| Patents for B01D 67 - Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus (11,858) |
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| 01/16/1991 | EP0407900A2 Flat or capillary membrane manufactured from a mixture of polyvinylidene fluoride and a second by chemical reaction hydrophilable polymer |
| 01/16/1991 | EP0407684A1 Process for the preparation of microporous film or hollow fibre membranes from polyetheretherketones dissolved in high boiling point polar organic solvents |
| 01/16/1991 | EP0407665A1 Affinity membranes having pendant groups and processes for the preparation and use thereof |
| 01/16/1991 | EP0407566A1 Highly air permeable expanded polytetrafluoroethylene membranes and process for making them. |
| 01/15/1991 | US4985280 Process for hydrophobization of microbacteria retaining air filter |
| 01/15/1991 | US4985147 Liquid separation membrane for pervaporation |
| 01/15/1991 | CA2021165A1 Isotropic or anisotropic microporous syndiotactic polystyrene membranes and processes for preparation |
| 01/14/1991 | CA2009836A1 Film fiber, and microporous membranes of poly(etheretherketone)dissolved in high boiling point polar organic solvents |
| 01/12/1991 | CA2020597A1 Preparation of poly(phenylene oxide) asymmetric gas separation membranes |
| 01/09/1991 | EP0407172A1 Aromatic polyimide separation membrane |
| 01/08/1991 | US4983291 Reverse osmosis, desalination, coating support with polyamine, reacting with polyacyl halide, polysulfonyl halide or polyisocyanate |
| 01/08/1991 | US4983191 Blend with epoxy resin, separation of oxygen from nitrogen |
| 01/06/1991 | CA2020398A1 Aromatic polyimide separation membrane |
| 01/01/1991 | US4981590 Composite ceramic micropermeable membrane, process and apparatus for producing such membrane |
| 01/01/1991 | US4981497 Permselective |
| 12/25/1990 | US4980101 Anisotropic microporous syndiotactic polystyrene membranes and a process for preparing the same |
| 12/25/1990 | US4980069 Process for production of a semi-permeable membrane, a membrane manufactured by said process and the use of such a membrane for gas or liquid separation |
| 12/19/1990 | CN1047812A Treatment for reverse osmosis membranes |
| 12/15/1990 | WO1990015883A1 Dna sequencing using low fluorescence background electroblotting membrane |
| 12/15/1990 | CA2058943A1 Dna sequencing using low fluorescence background electroblotting membrane |
| 12/12/1990 | EP0402196A2 Hydrophilic porous membrane and process for preparing the same |
| 12/12/1990 | EP0401964A2 Treatment for reverse osmosis membranes |
| 12/11/1990 | US4976901 Microporous membranes from isotactic polystyrene and syndiotactic polystyrene |
| 12/11/1990 | US4976869 Composite semipermeable membranes and method of making same |
| 12/11/1990 | US4976856 Process for preparing non-porous, selective membrane layers |
| 12/11/1990 | CA1277554C Hydrophilic porous membrane and method for manufacture thereof |
| 12/07/1990 | CA2014614A1 Treatment for reverse osmosis membranes |
| 12/05/1990 | EP0401005A1 Amine-modified polyimide membranes |
| 12/04/1990 | US4975228 Process for preparing membranes from tetrahalobisphenol polycarbonates |
| 12/04/1990 | US4975190 Organic polymer separation membrane having fluorene skeleton and oxygen enrichment device utilizing same |
| 12/01/1990 | CA2017831A1 Amine-modified polyimide membranes |
| 11/29/1990 | WO1990014684A1 Preparation of substrates |
| 11/29/1990 | WO1990014149A1 Surface fluorination of membranes |
| 11/29/1990 | WO1990011820A3 Porous articles |
| 11/28/1990 | EP0399568A2 Hydrophilic porous membrane |
| 11/28/1990 | CN1047317A Porous articles |
| 11/28/1990 | CN1010556B Method for shaping anodic aluminium oxide sheet |
| 11/22/1990 | EP0398601A1 Hydrophobic membranes |
| 11/22/1990 | EP0398093A2 Composite membranes, process for their production and their use |
| 11/18/1990 | CA2016960A1 Composite membranes, processes for their preparation and their use |
| 11/15/1990 | WO1990013353A1 Cross-linked gas selective membranes |
| 11/13/1990 | US4969997 Fluid-impermeable areas on porous membrane filters and their application |
| 11/13/1990 | CA1276361C Sulphonated polyaryletherketone solutions for semi-permeable membranes |
| 11/13/1990 | CA1276360C Polymer solutions |
| 11/07/1990 | EP0396329A1 Method for reducing fouling |
| 11/07/1990 | EP0135514B1 Cross linked porous membranes |
| 11/07/1990 | CN1010317B Modified polymeric surfaces and process for preparing same |
| 11/06/1990 | US4968733 Dissolving polymer in caprolactam as primary solvent |
| 11/06/1990 | US4968533 Method of preparing membranes with low protein adsorbability |
