| Patents for B01D 71 - Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor (23,060) |
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| 04/24/1990 | US4919694 Selective gas permeation membranes and method of manufacturing them |
| 04/19/1990 | DE3844633A1 Dihydroxydiphenylcycloalkanes, their preparation, and their use for the preparation of high-molecular-weight polycarbonates |
| 04/19/1990 | CA2000018A1 Spectacular break-through in gas, isotope and liquid separations and a revolutionary advance in and a master key for membrane technology and science |
| 04/18/1990 | EP0364173A1 Microfilter device |
| 04/18/1990 | EP0363364A1 Preparation of porous aramide membranes |
| 04/18/1990 | EP0270647B1 Polyamide membranes |
| 04/18/1990 | CN1041373A Gas separating film of polyimide |
| 04/17/1990 | US4917800 Functional, photochemically active, and chemically asymmetric membranes by interfacial polymerization of derivatized multifunctional prepolymers |
| 04/17/1990 | US4917799 Polyester fibers surface roughened by solvent |
| 04/12/1990 | DE3833386A1 Aromatic polyether ketones |
| 04/11/1990 | EP0363138A1 Treating porous anodic aluminium oxide membrane |
| 04/11/1990 | EP0363123A1 Porous anodic aluminium oxide membranes |
| 04/11/1990 | EP0362898A2 Apparatus and method for separating gases |
| 04/11/1990 | EP0362603A1 Aromatic Polyethersulfones |
| 04/11/1990 | EP0362588A1 Process for preparing isotropic microporous polysulfone membranes |
| 04/11/1990 | CN1041167A Breathable microporous film and methods for making it |
| 04/11/1990 | CN1041115A Chlorine resistant semipermerable membranes |
| 04/11/1990 | CA2000458A1 Microporous peek membranes and the preparation thereof |
| 04/10/1990 | US4915834 Separation layer of polyvinyl alcohol or cellulose acetate on porous backing |
| 04/10/1990 | EP0299043A4 Microporous asymmetric polyamide membranes. |
| 04/10/1990 | CA2000055A1 Microfilter device |
| 04/10/1990 | CA1267609A1 Separation of water from organic liquids |
| 04/05/1990 | WO1990003210A1 Porous membrane and process for its manufacture |
| 04/05/1990 | DE3833385A1 Aromatic polyether sulphones |
| 04/05/1990 | CA2000045A1 Treating porous anodic aluminium oxide membrane |
| 04/04/1990 | EP0361814A2 Fluid treatment system having low affinity for proteinaceous materials |
| 04/04/1990 | EP0361628A1 Method of making membranes for gas separation and the composite membranes |
| 04/04/1990 | EP0361377A2 Pervaporation method of separating liquid organic compound mixture through aromatic imide polymer asymmetric membrane |
| 04/04/1990 | EP0361092A2 Interfacially sythesized reverse osmosis membrane containing an amine salt and processes for preparing the same |
| 04/04/1990 | EP0361085A1 Integral asymmetric polyether sulfone membrane, process for its manufacture and its use in ultrafiltration and microfiltration |
| 04/03/1990 | US4914177 Polyquinoxaline polymers, and articles comprising same |
| 04/03/1990 | US4914064 Highly aromatic polyurea/urethane membranes and their use for the separation of aromatics from non-aromatics |
| 04/03/1990 | US4913864 Mixing, kneading, extrusion mixture of polymer powder and liquid |
| 04/03/1990 | CA2000056A1 Porous anodic aluminium oxide membranes |
| 03/28/1990 | EP0360318A1 Modified poly(2,6-dimethyl-p-oxyphenylene),a process for its preparation and its use in gas-separation membranes |
| 03/28/1990 | EP0359953A1 Dihydroxydiphenylcycloalkanes, their preparation and their use for the preparation of high molecular polycarbonates |
| 03/28/1990 | EP0359834A1 Manufacture and use of composite membranes |
| 03/28/1990 | CN1040745A Process of making and using polyamide membranes useful for water softening |
| 03/27/1990 | US4912197 Highly soluble clear polyimides |
| 03/27/1990 | US4912049 Process for the preparation of cellulose film, cellulose film produced thereby, artificial skin graft and its use |
| 03/27/1990 | US4911844 Pressurization using semipermeable membrane |
| 03/22/1990 | WO1990002602A1 Chlorine-resistant semipermeable membranes |
| 03/21/1990 | EP0359636A2 Hollow cellulose fibers, method for making, and fluid processing apparatus using same |
| 03/21/1990 | EP0160050B1 Substituted aliphatic polyamide porous membranes |
| 03/20/1990 | US4910344 Using blend of polyvinyl alcohol and polyacrylic acid nonporous separation membrane |
| 03/20/1990 | US4910276 Cyclic polymerization |
| 03/20/1990 | US4910083 Ultrathin polyarylate polymer films and their preparation |
| 03/20/1990 | US4910082 Self-supporting, random orientated molecules |
| 03/20/1990 | US4909938 Reversed phase membranes |
