Patents
Patents for B01D 71 - Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor (23,060)
04/1985
04/03/1985EP0135760A1 Polyether-polycarbonates for dialysis-membranes
04/03/1985EP0135593A1 Hollow fibers for use in dialysis and artificial kidney
04/03/1985EP0135514A1 Cross linked porous membranes.
04/02/1985US4508852 Compositions and method of preparation by chlorosulfonation of difficultly sulfonatable poly(ether sulfone)
04/02/1985CA1184716A1 Plasma phoresis membrane
04/02/1985CA1184715A1 Porous sulfone polymer membrane and process for its preparation
03/1985
03/27/1985EP0135069A2 Composite membrane having a surface layer of an ultrathin film of cage-shaped zeolite and processes for production thereof
03/19/1985US4505985 Membranes based on silicic acid heteropolycondensates and a process for their production
03/19/1985US4505822 Process for separating substances from one another using a fibrin gel filter
03/19/1985US4505817 Fibrin gel-containing filter of porous material
03/13/1985EP0134056A2 Method for producing a very thin, dense membrane and (supported) membrane so produced
02/1985
02/26/1985US4501835 Membranes;filters
02/26/1985US4501793 Cellulose and polymer fibers
02/26/1985US4501785 Dialysis, water treatment
02/26/1985CA1182960A1 Method for making a porous thermoresin structure
02/26/1985CA1182959A1 Reverse osmosis membrane and process for making the same
02/19/1985US4500667 Polymer blended membranes
02/12/1985CA1182258A1 Semipermeable membranes of modified styrene-based polymers, process for their manufacture and their use
01/1985
01/30/1985EP0132299A2 Starch-base semipermeable films
01/29/1985US4496535 Shape-memory, dimensional stability
01/29/1985US4496456 Method for preparing thin regenerated cellulose membranes of high flux and selectivity for organic liquids separations
01/22/1985CA1181206A1 Hollow fibre membrane for plasma separation
01/17/1985WO1985000176A1 Starch-based semipermeable films
01/16/1985EP0131559A1 Amorphous aryl substituted polyarylene oxide membranes
01/16/1985EP0131143A1 A method of treating a cellulosic hollow fiber
01/15/1985US4493928 Crosslinked chitin derivatives
01/15/1985US4493716 Apparatus for the separation of hydrogen sulfide from a gas mixture
01/15/1985US4493714 Ultrathin film, process for production thereof, and use thereof for concentrating a specified gas in a gaseous mixture
01/15/1985CA1180859A1 Method and apparatus for producing hollow metal microspheres and microspheroids
01/15/1985CA1180858A1 Semipermeable membrane
01/09/1985EP0130966A1 Cross-linked polyphenylene oxide
01/09/1985EP0130965A1 Cross-linked polyphenylene oxide
01/09/1985EP0130964A1 Amino ketone cross-linked polyphenylene oxide
01/09/1985EP0130963A1 Cross-linked polyarylene oxide membranes
01/02/1985CA1180235A Composite semipermeable membrane and process for preparation thereof
12/1984
12/27/1984EP0129420A2 Surfactant treated polyolefinic microporous materials capable of multiple re-wetting with aqueous solutions
12/27/1984EP0129295A2 An ion exchanger
12/27/1984CA1179809A Process for preparation of improved semipermeable composite membranes
12/25/1984US4490431 0.1 Micron rated polypropylene membrane and method for its preparation
12/19/1984EP0128325A2 Membrane of regenerated cellulose with diffusion properties and method for its preparation
12/18/1984US4488886 Amorphous aryl substituted polyarylene oxide membranes
12/18/1984CA1179460A1 Semipermeable membranes and process for producing the same
12/06/1984WO1984004696A1 Particle adsorption
12/05/1984EP0126994A2 Porous regenerated cellulose hollow fiber and process for preparation thereof
12/04/1984US4486376 Process for modifying porous polymeric membrane
11/1984
11/27/1984US4485056 Production of aromatic polyimide separating membranes
11/27/1984US4484935 Polydimethyl siloxane coating; for gas separation
11/21/1984EP0125908A2 Asymmetric polyimide reverse osmosis membrane, method for preparation of same and use thereof for organic liquid separations
11/21/1984EP0125907A1 Separation of dewaxing solvent from dewaxed oil in a lube oil dewaxing process using asymmetric polyimide membranes
11/20/1984US4483903 Dry-spun hollow polyacrylonitrile fibres and filaments and process for the production thereof
