| Patents for B01D 67 - Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus (11,858) |
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| 05/28/1991 | US5019261 Permeable, porous polymeric membrane with hydrophilic character methods for preparing said membranes and their use |
| 05/28/1991 | US5019260 Surface treated polyvinylidene fluoride |
| 05/24/1991 | CA2003777A1 Process for the solvent-induced crystallization of amorphous poly(etheretherketone)-type polymers and the article formed thereby |
| 05/22/1991 | EP0423249A4 Extrusion of hollow fibre membranes |
| 05/21/1991 | US5017670 Graft polymers |
| 05/15/1991 | EP0427338A1 Process for the separation of solvents from hydrocarbons dissolved in said solvents |
| 05/15/1991 | EP0426686A1 Multifunctional thrombo-resistant coatings and methods of manufacture |
| 05/14/1991 | US5015387 Method for activating cellulosic membrane, activated cellulosic membrane, method of fixing physiologically active substance on the activated cellulosic membrane and physiologically active substance-fixed membrane |
| 05/14/1991 | US5015275 Filtration, distillation, stripping membranes |
| 05/11/1991 | CA2029567A1 Process for the separation of solvents from hydrocarbons dissolved in said solvents |
| 05/07/1991 | US5013767 Membrane formind dope, aromatic polysulfone, solvent |
| 05/07/1991 | US5013439 Microporous membranes having increased pore densities and process for making the same |
| 05/02/1991 | DE4031120A1 Membrane micro-filters for treating liquids and/or gases - used in the form of particles, chips of fibre obtd. by disintegrating scrap material from prodn. of membrane micro-filters |
| 04/30/1991 | US5011518 Permselective membrane and process for producing the same |
| 04/30/1991 | CA1283582C Modified polymeric surfaces and process for preparing same |
| 04/24/1991 | EP0424118A2 Hardened saccharinic gum formed-in-place membranes |
| 04/24/1991 | EP0424004A1 Surfactant treatment of polyaramide gas separation membranes |
| 04/24/1991 | EP0423249A1 Extrusion of hollow fibre membranes. |
| 04/23/1991 | US5009824 Process for preparing an asymmetrical macroporous membrane polymer |
| 04/18/1991 | DE3941861C1 Membrane for pervaporation, vapour permeation and gas sepn. - made by compacting porous polymer support layer by chemical or thermal means |
| 04/17/1991 | EP0422886A1 Production of aromatic polyimide membranes |
| 04/17/1991 | EP0422884A1 Surfactant treatment of aromatic polyimide gas separation membranes |
| 04/17/1991 | EP0422506A1 Membranes formed from unsaturated polyimides |
| 04/17/1991 | EP0408688A4 Porous membranes |
| 04/16/1991 | US5007944 Treating polyetherimide membrane with solvent or swelling agent |
| 04/12/1991 | CA2026969A1 Membranes formed from unsaturated polyimides |
| 04/11/1991 | CA2027021A1 Surfactant treatment of aromatic polyimide gas separation membranes |
| 04/11/1991 | CA2027008A1 Production of aromatic polyimide membranes |
| 04/11/1991 | CA2027005A1 Surfactant treatment of polyimide gas separation membranes |
| 04/10/1991 | EP0421916A2 Composite membranes and processes using them |
| 04/10/1991 | EP0420847A1 Membrane filtration apparatus and method of making a membrane filtration unit |
| 04/09/1991 | US5006576 Ion exchange membrane |
| 04/09/1991 | US5006287 Affinity membranes having pendant hydroxy groups and processes for the preparation and use thereof |
| 04/09/1991 | US5006256 Affinity membranes having pendant hydroxy groups and processes for the preparation and use thereof |
| 04/09/1991 | US5006229 Method of manufacturing a unit assembly of filter membranes, a mold used in the method, and a product obtained from the method |
| 04/09/1991 | US5006187 Plugged microporous film |
| 04/07/1991 | CA2027114A1 Hydrophobic microporous membrane |
| 04/03/1991 | EP0420832A2 Asymmetric gas separation membranes having improved strength |
| 04/03/1991 | EP0420765A2 Blood plasma-separating membrane and blood plasma separator using the membrane |
| 04/03/1991 | EP0180599B1 High flux membrane |
| 04/02/1991 | US5004548 Method and apparatus for rinsing and priming an exchanger |
| 04/02/1991 | US5004543 Charge-modified hydrophobic membrane materials and method for making the same |
| 03/28/1991 | CA2026242A1 Asymmetric gas separation membranes having improved strength |
| 03/27/1991 | EP0419396A1 Hydrophilic membrane for use in ultrafiltration and method of preparation |
| 03/27/1991 | EP0418517A2 Separating membrane and separation method |
| 03/26/1991 | CA1282011C Rapid vapour transport through unwetted porous barriers |
| 03/21/1991 | WO1991003317A1 Microporous adsorbent |
| 03/21/1991 | WO1991003312A1 Process for preparing a microfiltration membrane and membrane so obtained |
| 03/21/1991 | WO1991003310A1 Process for surface-grafting of formed materials, in particular also microporous membranes made from nitrogen containing polymers |
