| 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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| 07/12/1977 | US4035291 Process for separating aqueous formaldehyde mixtures |
| 07/05/1977 | US4033822 Enzyme-coupled ultrafiltration membranes |
| 07/05/1977 | US4033731 Partially crosslinked silalactone polymers, their preparation and their use |
| 06/28/1977 | US4032309 By casting |
| 06/14/1977 | US4029582 Poly(arylether-sulfone) semipermeable membrane comprising substituted halomethyl and/or quaternary nitrogen groups |
| 05/24/1977 | US4025439 Solution of mono- or copolymer of acrylonitrile coated onto surface, dipped into non-solvent, heated and dried |
| 05/17/1977 | US4024043 Single film, high performance bipolar membrane |
| 05/10/1977 | US4022944 Non-porous polycarbonate films less than 1 μm thick |
| 04/26/1977 | US4020230 Microporous polyethylene hollow fibers and process of preparing them |
| 04/26/1977 | US4020142 Chemical modification of polybenzimidazole semipermeable |
| 02/15/1977 | US4008191 Polymer alloy membranes consisting of inherently entangled blends of polymeric phosphonate and second polymer component containing ester groups or polystyrene |
| 02/15/1977 | US4008047 Blood compatible polymers for blood oxygenation devices |
| 01/25/1977 | US4005012 An amine modified polyepihalohydrin with a polyfunctional agent on a microporous substrate |
| 01/11/1977 | US4002563 Reverse osmosis |
| 12/28/1976 | US4000126 Translucent film and method for manufacturing the same |
| 11/30/1976 | US3994988 Thermoplastic copolymers of polysiloxane polycarbonate and polyester constituents |
| 11/30/1976 | US3994860 Process for improving the shrinkage resistance upon-drying membranes of sulphonated polyaryl ether by immersing the membrane in an aqueous solution of an inorganic salt of a carbonylated or hydroxylated lower carboxylic acid |
| 11/23/1976 | US3993625 Permselective polymeric membranes of organic polyamide or polyhydrazide |
| 11/16/1976 | US3992495 Method of manufacturing a semipermeable membrane from a water-soluble polymeric resin |
| 11/09/1976 | US3990963 Process for regenerating used lubricating oils |
| 10/26/1976 | US3988245 Anisotropic polyvinyl formal resin microporous membrane and its preparation |
| 10/12/1976 | US3985611 Wholly inoganic papers and membranes suitable for ion exchange made of thorium acid phosphate and process for preparing the same |
| 09/14/1976 | US3980613 Method of manufacturing electrolysis cell diaphragms |
| 09/14/1976 | US3980605 Dialkyl sulfoxide solvent |
| 09/14/1976 | US3980456 Microporous backing layer |
| 08/31/1976 | US3977967 Concentration of oils, metal oxide particles |
| 08/17/1976 | US3975455 Altering gas permeabilities of polymeric material |
| 08/17/1976 | US3975350 Hydrophilic or hydrogel carrier systems such as coatings, body implants and other articles |
| 08/17/1976 | US3975225 Thin, non-porous polycarbonate films |
| 07/13/1976 | US3969240 Polysiloxane membrane lung |
| 06/29/1976 | US3966580 Novel protein-immobilizing hydrophobic polymeric membrane, process for producing same and apparatus employing same |
| 06/15/1976 | US3963618 Polyvinyl acetals |
| 06/08/1976 | US3962212 Phosphorylated cellulose ester membrane for use in separation or concentration of substances |
| 06/08/1976 | US3962158 Hydrophilic polymer membranes of polyvinyl alcohol and chitosan |
| 06/08/1976 | US3962153 Very highly stretched polytetrafluoroethylene and process therefor |
| 05/25/1976 | US3959406 Polyelectrolyte composite of polyvinyl alcohol derivatives |
| 05/25/1976 | US3959236 Polymers and copolymers of hydroxyalkyl methacrylate sulfo esters and the method for their manufacturing |
| 05/18/1976 | US3957935 Treatment with a polyvalent alcohol |
| 05/18/1976 | US3957651 Microporous polyester membranes and polymer assisted phase inversion process for their manufacture |
| 05/18/1976 | US3957362 Hydrogels and articles made therefrom |
| 05/11/1976 | US3956136 Hydrophilic semipermeable membrane |
| 05/11/1976 | US3956114 Ultrafiltration semipermeable membrane |
| 05/04/1976 | US3954607 Permselective membranes of diacyl hydrazide-containing aromatic polymers having selected metals complexed therewith |
| 04/27/1976 | US3953566 Process for producing porous products |
| 04/20/1976 | US3951920 Permselective polymeric membrane prepared from polybenzimidazoles |
| 04/20/1976 | US3951815 Composite semipermeable membranes made from polyethylenimine |
| 04/20/1976 | US3951789 Polyamideamines |
| 04/20/1976 | US3951621 Process for separating one or more components of a gaseous mixture |
| 04/13/1976 | US3950447 Semipermeable membrane |
| 04/13/1976 | US3950257 Acrylonitrile-vinyl copolymers, solvents |
| 04/13/1976 | US3950247 Water, formaldehyde, polyvinyl chloride membranes |
| 04/06/1976 | US3949115 Carbon |
| 04/06/1976 | US3948864 Partially crosslinked silalactone polymers, their preparation and their use |
| 04/06/1976 | US3948823 Method of making permselective interpolymer membranes |
| 02/24/1976 | US3940469 N-alkoxyalkyl polyamide, polyvinyl alcohol |
| 01/27/1976 | US3935172 Reverse osmosis |
| 01/27/1976 | US3935086 Electrodialysis process |
| 01/20/1976 | US3933957 Process for producing shaped articles from an acetylenic polymer |
| 01/20/1976 | US3933653 Membranes of acrylonitrile polymers for ultrafilter and method for producing the same |
| 01/06/1976 | US3930990 Process for separating hydrocarbons |