ClassID:

30012

B01D71/36 - page 3 - CPC Classification

Classification description:

Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor; Organic material; Polyalkenyl halides containing fluorine atoms Polytetrafluoroethene

Recent Application in this class:
#601
20060229421
2006-10-12

Powders or manufactured articles having a surface hydrophilicity

#602
20060214325
2006-09-28

Continuous coating process for composite membranes

#603
20060205301
2006-09-14

Composite membrane having hydrophilic properties and method of manufacture

#604
20060204654
2006-09-14

Method of making a composite membrane

#605
20060201874
2006-09-14

Composite membrane

#606
20060157893
2006-07-20

PTFE membrane

#607
20060119015
2006-06-08

Method for producing hollow fibres

#608
20060054541
2006-03-16

Filtering apparatus, back wash method therefor, filtering device and power plant

#609
20060051647
2006-03-09

Polymer electrolyte membrane having excellent durability

#610
20060051568
2006-03-09

Composite membranes of high homogeneity

#611
20060040053
2006-02-23

Preparation of asymmetric membranes using hot-filament chemical vapor deposition

#612
20060032813
2006-02-16

Fluoropolymer membrane

#613
20060024839
2006-02-02

Inorganic carbon removal

#614
20050247629
2005-11-10

UV treated membranes

#615
20050247105
2005-11-10

Particulate filter and method of use

#616
20050238937
2005-10-27

Highly conductive ordered ion exchange membranes

#617
20050230856
2005-10-20

Hollow fiber membrane contact apparatus and process

#618
20050212160
2005-09-29

Method of processing colloidal size polytetrafluoroethylene resin particles to produce biaxially-oriented structures

#619
20050155926
2005-07-21

System and method for synthesizing a polymer membrane

#620
20050152813
2005-07-14

Method of chemical surface modification of polytetrafluoroethylene materials

#621
20050129925
2005-06-16

Treatment of porous article

#622
20050129851
2005-06-16

Treatment of porous article

#623
20050082215
2005-04-21

Microporous filter

#624
20050056538
2005-03-17

Insoluble anode with an auxiliary electrode

#625
20050049319
2005-03-03

Graft polymeric membranes and ion-exchange membranes formed therefrom

#626
20050048860
2005-03-03

Fabrication method of textile laminate

#627
20050023245
2005-02-03

Method of forming microporous membranes

#628
16905204
2021-06-22

Process and device for converting hydrogen sulfide into hydrogen gas and sulfur

#629
16582609
2020-08-11

Acoustically resistive supported membrane assemblies

#630
16381333
2020-05-05

Thin-film composite membrane and processes for the separation of alkenes from a gaseous feed mixture

#631
16245821
2022-02-22

Purification and enrichment of boron nitride nanotube feedstocks

#632
15392364
2018-01-02

Porous PTFE membranes for metal removal