| 03/20/1991 | EP0417908A2 Membrane |
| 03/20/1991 | CN1012039B Composite membranes for enhanced fluid separation |
| 03/19/1991 | US5000848 Rotary filtration device with hyperphilic membrane |
| 03/19/1991 | CA1281625C Waterproof article and method of, making a waterproof article |
| 03/16/1991 | CA2025209A1 Membrane |
| 03/14/1991 | DE4028355A1 Microporous adsorbent |
| 03/13/1991 | EP0416586A1 Porous membrane having hydrophilic and cell growth promotions surface and process |
| 03/12/1991 | US4999110 Regenerated cellulose membrane formed by esterification with organic acids for blood compatibility in dialysis |
| 03/07/1991 | DE4028356A1 Open-pore polysulphone-amide micro:filtration membrane - by casting film from soln. contg. polymer, pptn. agent with air at 20 deg C or above, and coagulating in a pptn. bath |
| 03/06/1991 | CA2024575A1 Hydrophilic membrane for use in ultrafiltration or microfiltration and method of preparation |
| 02/28/1991 | DE3927787A1 Composite membrane contg. thermoplastic polymer - useful in pervaporation and gas separation processes |
| 02/26/1991 | CA1280564C Hollow fiber |
| 02/24/1991 | CA2023691A1 Composite membrane, its use and processes for pervaporation and gas separation using this composite membrane |
| 02/21/1991 | WO1991001791A1 Process for treating a porous substrate to achieve improved water and oil repellency |
| 02/20/1991 | EP0413148A2 Polycarbonate gas separation membranes and processes for making and using the same |
| 02/20/1991 | CN1049297A Microporous membranes |
| 02/20/1991 | CN1049296A Separating membrane and separation method |
| 02/19/1991 | US4994335 Lithium battery with polypropylene film; for filtration, gas exchanging |
| 02/19/1991 | CA1280262C Asymmetric semi-permeable membrane having high salt rejection |
| 02/16/1991 | WO1991002577A1 Blotting methods using polyaldehyde activated membranes |
| 02/16/1991 | CA2059549A1 Blotting methods using polyaldehyde activated membranes |
| 02/13/1991 | CN1049108A Extrusion of hollow fibre membranes |
| 02/12/1991 | US4992332 Pore walls coated with water insoluble cellulose polymer |
| 02/12/1991 | US4992221 Asymmetric gas separation membranes having improved strength |
| 02/12/1991 | US4992178 Inorganic ultrafiltration of microfiltration membrane modified by a hydrophilic polymer, its preparation process and its use for the separation of proteins |
| 02/12/1991 | US4992175 Method for improving the separation properties of semi-permeable membranes and membranes accordingly improved |
| 02/12/1991 | US4992172 Polyaldehyde activation microporous membrane |
| 02/12/1991 | CA1280042C Membrane type artificial lung and method for manufacture thereof |
| 02/10/1991 | CA2022924A1 Separating membrane and separation method |
| 02/07/1991 | WO1991001339A1 Film, fiber, and microporous membranes prepared from poly(etheretherketone) dissolved in high boiling point polar organic solvents |
| 02/07/1991 | WO1991001177A1 Membrane for extracting unsaturated hydrocarbons and process for obtaining it |
| 02/05/1991 | US4990294 Process for producing fluorocarbon membranes and membrane product |
| 02/05/1991 | US4990252 Stable membranes from sulfonated polyarylethers |
| 02/05/1991 | US4990165 Permeable membranes for enhanced gas separation |
| 01/30/1991 | EP0410357A2 Membrane having hydrophilic surface |
| 01/30/1991 | EP0409950A1 Polymer membranes based on polyvinylidene fluoride |
| 01/30/1991 | CN1011385B Method and apparatus for osmotic distillation |
| 01/24/1991 | DE3924102A1 Membran zum austrag ungesaettigter kohlenwasserstoffe sowie verfahren zu ihrer herstellung Membrane to the material outlet of unsaturated hydrocarbons and process for their production |
| 01/23/1991 | EP0409496A2 Microporous membranes |
| 01/23/1991 | EP0409416A2 Method of producing a membrane |
| 01/23/1991 | EP0408688A1 Porous membranes. |
| 01/23/1991 | EP0302928B1 Inorganic filtration membrane modified for protein separation |
| 01/23/1991 | CN1048664A Process for preparation of chlorine-resistant polyester semipermeable membranes |
| 01/22/1991 | US4987032 Functional organic thin film and method of manufacture thereof |
| 01/21/1991 | CA2021575A1 Polycarbonate gas separation membranes containing substituted benzenes and processes for making and using the same |
| 01/20/1991 | CA2021495A1 Microporous membranes |
| 01/20/1991 | CA2020845A1 Tubular membrane |
| 01/16/1991 | EP0408378A2 Hydrophilic semi-permeable PTFE membranes and their manufacture |
| 01/16/1991 | EP0408319A1 Preparation of poly(phenylene oxide) asymmetric gas separation membranes |
| 01/16/1991 | EP0408052A1 Porous membrane and production process thereof |
| 01/16/1991 | EP0408046A2 Isotropic or anisotropic microporous syndiotactic polystyrene membranes and processes for preparation |