Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 8141716 | Polysulfone and poly(N-vinyl lactam) polymer alloy and fiber and filter materials made of the alloy A polymer alloy has been developed comprising a polysulfone and a vinyl lactam polymer. The resulting alloy has excellent thermal characteristics and even in the presence of substantial quantities in vinyl lactam polymers, has solvent resistance to both organic and ... | 03/27/2012 |
| 8028842 | Chlorine resistant desalination membranes based on directly sulfonated poly(arylene ether sulfone) copolymers The present invention provides a membrane, kit, and method of making a hydrophilic-hydrophobic random copolymer membrane. The hydrophilic-hydrophobic random copolymer membrane includes a hydrophilic-hydrophobic random copolymer. The hydrophilic-hydrophobic random co... | 10/04/2011 |
| 7922007 | Separation membrane with selective permeability and process for producing the same The present invention relates to a permselective separation membrane that can be used in blood purifying treatment. More particularly, the present invention relates to a polysulfone-based permselective separation membrane which has well-balanced separation propertie... | 04/12/2011 |
| 7641055 | Polysulfone and poly(N-vinyl lactam) polymer alloy and fiber and filter materials made of the alloy A polymer alloy has been developed comprising a polysulfone and a vinyl lactam polymer. The resulting alloy has excellent thermal characteristics and even in the presence of substantial quantities in vinyl lactam polymers, has solvent resistance to both organic and ... | 01/05/2010 |
| 7441666 | Process for producing an asymmetric porous film It is intended to provide asymmetric porous films which are usable in blood dialysis, plasma separation, etc. and particularly excellent in the performance of selectively separating (fractionating) plasma protein, show little endogenous coagulation, complement or qu... | 10/28/2008 |
| 7442302 | Highly water-permeable blood purifier of hollow-fiber membrane type The present invention provides a highly water permeable hollow fiber membrane type blood purifier for medical use, which is excellent in safety and module-assembling ease and which has a high water permeability suitable for use in therapy of chronic renal failure. | 10/28/2008 |
| 7404896 | Modified membranes A porous polymeric membrane formed from a blend of a polymeric membrane forming material, such as polyvinylidene fluoride or polysulfone and a polymeric reactivity modifying agent adapted to modify the surface active properties of the porous polymeric membrane. The ... | 07/29/2008 |
| 7396465 | Positively charged membrane The present invention provides a positively charged microporous membrane having a protein binding capacity of about 25 mg/ml or greater comprising a hydrophilic porous substrate and a crosslinked coating that provides a fixed positive charge to the membrane. The pre... | 07/08/2008 |
| 7387732 | Organic-inorganic membranes The invention relates to organic/inorganic hybrid polymer blends and hybrid polymer blend membranes that are composed of: one polymer acid halide containing SO2X, POX2 or COX groups (X═, Cl, Br, I); one elemental or metallic oxide or hydroxid... | 06/17/2008 |
| 7364659 | Preparation of asymmetric polyethylene hollow fiber membrane A porous polyethylene hollow fiber membrane having a pore-size gradient across the inner and outer surfaces thereof is prepared by introducing, during the cooling step of a melt-spun polyethylene hollow fiber, a nitrogen flow and a solvent having a boiling point in ... | 04/29/2008 |
| 7361272 | Anisotropic porous material The present invention is to provide an anisotropic porous material for a fluid filter which can perform a separation process of a large amount of fluid with high accuracy, which can achieve high flux, and which can improve detergent properties. The anisotropic porou... | 04/22/2008 |
| 7354392 | Structurally optimized hollow fiber membranes An elongated hollow microporous fiber comprises an inner wall surface defining an interior fiber lumen, an outer wall surface, and a microporous fiber wall therebetween, the fiber wall having one or more continuous, cohesive, elongated filaments embedded in the fibe... | 04/08/2008 |
| 7347938 | Use of hydrophobically modified copolymers based on N-vinyl monomers for the production of membranes The present invention relates to the use of copolymers A containing a) from 50 to 99% by weight of at least one N-vinyllactam or N-vinylamine selected from the group consisting of N-vinylpyrrolidone, N-vinylpiperidone, N-vinylcapro... | 03/25/2008 |
| 7309428 | Apparatus for separating components from blood plasma The present invention relates to a process and apparatus for separating blood plasma, having a mixing unit in the form of a first injection having a first connecting tube and a first piston to provide a compartment for a mixture composed of plasma to be separated an... | 12/18/2007 |
| 7306754 | Membrane and the use thereof The invention relates to a membrane that consists of a polymer or a polymer mixture. The aim of the invention is to produce membranes, especially planar membranes or hollow fiber membranes that have an as high a separation efficiency as possible while simultaneously... | 12/11/2007 |
| 7303683 | Microorganism-removing filter medium having high isoelectric material and low melt index binder A filter medium capable of removing microorganisms from a fluid such as water. The filter medium includes particles of activated carbon, particles of a substantially insoluble inorganic material having an isoelectric point greater than the fluid being filtered. A lo... | 12/04/2007 |
| 7300022 | Modified membranes A porous polymeric membrane formed from a blend of a polymeric membrane forming material, such as polyvinylidene fluoride or polysulfone and a polymeric reactivity modifying agent adapted to modify the surface active properties of the porous polymeric membrane. The ... | 11/27/2007 |
