the same by spray coating (IIc)

#104
20150343390
2015-12-03

Porous metallic membrane

#105
20150246326
2015-09-03

Porous polymeric membrane with high void volume

#106
20150246325
2015-09-03

Hollow fiber membrane having hexagonal voids

#107
20150246324
2015-09-03

Charged hollow fiber membrane having hexagonal voids

#108
20150246323
2015-09-03

Charged porous polymeric membrane with high void volume

#109
20150246322
2015-09-03

Porous polymeric membrane with high void volume

#110
20150246321
2015-09-03

Porous polymeric membrane with high void volume

#111
20150231573
2015-08-20

Mass transfer device and system generating vortices for particle suspension, concentration, and transport

#112
20150148436
2015-05-28

Method to fabricate functionalized conical nanopores

#113
20150093827
2015-04-02

Cell culture carrier and cell culture vessel

#114
20140302374
2014-10-09

Biaxially oriented microporous membrane

#115
20140287322
2014-09-25

Biaxially oriented microporous membrane

#116
20140223873
2014-08-14

Multilayer filter

#117
20140217013
2014-08-07

Polyketone porous film

#118
20140217012
2014-08-07

Multiblock copolymer films, methods of making same, and uses thereof

#119
20140073536
2014-03-13

Methods and compositions for detecting non-hematopoietic cells from a blood sample

#120
20140069513
2014-03-13

Microfluidic device with bendable membrane having valve passageways to provide enhanced fluidic mobility control and related methods

#121
20140048477
2014-02-20

Hybrid porous structured material, membrane including the same, and method of preparing hybrid porous structured material

#122
20140039415
2014-02-06

Macroporous filtration membrane

#123
20130072375
2013-03-21

Catalyst containing oxygen transport membrane

#124
20130005561
2013-01-03

Composite membrane with integral rim

#125
20120292255
2012-11-22

Filtration and use of metal nanoparticles as non-optical tags in chemical-, bio-chemical sensors and micro-electromechanical devices

#126
20120288618
2012-11-15

Gas diffusion electrode material and production method thereof

#127
20120273362
2012-11-01

Surface charge enabled nanoporous semi-permeable membrane for desalination

#128
20120267249
2012-10-25

SURFACE CHARGE ENABLED NANOPOROUS SEMI-PERMEABLE MEMBRANE FOR DESALINATION

#129
20120244314
2012-09-27

Microperforated polymeric film and methods of making and using the same

#130
20120178097
2012-07-12

Methods and design of membrane filters

#131
20120129252
2012-05-24

METHOD AND SYSTEM FOR CELL FILTRATION

#132
20120097610
2012-04-26

Method and apparatus for microfiltration to perform cell separation

#133
20120055878
2012-03-08

Structure for molecular separations

#134
20120037591
2012-02-16

Method of fabricating a scalable nanoporous membrane filter

#135
20120024775
2012-02-02

Filter

#136
20120018819
2012-01-26

Process for manufacturing a micromechanical structure having a buried area provided with a filter

#137
20110315558
2011-12-29

Thin film support substrate for use in hydrogen production filter and production method of hydrogen production filter

#138
20110287215
2011-11-24

Structure for molecular separations

#139
20110259816
2011-10-27

Porous hollow fiber membrane and a porous hollow fiber membrane for the treatment of a protein-containing liquid

#140
20110244443
2011-10-06

Methods, Systems and Devices for Separating Tumor Cells

#141
20110223486
2011-09-15

BIAXIALLY ORIENTED POROUS MEMBRANES, COMPOSITES, AND METHODS OF MANUFACTURE AND USE

#142
20110223407
2011-09-15

Method of producing microporous polymer membrane and microporous polymer membrane produced by the method

#143
20110203720
2011-08-25

PROCESS FOR MAKING FIBER-ON-END MATERIALS

#144
20110180399
2011-07-28

Catalyst containing oxygen transport membrane

#145
20110168551
2011-07-14

Nanopore electrode, nanopore membrane, methods of preparation and surface modification, and use thereof

#146
20110127212
2011-06-02

CRYSTALLINE POLYMER MICROPOROUS MEMBRANE, METHOD FOR PRODUCING THE SAME, AND FILTRATION FILTER

#147
20110120935
2011-05-26

CRYSTALLINE POLYMER MICROPOROUS MEMBRANE, METHOD FOR PRODUCING THE SAME, AND FILTRATION FILTER

#148
20110111412
2011-05-12

Uses of parylene membrane filters

#149
20110100828
2011-05-05

Method of producing a hydrogen production filter

#150
20110100211
2011-05-05

Method for producing carbon molecular sieve membranes in controlled atmospheres

#151
20110094884
2011-04-28

Surface charge enabled nanoporous semi-permeable membrane for desalination

#152
20110053043
2011-03-03

Nanostructured polymer membranes for proton conduction

#153
20110049044
2011-03-03

Crystalline polymer microporous membrane, method for producing same, and filter for filtration