| 11/06/1990 | US4968470 Containing silicon or germanium |
| 11/06/1990 | US4968430 Composite membranes, processes for their preparation and their use |
| 11/01/1990 | WO1990007545A3 Stabilized microporous materials and hydrogel materials |
| 10/31/1990 | EP0395184A1 Modified membrane |
| 10/31/1990 | EP0395133A1 A process for preparing a microporous membrane and such a membrane |
| 10/31/1990 | CN1046472A Chlorine-resistant semipermeable membranes |
| 10/30/1990 | US4966699 Membranes treated with reagent reactive with polar groups |
| 10/28/1990 | CA2015465A1 Modified membrane |
| 10/24/1990 | EP0394193A2 Coated membranes |
| 10/23/1990 | US4965291 Method of manufacturing porous membrane and porous membrane manufactured by the same method |
| 10/23/1990 | US4964998 Use of treated composite polyamide membranes to separate concentrated solute |
| 10/23/1990 | US4964992 Perforation of non-porous membrane to controlled depth |
| 10/23/1990 | US4964991 Flat permeable membrane and for manufacture thereof |
| 10/23/1990 | US4964990 Filtration membranes and method of making the same |
| 10/23/1990 | US4964989 Membranes with low protein adsorbability |
| 10/18/1990 | WO1990011821A1 Process for the preparation of chlorine-resistant polyester semipermeable membranes |
| 10/18/1990 | WO1990011820A2 Porous articles |
| 10/17/1990 | EP0392982A2 Solvent stable membranes |
| 10/17/1990 | EP0392395A1 Use of a microporous membrane composed of a polymer substrate and a surface coating of the substrate by a polyacrylic acid- or -methacrylic acid derivative for the filtration of beer |
| 10/17/1990 | EP0392362A2 Surface modifying process for polymer membranes |
| 10/16/1990 | US4963494 Enzyme immobilization in an anisotropic ultrafiltration membrane |
| 10/16/1990 | US4963266 Crosslinked polymer membrane |
| 10/16/1990 | US4963261 Formed by heat fusion of polymer particles; time-release agents; drug delivery |
| 10/16/1990 | CA1275207C Hydrophilized membrane of porous hydrophobic material and process for preparing the same |
| 10/11/1990 | CA2014234A1 Process for the preparation of chlorine-resistant polyester semipermeable membranes |
| 10/09/1990 | US4962140 Process for producing cellulosic dialysis membranes having improved biocompatibility and device for carrying out the process |
| 10/09/1990 | US4961853 Crosslinked polymer formed and held on surface; heat resistance to withstand wet steam sterilization |
| 10/09/1990 | US4961852 Polyaldehyde activated membranes |
| 10/02/1990 | US4960518 Reducing the passage of sulfuric acid; reverse osmosis membrane |
| 10/02/1990 | US4960517 Reverse osmosis |
| 09/26/1990 | EP0340262A4 Semi-permeable membranes with an internal discriminating region |
| 09/25/1990 | US4959150 Filter with hydroxyacrylic ester coating |
| 09/25/1990 | US4959082 Polycarbonate gas separation membranes containing substituted benzenes and processes for making and using the same |
| 09/20/1990 | WO1990010494A1 Chlorine-resistant semipermeable membranes |
| 09/19/1990 | EP0221959B1 Removing and recovering plant polyphenols |
| 09/18/1990 | US4957817 Film, fiber, and microporous membranes of poly(etheretherketone)dissolved in high boiling point polar organic solvents |
| 09/12/1990 | EP0386784A2 Permselective membrane and process for producing the same |
| 09/11/1990 | US4956219 method of producing perforations in a solid material in sheet form, an irradiation device for working the method, and the resulting perforated material |
| 09/05/1990 | CN1009433B Anode aluminium oxide diaphragm and process for manufacturing same and its application |
| 09/04/1990 | US4954381 Preparation of porous substrates having well defined morphology |
| 09/04/1990 | US4954256 Hydrophobic membranes |
| 08/28/1990 | US4952349 Macroporous polymeric membranes for the separation of polymers and a method of their application |
| 08/28/1990 | US4952318 Separations of oxygenates |
| 08/28/1990 | US4952220 Surface treatment using high energy electromagnetic radiation |
| 08/23/1990 | WO1990009232A1 Polymer membranes based on polyvinylidene fluoride |
| 08/22/1990 | EP0383667A1 Method of creating an environment for the production of high-performance composite elements |
| 08/21/1990 | US4950314 Crosslinked polyolefin or polyarylene oxide |
| 08/16/1990 | EP0382009A1 Semi-permeable membrane made of an homogeneously mixed polymeric alloy |
| 08/16/1990 | EP0381757A1 Medical instrument and production thereof |
| 08/16/1990 | DE3903729A1 Microporous membrane, process for the production thereof and use thereof |
| 08/14/1990 | US4948508 Surface treatment of aromatic hydrophobic polymer with epoxide, friedel-crafts catalyst |