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Class Information
Number: 210/500.36
Name: Liquid purification or separation > Filter > Material > Semipermeable membrane > Organic > Alkene other than vinyl
Description: Subject matter comprising an aliphatic unsaturated hydrocarbon containing a nonterminal carbon to carbon double bond.


Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
7459085 Microporous hydrophilic membrane Dec. 2, 2008
7455772 Hollow-fiber porous water filtration membrane of vinylidene fluoride resin and process for producing the same Nov. 25, 2008
7449111 Resins containing ionic or ionizable groups with small domain sizes and improved conductivity Nov. 11, 2008
7442303 Microporous filter membrane, method of making microporous filter membrane and separator employing microporous filter membranes Oct. 28, 2008
7442302 Highly water-permeable blood purifier of hollow-fiber membrane type Oct. 28, 2008
7438193 Nanoporous membrane and method of fabricating the same Oct. 21, 2008
7429343 Process for producing polyolefin membrane with integrally asymmetrical structure Sep. 30, 2008
7410525 Mixed matrix membranes incorporating microporous polymers as fillers Aug. 12, 2008
7381331 Hydrophilic membrane and associated method Jun. 3, 2008
7378020 Fluoropolymer membrane May. 27, 2008
7374680 Filtration matrix May. 20, 2008
7374679 Asymmetric porous polytetrafluoroethylene membrane for a filter May. 20, 2008
7368056 Production of potable liquids May. 6, 2008
7364659 Preparation of asymmetric polyethylene hollow fiber membrane Apr. 29, 2008
7351338 Porous membrane of vinylidene fluoride resin and process for producing the same Apr. 1, 2008
7347938 Use of hydrophobically modified copolymers based on N-vinyl monomers for the production of membranes Mar. 25, 2008
7306729 Porous PTFE materials and articles produced therefrom Dec. 11, 2007
7284668 Microporous membrane substrate having caustic stable, low protein binding surface Oct. 23, 2007
7247238 Poly(ethylene chlorotrifluoroethylene) membranes Jul. 24, 2007
7241367 Permeable membrane diaphragm of different layers for electroytic cells Jul. 10, 2007
7226541 Membrane polymer compositions Jun. 5, 2007
7172075 Defect free composite membranes, method for producing said membranes and use of the same Feb. 6, 2007
7169304 Porous polymer water filter and methods of use in refrigeration Jan. 30, 2007
7165682 Defect free composite membranes, method for producing said membranes and use of the same Jan. 23, 2007
7160464 Methods for removal, purification, and concentration of viruses and methods of therapy based thereupon Jan. 9, 2007
7141168 Porous polyolefin membrane Nov. 28, 2006
7138057 Filter media Nov. 21, 2006
7112280 Gas porous polymer filter and methods of use Sep. 26, 2006
7094349 Organic porous article having selective adsorption ability for boron, and boron removing module and ultra-pure water production apparatus using the same Aug. 22, 2006
7049382 Activated carbon filter May. 23, 2006
6994811 Method of manufacturing membranes and the resulting membranes Feb. 7, 2006
6986844 Solvent-resistant microporous polybenzimidazole membranes and modules Jan. 17, 2006
6977043 Skinned hollow fiber membrane and method of manufacture Dec. 20, 2005
6921482 Skinned hollow fiber membrane and method of manufacture Jul. 26, 2005
6913696 Separation of components of organic liquids Jul. 5, 2005
6908553 Composite membrane with particulate matter substantially immobilized therein Jun. 21, 2005
6902676 Porous hydrophilic membranes Jun. 7, 2005
6899834 Composite membranes and methods for making such membranes May. 31, 2005
6884375 Hydrophobic membrane materials for filter venting applications Apr. 26, 2005
6884350 Modified membranes Apr. 26, 2005
6861001 Methods for removal, purification, and concentration of viruses, and methods of therapy based thereupon Mar. 1, 2005
6854603 Porous membrane structure and method Feb. 15, 2005
6852223 Asymmetric porous polytetrafluoroethylene membrane and process for preparing the same Feb. 8, 2005
6830717 Cast membrane structures for sample preparation Dec. 14, 2004
6824680 Preparation of microporous films from immiscible blends via melt processing and stretching Nov. 30, 2004
6811696 Hydrophobic membrane materials for filter venting applications Nov. 2, 2004
6802973 Microporous hollow fiber membranes from perfluorinated thermoplastic polymers Oct. 12, 2004
6802972 Microporous hollow fiber membranes from perfluorinated thermoplastic polymers Oct. 12, 2004
6793821 Super water-repellent organic/inorganic composite membrane Sep. 21, 2004
6773797 Extruded poly (ethylene oxide) and filler composites and films having enhanced ductility and breathability Aug. 10, 2004

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