Patents
Sitemap › B01 - Physical or chemical processes or apparatus in general › B01D - Separation › B01D 71 - Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
Patents for B01D 71 - Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor (23,060)
12/1991
12/31/1991US5076926 Reducing pore size; impregnation, concentration, precipitation ; catalysts supports
12/31/1991US5076817 Aromatic polyamides; selective
12/31/1991US5076816 Polyimide containing 2-methyl-3,5-diaminobenzoic acid units
12/31/1991CA2045966A1 Oxygen-permeable polymeric membranes
12/30/1991WO1992000132A1 Process and apparatus for removal of dna and viruses
12/30/1991CA2084873A1 Process and apparatus for removal of dna and viruses
12/29/1991WO1992000137A1 Narrow pore-size distribution polytetramethylene adipamide or nylon 46 membranes and process for making them
12/27/1991EP0237581B1 Poly(di-substituted acetylene)/polyorganosiloxane graft copolymer and gas separation membrane
12/26/1991CA2045186A1 Blood compatible composite material
12/24/1991US5075006 Isocyanurate crosslinked polyurethane membranes and their use for the separation of aromatics from non-aromatics
12/24/1991US5074891 Using aromatic fluorine-containing polyimide
12/18/1991EP0461853A2 Residential furnaces, air-intake system therefor, and method of operating them
12/18/1991EP0461852A2 Mobile engines, air-intake system therefor, and method of operating them
12/18/1991EP0461607A2 Membrane for separating an organic solvent from a water-organic solvent mixture
12/17/1991US5073176 Dicarboxylic acid polyesters and polyamides for fluid separation membranes
12/17/1991US5073175 Fluorooxidized polymeric membranes for gas separation and process for preparing them
12/14/1991CA2044396A1 Air-intake system for residential furnaces
12/14/1991CA2044395A1 Air-intake system for mobile engines
12/12/1991WO1991018666A1 Semipermeable composite membrane
12/12/1991WO1991018664A1 Polyethersulfone/phenoxy resin blend filtration membranes
12/11/1991EP0460770A1 Process for the separation of components in an organic liquid medium and a semi-permeable composite membrane therefor
12/11/1991EP0460769A1 Semi-permeable composite membrane and process for manufacturing same
12/11/1991EP0460512A1 Membrane formed of crystalline molecular sieve material
12/11/1991EP0460196A1 Treatment of impurity-containing liquid streams in ethylene oxide/glycol processes with semi-permeable membranes.
12/10/1991US5071997 Polyimides comprising substituted benzidines
12/10/1991US5071880 Irradiated graft polymerization of epoxy-containing monomer on polyolefin or halogenated olefin substrate; modified with iminodiacetic acid; water treatment
12/10/1991US5071554 Polyolefin
12/10/1991US5071457 Composite for filtering hot gas and method of its manufacture
12/10/1991US5071452 Polyimide containing tetracarboxylic benzydrol acid
12/10/1991US5071448 Polyether copolymers based on a bisphenol sulfone and an aromatic dihydroxy compound; improved permeability; gas or fluid separation
12/04/1991EP0459623A1 Asymmetric hollow filamentary carbon membrane and process for producing same
12/04/1991EP0459293A2 Polysaccharide ether dialysis membrane
12/03/1991US5069794 Semipermeability
12/03/1991CA1292647C Polytetrafluoroethylene coating of polymer surfaces
11/1991
11/28/1991DE4016328A1 Polymer composites for sepn. and carrier materials e.g. in dialysis - contains high polymer component consisting of more than 50 per cent cellulose, and sulphonate and/or sulphate contg. polymers
11/27/1991EP0448647A4 Heat resistant microporous material production and products
11/27/1991CN1056441A Process for dehydration of gases and composite permeable membranes therefor
11/26/1991US5068269 Dialysis membranes
11/26/1991US5067971 Process for dehydration of gases and composite permeable membranes therefor
11/26/1991US5067970 Asymmetric polyimide membranes
11/22/1991WO1991018023A1 Processes for synthesizing cyclodextrin polymer and producing cyclodextrin film
11/22/1991CA2063453A1 Method of synthesizing cyclodextrin polymers and process for producing cyclodextrin membranes
11/21/1991EP0456939A1 Hydrophilic porous fluoropolymer membrane
11/21/1991EP0456765A1 Porous substrates with a high concentration of amine groups
11/19/1991US5066403 Polytetrafluoroethylene bonded to perflurosulfonic acid polymer
11/19/1991US5066401 Immobilizing biochemical material
11/19/1991US5066398 Porous Layer Of Inorganic Material And A Separating Layer Of Polyphosphazene
11/14/1991WO1991017204A1 Polyvinylidene fluoride membrane
11/13/1991EP0456143A2 Asymmetric polyimide mebranes
11/13/1991EP0455645A1 Irradiated expanded polytetrafluoroethylen composites, and devices using them, and processes for making them.
