| Patents for B01D 69 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor (16,729) |
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| 08/02/1977 | US4039440 Reverse osmosis membrane |
| 07/05/1977 | US4033822 Enzyme-coupled ultrafiltration membranes |
| 07/05/1977 | US4033817 Pressure-driven enzyme-coupled membranes |
| 05/10/1977 | US4022944 Non-porous polycarbonate films less than 1 μm thick |
| 05/10/1977 | US4022249 Fibrous tube for membrane filtration with a tearing member |
| 04/26/1977 | US4020230 Microporous polyethylene hollow fibers and process of preparing them |
| 03/15/1977 | US4012324 Polyelectrolytes |
| 02/01/1977 | US4006069 Polymeric flat plate and gel enclosed in the open cells |
| 01/25/1977 | US4005012 An amine modified polyepihalohydrin with a polyfunctional agent on a microporous substrate |
| 12/07/1976 | US3996318 Dynamic membrane |
| 10/26/1976 | US3987790 Osmotically driven fluid dispenser |
| 10/05/1976 | US3984328 Membrane on a hollow cord |
| 09/14/1976 | US3980613 Method of manufacturing electrolysis cell diaphragms |
| 09/14/1976 | US3980456 Microporous backing layer |
| 08/17/1976 | US3975225 Thin, non-porous polycarbonate films |
| 07/13/1976 | US3969548 Method for forming a semi-permeable strip |
| 07/13/1976 | US3969452 Method for casting and handling ultra-thin reverse osmosis membranes |
| 05/11/1976 | US3956114 Ultrafiltration semipermeable membrane |
| 05/04/1976 | US3954607 Permselective membranes of diacyl hydrazide-containing aromatic polymers having selected metals complexed therewith |
| 04/20/1976 | US3951815 Composite semipermeable membranes made from polyethylenimine |
| 04/20/1976 | US3951748 Sensitized matrix for detection of disease |
| 04/13/1976 | US3950255 Supported semi-permeable membranes |
| 04/06/1976 | US3949115 Carbon |
| 04/06/1976 | US3948781 Selectively permeable membrane on hollow cord |
| 03/30/1976 | US3947351 Acid diffusion-dialysis process utilizing anion exchange membrane of 4-55 micron thickness |
| 03/23/1976 | US3945927 Diluents, film-forming polymers |
| 03/16/1976 | US3944485 Ion-exchange hollow fibers |
| 02/24/1976 | US3940469 N-alkoxyalkyl polyamide, polyvinyl alcohol |
| 01/20/1976 | US3933561 Process for manufacturing ultrathin polymer membranes and products derived therefrom |