11/20/1984US4483901 Selectively gas-permeable composite membrane and process for production thereof
11/20/1984US4483694 Oxygen gas permselective membrane
11/13/1984US4482514 Process for the production of an ultrafiltration membrane from polyamide
11/13/1984US4482360 Porous materials for concentration and separation of hydrogen or helium, and process therewith for the separation of the gas
11/13/1984CA1178000A1 Process for making liquid composition, and product thereof
11/13/1984CA1177783A1 Fluorinated reinforced polymer membrane with sulfonyl and/or carboxyl groups
11/07/1984EP0124028A2 Heterogeneous membrane and process for production thereof
11/06/1984US4481260 Aromatic polysulfone type resin hollow fiber membrane and process for producing the same
11/06/1984CA1177596A1 Mixtures of glycidylated hydantoins and polyhydric phenols and the use thereof for the preparation of plastics
10/1984
10/31/1984EP0123647A1 Process for inhibiting the gelatinising of concentrated aqueous photoactivator solutions
10/17/1984EP0121911A2 Hollow fiber filter medium and process for preparing the same
10/16/1984US4477634 Modified acrylonitrile polymer containing semipermeable membranes
10/16/1984CA1176013A1 Hollow fiber of cuprammonium regenerated cellulose and process for producing the same
10/02/1984US4474858 Aromatic polyimide gas-separating membrane
10/02/1984US4474662 Evaporating thin film of polyamide and cyclizing
10/02/1984CA1175596A1 Hydrophilic polyurethane diacrylate composition
09/1984
09/27/1984WO1984003645A1 Microporous metal-plated polytetrafluoroethylene articles and method of manufacture
09/25/1984US4473476 Drying in nitrogen, vapor deposition of metal halide, then hydrolysis to oxide
09/25/1984US4473475 Charge modified microporous membrane, process for charge modifying said membrane, and process for filtration of fluids
09/25/1984US4473474 Cationic polymers
09/25/1984CA1174813A1 Blended, polymeric, matrix membrane and process of making and using same
09/18/1984CA1174794A1 Cross-linked hydrophilic polymers
09/18/1984CA1174408A1 Ultrafiltration membrane of polyamide and process for the preparation thereof
09/12/1984EP0117919A2 A membrane treatment method for semipermeable membranes
09/11/1984US4471110 Reverse osmosis
09/11/1984US4470831 Permselective membrane
08/1984
08/30/1984WO1984003228A1 Hollow fibers for use in dialysis and artificial kidney
08/28/1984US4468503 Amino ketone cross-linked polyphenylene oxide
08/28/1984US4468502 Cross-linked polyphenylene oxide
08/28/1984US4468501 Halogenated polyphenylene oxide crosslinked with ammonia
08/28/1984US4468500 Amino ketone cross-linked polyphenylene oxide
08/28/1984CA1173308A1 Method of producing a tubular filter element having high permeability
08/28/1984CA1173211A1 Film or hollow filament membrane of polycarbonate/polyether block copolymer
08/16/1984WO1984003055A1 Transfer of macromolecules from a chromatographic substrate to an immobilizing matrix
08/16/1984WO1984003054A1 Cross linked porous membranes
08/07/1984US4464498 Membrane for concentrating amino acids and process for concentrating amino acids
08/07/1984US4464321 Process for the preparation of chitosan fibers
08/01/1984EP0114286A2 Semi-permeable encapsulated membranes, process for their production and their use
07/1984
07/31/1984CA1171615A1 Dialysis membrane of cellulose
07/31/1984CA1171614A1 Modified polysulfones containing semipermeable membranes, process for their manufacture and their use
07/24/1984CA1171284A2 Hollow inorganic film forming material microspheres
07/18/1984EP0113574A2 Gas-selectively permeable membrane and method of forming said membrane
07/17/1984US4460526 Process for producing aromatic polyimide hollow filaments
07/10/1984US4459210 Porous membrane
07/04/1984EP0112724A1 Process for sulphonating polysulphones
07/04/1984EP0112631A2 Composite material, method of making it and its use in osmotic purification of liquids
07/04/1984EP0112614A2 Semipermeable membranes and method of making the same
07/03/1984US4457885 Process for the production of dry-spun hollow polyacrylonitrile fibers and filaments
07/03/1984CA1170255A1 Shaped material of chitin derivatives
07/03/1984CA1170010A1 Porous vinylidene fluoride polymer membrane and process for its preparation