Patents
Patents for B01D 71 - Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor (23,060)
01/1988
01/12/1988US4718921 Method for removing water vapor from water vapor-containing gas
01/12/1988CA1231210A1 Process for the preparation of porous bodies
01/07/1988EP0251511A1 Bipolar membranes and method of making same
01/07/1988EP0251495A1 Filter units having welded cellulose filters
01/07/1988EP0251376A2 Asymmetrical membrane of polyesteramide and process for preparing it
01/05/1988US4717455 Process for manufacturing a microfilter
01/05/1988US4717425 Removal of ions from molasses
01/05/1988US4717395 Gas separations using membranes comprising sulphonated polyether sulphone
01/05/1988US4717394 Polyimide gas separation membranes
01/05/1988US4717393 Photochemically crosslinked aromatic polyimides
12/1987
12/30/1987WO1987007849A1 Polyamide membranes
12/29/1987US4715960 Method for the modification of polycarbonate membranes, the membranes produced by such method and their use
12/23/1987EP0250346A1 Process for the production of a porous mineral membrane on an inorganic support
12/23/1987EP0250337A1 Semi-permeable hydrophilic polyvinylidene fluoride membranes suited for drying
12/22/1987US4714725 Suflonated polyaryletherketones
12/22/1987US4714482 Organic polymer blend with inorganic acid such as sulfuric, phosphoric or heteropoly acid
12/22/1987US4714481 Gas separation membrane
12/17/1987WO1987007624A1 Bipolar membranes and methods of making same
12/17/1987WO1987007623A1 Electrodialysis membranes comprising sulfonated constituents
12/17/1987WO1987007618A1 Acid decrystallization of aminopolysaccharides and derivatives thereof
12/16/1987EP0249513A2 Hydrophilic porous membrane, method for production thereof, and plasma separator using said membrane
12/16/1987EP0249189A2 Membrane for hemodialysis
12/16/1987CN87104069A Bipolar membranes and methods of making same
12/16/1987CN87103123A Tetrabromo bisphenol based polyestercarbonate membranes and method of using
12/16/1987CN87102812A Gas separations using membranes comprising perfluorinated polymers with pendant lonomeric moieties
12/09/1987EP0248748A1 Processes for manufacturing mineral membranes and powder of mixed oxides of titanium and silicon
12/09/1987EP0248599A2 Dynamic membranes
12/09/1987EP0248392A2 Use of a porous inorganic siliceous-containing gas enriching material
12/09/1987EP0248391A2 Porous siliceous-containing gas enriching material and process of manufacture and use
12/08/1987US4711907 Membranes of substantially non-crosslinked organic polymers which contain bonded ionogenic groups
12/08/1987US4711793 Process for charge modifying a microphorous membrane
12/08/1987US4711719 Process for the production of crack-free semi-permeable inorganic membranes
12/02/1987EP0247596A2 Porous membrane
12/02/1987EP0247358A2 Copolymeric and amphiphilic and polyimide precursor, process for preparing the same and thin film
12/01/1987US4710331 Compression molding, heating, slicing, cooling slowly and stretching; high-strength; uniformity
12/01/1987US4710278 Of an organic polymer and heteropoly acid or salt mixtures
12/01/1987US4710204 Acid gases from non-acid gases
12/01/1987EP0138841A4 Transfer of macromolecules from a chromatographic substrate to an immobilizing matrix.