11/12/1991US5064593 Process for producing multilayer polytetrafluoroethylene porous membrane
11/12/1991US5064580 Process for making microporous membranes from poly(etheretherketone)-type polymers
11/11/1991WO1991016968A1 Membrane for isolating virus from solution
11/06/1991EP0455216A1 Membranes formed from rigid polyarylates
11/05/1991US5063186 Highly aromatic polyurea/urethane membranes and their use of the separation of aromatics from non-aromatics
11/04/1991CA2041288A1 Membranes formed from rigid polyarylates
11/01/1991CA2015856A1 Multi stage pervaporation process run at progressively higher vacuum, higher temperature or both at each successive retentate stage
10/1991
10/29/1991US5061809 9,9-bis-(3,4-dicarboxyphenyl)fluorene dianhydrides
10/29/1991US5061767 Homopolymers from concentrated emulsions of hydrophilic and hydrophobic monomers
10/29/1991US5061544 Differentiation in pore size; dimensional stability upon heat treatment; used as separation membrane
10/29/1991US5061301 Process for the preparation of surface modified, multilayered, composite membranes for oxygen enrichment and the gas separation membranes
10/29/1991US5061298 Gas separating membranes formed from blends of polyimide polymers
10/22/1991US5059659 Surface treatments to impart hydrophilicity
10/22/1991US5059366 Method of making a membrane filter
10/22/1991US5059327 Polyvinyl alcohol-polystyrenesulfonic acid reaction product on porous support
10/22/1991US5059220 Composite polymeric membranes for the separation of mixtures of gases and the method of preparation the same
10/21/1991WO1991016123A1 Porous polybenzoxazole and polybenzothiazole membranes
10/21/1991WO1991016121A1 Polybenzazole polymers containing indan moieties
10/21/1991CA2080122A1 Polybenzazole polymers containing indan moieties
10/21/1991CA2079909A1 Porous polybenzoxazole and polybenzothiazole membranes
10/16/1991EP0451847A1 Membranes formed from aromatic polyarylates
10/16/1991EP0451755A1 Composite inorganic porous semipermeable membrane and process for its preparation
10/16/1991EP0451353A1 Polypiperazinamide-based reverse-osmosis membranes and post-treatment process for their preparation
10/15/1991US5057586 Halogenated 1,3-dioxolanes and derivatives
10/15/1991US5057218 Porous membrane and production process thereof
10/09/1991EP0450894A1 Porous PTFE structures
10/09/1991CN1055205A Solid multi-component membranes, electrochemical reactor components reactor for oxidation reactions
10/08/1991US5055632 Highly aromatic polyurea/urethane membranes and their use for the separation of aromatics from non-aromatics
10/08/1991US5055631 Sulfonated polysulfone membranes for aromatics/saturates separation
10/08/1991US5055570 Cuprammonium-stable cellulose esters and carbamates for dialysis membranes
10/08/1991US5055116 Gas separation membranes comprising miscible blends of polyimide polymers
10/08/1991US5055114 Gas separation
10/08/1991CA1290257C Osmotic concentration by membrane
10/04/1991WO1991015285A1 Gas separation membranes comprising miscible blends of polyimide polymers
10/04/1991CA2079798A1 Gas separation membranes comprising miscible blends of polyimide polymers
10/03/1991WO1991014499A1 Composite membrane
10/02/1991EP0449139A2 Membranes formed from rigid aromatic polyamines
10/02/1991EP0449054A1 Hollow polyacrylonitrile fibres
10/02/1991EP0448647A1 Heat resistant microporous material production and products.
10/01/1991US5053451 Gels was formed with di- and tri-valent cations aqueous media
10/01/1991US5053059 Air-intake system for residential furnaces
10/01/1991CA2039419A1 Pervaporation process for separating a lower alcohol compound from a mixture of a lower alcohol compound and an ether compound
10/01/1991CA2038647A1 Membranes formed from rigid aromatic polyamines
09/1991
09/29/1991CA2038964A1 Polyacrylonitrile hollow threads
09/25/1991EP0447971A2 Gas separation material
09/25/1991EP0447486A1 Defect-free ultrahigh flux asymmetric membranes.
09/25/1991EP0447447A1 Fabric reinforced composite membrane
09/25/1991EP0217831B1 Reversed phase membranes
09/24/1991US5051183 Microporous polyolefin membrane and method of producing same
09/24/1991US5051178 Process of producing composite semipermeable membrane
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