| 03/20/1990 | US4909810 Vapor permselective membrane |
| 03/20/1990 | CA1266827A1 Controlled porosity osmotic pump |
| 03/14/1990 | EP0358271A2 Novel crystalline (metallo)silicates and process for preparing such (metallo)silicates |
| 03/14/1990 | EP0357923A2 Composite semipermeable membranes and method of making same |
| 03/14/1990 | EP0357864A1 Process for preparing reverse-osmosis membranes |
| 03/14/1990 | EP0357781A1 Process for producing composite semipermeable membrane |
| 03/14/1990 | EP0357693A1 Molecular sieve arrangement. |
| 03/13/1990 | US4908266 Ultrathin cellulose ester polymer films and their preparation |
| 03/13/1990 | US4908251 Laminated sheet of thermoplastic resin, hot melt polymer porous sheet, porous substrate |
| 03/13/1990 | US4908134 Ultrafiltration polyamide membrane and its use for recovery of dewaxing aid (OP-3454) |
| 03/07/1990 | EP0357021A2 Membrane manufacturing process |
| 03/07/1990 | CN1040154A Catalytic high molecular gas separation membrance |
| 03/07/1990 | CN1040152A Gas separation membrance with selective adsorbability |
| 03/06/1990 | US4906379 Hydrophilic article and method of producing same |
| 03/06/1990 | US4906377 Fluorocarbon membranes and process for making fluorocarbon membranes |
| 03/06/1990 | US4906374 Filtration media with low protein adsorbability |
| 03/06/1990 | US4906371 Filter element having microporous membrane |
| 02/28/1990 | EP0356208A2 Membrane filter material having excellent organic solvent resistance, method for formation of membrane filter and process for preparation of bismaleimide polymer to be used for membrane filter |
| 02/28/1990 | EP0355847A2 Method of forming planar membrane |
| 02/28/1990 | EP0355214A1 Process for producing microporous ultra-high molecular weight polyolefin membrane |
| 02/27/1990 | US4904426 Process for the production of fibers from poly(etheretherketone)-type polymers |
| 02/27/1990 | CA1266251A1 Formation of aluminium oxide film by anodization, voltage reduction and separation |
| 02/21/1990 | EP0354937A1 Composite membranes of poly(methyl methacrylate) blends |
| 02/21/1990 | CN1039738A Anion exchanger |
| 02/20/1990 | US4902763 Using group v or vi metal halide catalyst and trialkylgermyalkyne compound promoter |
| 02/20/1990 | US4902456 Fluorocarbon membranes and process for making fluorocarbon membranes |
| 02/20/1990 | US4902424 Ultrafiltration thin film membranes |
| 02/20/1990 | US4902423 Filter aids, substrates for coatings, porosity |
| 02/20/1990 | US4902422 Defect-free ultrahigh flux asymmetric membranes |
| 02/20/1990 | US4902308 Composite membrane |
| 02/20/1990 | US4902307 Synthesis of SiO2 membrane on porous support and method of use of same |
| 02/15/1990 | DE3832396A1 Dihydroxydiphenylcycloalkanes, their preparation, and their use for the preparation of high-molecular-weight polycarbonates |
| 02/14/1990 | EP0354514A2 Fluoro-oxidized polymeric membranes for gas separation and process for preparing them |
| 02/13/1990 | US4900621 Ultrathin blended cellulose nitrate polymer films and their preparation |
| 02/13/1990 | US4900449 Microporous, hydrophobic polymer blended with polymer additive |
| 02/13/1990 | US4900444 A porous membrane for blood components and method for manufacturing thereof |
| 02/13/1990 | US4900443 Casting dope of resin, pore modifier, precipitant and solvent; phase inversion |
| 02/13/1990 | US4900402 Pervaporation process of separating a liquid mixture |
| 02/13/1990 | US4900334 Flushing with water, heat treating to dry |
| 02/08/1990 | WO1990000922A1 Rotary filtration device with hyperphilic membrane |
| 02/07/1990 | EP0354040A2 Membranes prepared from blends of polybenzimidazole with polyarylates |
| 02/07/1990 | EP0353561A1 Dialysis membranes of cuoxame-stable cellulose esters and carbamates |
| 02/06/1990 | US4898674 Solvent dewaxing process |
| 01/31/1990 | EP0353148A2 Porous hollow fiber membrane of polypropylene and method for production thereof |
| 01/31/1990 | EP0352802A2 Breathable microporous film and method for making it |
| 01/31/1990 | EP0352765A2 Process for preparing membranes from tetrahalobisphenol polycarbonates |
| 01/31/1990 | EP0352330A1 Fibroin moldings, process for their preparation, heparin-immobilizing carrier, and process for its preparation |
| 01/30/1990 | US4897461 Amphiphilic polyimide precursor and process for preparing the same |
| 01/30/1990 | US4897457 From perfluoroallyl or perfluorobutenyl vinyl ether |
| 01/30/1990 | US4897092 Polyimide membrane having improved flux |
| 01/30/1990 | CA1264994A1 Process for the production of porous, permeable mineral membranes |