11/1987
11/24/1987US4708981 Interpenetrating polymer network
11/24/1987US4708803 Liquid filtration using hydrophilic cationic isotropic microporous nylon membrane
11/24/1987US4708800 Polypropylene; artificial lung
11/24/1987US4708799 Hollow fiber membrane for plasma separation
11/24/1987CA1229530A1 Method of fabrication for microfiltration, ultrafiltration or reverse osmosis elements
11/19/1987EP0245863A2 Composite ultrafiltration membranes
11/19/1987EP0245857A1 Amphiphilic segment polyurethanes
11/19/1987EP0245516A1 Polymer membrane for separating liquid mixture
11/19/1987DE3714784A1 Verfahren zum konzentrieren von alkoholwasserloesungen mittels pervaporation A method of focusing of soft water by pervaporation loesungen
11/19/1987DE3712391A1 Separating an emulsified liquid phase by a surface-modified porous membrane
11/18/1987CN87102750A Semi-permeable membranes comprising predominantly polycarbonates derived from tetrahalobisphenols
11/17/1987US4707266 Polyamide membrane with controlled surface properties
11/17/1987US4707265 Reinforced microporous membrane
11/11/1987EP0245000A2 Microporous membrane structure and method of making
11/11/1987EP0244635A2 Process for enhancing the selectivity of asymmetric membranes
11/10/1987US4705753 Biologically active acrylonitrile-based copolymeric membrane
11/10/1987US4705636 Method of making a coating and a permselective membrane, ionic polymer therefor, and products thereof
11/10/1987US4705632 Hollow fiber membrane formed from a block copolymer of aromatic polyester and polyoxyethylene for dialysis of blood
11/10/1987US4705545 Thin film polymer blend membranes
11/10/1987US4705540 Polyimide gas separation membranes
11/04/1987EP0244126A2 Tetrabromo bisphenol based polyestercarbonate membranes and method of using
11/04/1987EP0243876A2 Preparation of semi-permeable composite membranes
11/03/1987US4704324 Reverse osmosis, gas separation, ultrafiltration
10/1987
10/28/1987EP0242878A1 Composite membrane
10/28/1987EP0242877A1 Extractant-surfactant posttreatments of permselective composite membranes
10/28/1987CN87102849A Composite membrahes
10/27/1987US4702840 Charge modified polyamide membrane
10/27/1987US4702836 Porous fluorine resin membrane and process for preparing the same
10/27/1987US4702834 Plastic filter units having a weld cellulose filter
10/21/1987EP0242208A1 Composite membrane
10/21/1987EP0242204A1 Anodic aluminium oxide membranes
10/21/1987EP0242147A2 The use of polycarbonate containing semipermeable membranes in the separation of gases.
10/21/1987EP0242069A2 Semipermeable composite membranes produced from silicone water based emulsions applied to porous substrates
10/21/1987EP0241937A2 Polyimide gas separation membranes
10/20/1987US4701186 Polymeric membranes with ammonium salts
10/20/1987CA1228302A1 Process for separating alkylaromatics from aromatic solvents and the separation of the alkylaromatic isomers using membranes
10/15/1987DE3712491A1 Microfiltration membrane, process for the production thereof and use thereof
10/14/1987EP0240803A2 Process for the separation of the components of a liquid-mixture
10/14/1987EP0240586A1 Post-cross-linked polymeric gels
10/13/1987US4699892 Aluminum or gallium, silicon or germanium oxides on porous support; separation or catalytic action
10/13/1987US4699637 Hydrogen permeation membrane
10/13/1987CA1228041A1 Process for the dissolution of peptides and proteins, solutions thereby obtained and their use
10/13/1987CA1228032A1 Process for removing pyrogens utilizing a hydrophobic microporous membrane
10/13/1987CA1227975A1 Semipermeable encapsulated membranes, process for their manufacture and their use
10/07/1987EP0239888A2 Gas separations using membranes comprising perfluorinated polymers with pendant ionomeric moieties
10/06/1987US4698157 Filter membrane and method of manufacturing it
09/1987
09/29/1987US4696748 Plasma separator and a process for preparing the same
09/29/1987US4696686 Oxygen separating member and process for producing the same
09/23/1987EP0238276A2 Novel membranes and process for making them
09/23/1987EP0238087A2 Process for producing a dynamic filter membrane
09/23/1987EP0237865A2 Process for producing a microfiltration, ultrafiltration or reverse osmosis element
09/23/1987EP0237581A1 Poly(di-substituted acetylene)/polyorganosiloxane graft copolymer and gas separation membrane
09/22/1987US4695483 Method for the preparation of composite membranes based on interpenetrating polymer networks
09/22/1987US4695383 Copolyamide from a diaminodiphenyl sulfone
09/22/1987US4695295 Gas separation membranes from polymers containing a hydrocarbon backbone and pendant (hydrocarbylamido)alkyl ester moieties
09/16/1987EP0237251A2 Membrane
09/15/1987US4694077 Novel cellulose derivative, process for preparing the same and sulfur dioxide gas permselective membrane comprising the same
09/15/1987US4693825 Adding benzyl alcohol to casting dope; unannealed membranes for reverse osmosis
09/15/1987US4693824 Dissolving in a solvent, forming on a support, desolventizing and coagulation
09/15/1987CA1226708A1 Filtration membrane and process for producing the membrane
09/09/1987EP0236249A1 Porous fritted ceramic work pieces and process for their production
09/08/1987US4692354 Impregnation pores of ceramic with alumina sol and sodium silicate, then high temperature water vapor treatment