#154
20110020950
2011-01-27

SCAFFOLD FOR COMPOSITE BIOMIMETIC MEMBRANE

#155
20100224551
2010-09-09

MICRO FLUIDIC DEVICE, SEPARATION METHOD AND SEPARATION APPARATUS

#156
20100219079
2010-09-02

METHODS FOR MAKING MEMBRANES BASED ON ANODIC ALUMINUM OXIDE STRUCTURES

#157
20100155325
2010-06-24

PARTICLE-TEMPLATED MEMBRANES, AND RELATED PROCESSES FOR THEIR PREPARATION

#158
20100155252
2010-06-24

Membrane structure and method of making

#159
20100122957
2010-05-20

Microchannel device, separation apparatus, and separation method

#160
20100098992
2010-04-22

Process for the formation of pores in a polymer matrix

#161
20100055795
2010-03-04

POROUS MEMBRANES AND METHODS OF MAKING THE SAME

#162
20100012576
2010-01-21

NANOPOROUS CARBONACEOUS MEMBRANES AND RELATED METHODS

#163
20100003575
2010-01-07

Stressed thin-film membrane islands

#164
20090321355
2009-12-31

MEMBRANES WITH EMBEDDED NANOTUBES FOR SELECTIVE PERMEABILITY

#165
20090264550
2009-10-22

MANUFACTURING METHOD OF A MEMBRANE AND A MEMBRANE THEREOF, FOR EMULSIFICATION

#166
20090239381
2009-09-24

POROUS FILM

#167
20090233351
2009-09-17

Method for controlling pressure-difference bubble transfer

#168
20090214622
2009-08-27

Nanoporous Membrane and Method of Preparation Thereof

#169
20090188864
2009-07-30

Method and apparatus for microfiltration to perform cell separation

#170
20090173693
2009-07-09

LYOTROPIC LIQUID CRYSTAL MEMBRANES BASED ON CROSS-LINKED TYPE I BICONTINUOUS CUBIC PHASES

#171
20090159526
2009-06-25

CRYSTALLINE POLYMER MICROPOROUS MEMBRANE, METHOD FOR PRODUCING SAME, AND FILTER FOR FILTRATION

#172
20090148659
2009-06-11

Porous membrane of vinylidene fluoride resin and process for producing the same

#173
20090117433
2009-05-07

Gas diffusion electrode material and production method thereof

#174
20090050564
2009-02-26

Cross-flow filtration method and cross-flow filtration device

#175
20090032470
2009-02-05

Porous PTFE materials and articles produced therefrom

#176
20080311375
2008-12-18

Method of Fabricating a Polymeric Membrane Having at Least One Pore

#177
20080237116
2008-10-02

Porous PTFE Materials and Articles Produced Therefrom

#178
20080233423
2008-09-25

Thin film support substrate for use in hydrogen production filter and production method of hydrogen production filter

#179
20080230517
2008-09-25

Thin film support substrate for use in hydrogen production filter and production method of hydrogen production filter

#180
20080121534
2008-05-29

Nanopore electrode, nanopore membrane, methods of preparation and surface modification, and use thereof

#181
20080108932
2008-05-08

MEMS filter module with multi-level filter traps

#182
20080053892
2008-03-06

Porous PTFE Materials and Articles Produced Therefrom

#183
20080025875
2008-01-31

Chemical, Particle, and Biosensing with Nanotechnology

#184
20080023337
2008-01-31

Method for the production of a metal membrane filter

#185
20080023125
2008-01-31

Processes for making fiber-on-end materials

#186
20080023015
2008-01-31

PROCESSES FOR MAKING FIBER-ON-END MATERIALS

#187
20070256562
2007-11-08

Composite membranes and methods for making same

#188
20070224507
2007-09-27

Polymer separator for a lithium battery

#189
20070196638
2007-08-23

Biaxially oriented microporous membrane

#190
20070190302
2007-08-16

Filter for purifying hydrogen and method for manufacture thereof

#191
20070175764
2007-08-02

Thin film support substrate for use in hydrogen production filter and production method of hydrogen production filter

#192
20070125701
2007-06-07

Membrane structure and method of making

#193
20070104941
2007-05-10

Anisotropic porous material

#194
20070068383
2007-03-29

Hydrogen permeation alloy and a method of manufacturing the same

#195
20070051240
2007-03-08

Method for making nano-scale filter

#196
20070029256
2007-02-08

Composite porous membrane and process for producing the same

#197
20070025883
2007-02-01

Uses of parylene membrane filters

#198
20070012624
2007-01-18

Porous PTFE materials and articles produced therefrom

#199
20070012618
2007-01-18

Microporous filter

#200
20060263548
2006-11-23

Method of producing a sheet comprising through pores and the application thereof in the production of micronic and submicronic filters

#201
20060254983
2006-11-16

Mixing vessel and method of use

#202
20060254972
2006-11-16

Membrane filter for capturing circulating tumor cells

#203
20060252054
2006-11-09

Methods and compositions for detecting non-hematopoietic cells from a blood sample

#204
20060180574
2006-08-17

Thin film support substrate for use in hydrogen production filter and production method of hydrogen production filter

#205
20060163071
2006-07-27

Nanodevice for controlled charged particle flow and method for producing same

#206
20060096948
2006-05-11

Thin film support substrate for use in hydrogen production filter and production method of hydrogen production filter

#207
20060096922
2006-05-11

Lyotropic liquid crystal nanofiltration membranes

#208
20060032494
2006-02-16

Microstructured filter

#209
20060000798
2006-01-05

Method of creating pores in a thin sheet of polyimide

#210
20050115889
2005-06-02

Stressed thin-film membrane islands

#211
20050082215
2005-04-21

Microporous filter