| 7229580 | Preparation of porous poly(aryl ether) articles and use thereof The preparation and use of novel porous poly(aryl ether) articles is disclosed. The porous articles are prepared from blends of poly(aryl ether) polymers with polyimides by selectively decomposing the polyimide phase. The preferred reagents used to decompose the pol... | 06/12/2007 |
| 7226978 | Techniques to improve polyurethane membranes for implantable glucose sensors The invention provides an implantable membrane for regulating the transport of analytes therethrough that includes a matrix including a first polymer; and a second polymer dispersed throughout the matrix, wherein the second polymer forms a network of microdomains wh... | 06/05/2007 |
| 7223341 | Positively charged membrane The present invention provides a positively charged microporous membrane having a protein binding capacity of about 25 mg/ml or greater comprising a hydrophilic porous substrate and a crosslinked coating that provides a fixed positive charge to the membrane. The pre... | 05/29/2007 |
| 7214319 | Method of separating protein from animal milk The present invention refers to a method of separating casein from animal milk, especially, after defatting the animal milk as the pretreatment, the processing of the defatted milk aforesaid through a ceramic filtration membrane to remove the casein in the milk. The... | 05/08/2007 |
| 7208200 | Process of forming multilayered structures The present invention provides for a method of producing an integral multilayered porous membrane by simultaneously co-casting a plurality of polymer solutions onto a support to form a multilayered liquid sheet and immersing the sheet into a liquid coagulation bath ... | 04/24/2007 |
| 7195711 | Specialized hollow fiber membranes for in-vivo plasmapheresis and ultrafiltration An in-vivo plasmapheresis and/or in-vivo ultrafiltration membrane comprises elongated hollow fibers each fiber having an interior lumen extending along the fiber length, the fiber wall having a plurality of zones between the inner and outer wall surfaces, each of th... | 03/27/2007 |
| 7189322 | Charged membrane The present invention provides a hydrophilic charged microporous membrane comprising a porous hydrophobic substrate and a coating comprising a charge-providing agent. The present invention further provides a hydrophilic charged membrane comprising a porous hydrophob... | 03/13/2007 |
| 7160927 | Sulfonated aryl sulfonate matrices and method of production Porous matrices and membrane matrices comprising sulfonated aryl sulfonate polymers are prepared from a sulfonated aryl sulfonate polymer solution which is made by dissolving an aryl sulfonate polymer, and optionally a polymer other than aryl sulfonate, in a sulfona... | 01/09/2007 |
| 7144505 | Melt-spun polysulfone semipermeable membranes and methods for making the same The present invention provides, inter alia, a composition useful for producing a homogeneous, semipermeable membrane, the composition comprising a polysulfone semipermeable membrane, the polysulfone semipermeable membrane comprising a mixture of: an ultra-high-molec... | 12/05/2006 |
| 7138058 | Acid stable membranes for nanofiltration Semi-permeable membranes are described that allow for the efficient processing of many liquid based feed solutions, particularly those that contain acids. The membranes of this invention are able to process such feeds with high permeate rates while maintaining excel... | 11/21/2006 |
| 7108791 | High-resolution virus removal methodology and filtration capsule useful therefor The present invention provides a high-resolution membrane-based method for removing a virus from a manufactured protein-containing solution, the method being particularly characterized by its capacity to be performed quickly (i.e., as measured by flux) and efficient... | 09/19/2006 |
| 7094349 | Organic porous article having selective adsorption ability for boron, and boron removing module and ultra-pure water production apparatus using the same An organic porous material having selective adsorption ability for boron, characterized in that it has an open cell structure comprising macro pores jointed to one another and, formed within the wall of the macro pore, meso pores having a pore diameter of 0.02 to 20... | 08/22/2006 |
| 7087168 | Hollow fiber membrane for purifying blood It is intended to provide a blood purification membrane having excellent performance and showing little elution of blood and little adhesion of blood proteins or platelets. The above object can be achieved by using a moisten membrane, which is free from any membrane... | 08/08/2006 |
| 7083729 | Device and method for cleaning a fluid, such as water A device for cleaning a fluid comprises at least one set of a first membrane cloth and a second membrane cloth, each being permeable to water over substantially their entire length. The membrane cloths are held taut, substantially parallel to one another in a frame ... | 08/01/2006 |
| 7071130 | Laminated material of segregating membrane and segregating membrane supporting material, and its method of manufacture Segregating membrane supporting material is a three-dimensional assembly of fibers thermo-compressed into non-woven fabric, and the non-woven fabric fibers are joined together in sheet form. This segregating membrane supporting material is non-woven fabric, includin... | 07/04/2006 |
| 7070721 | Method of making and using a hollow fiber microfiltration membrane A hollow fiber microfiltration (MF) membrane is provided. The casting solution used to make this membrane includes a fiber-forming polymer having a degree of polymerization greater than about 1000, a water-soluble polymer, an anhydride with about 2 to 12 carbon atom... | 07/04/2006 |
| 7067058 | Hydrophilic membrane and process for making the same A process for imparting hydrophilic properties to a polymeric membrane by exposing the membrane to an acrylate monomer containing hydrophilic segments, such as ethylene oxide, and a hydrophilic functional group, a diacrylate monomer containing hydrophilic functional... | 06/27/2006 |
| 7063775 | Biosensor and method for manufacturing the same A biosensor (I) which comprises a capillary (3) having a passage (30) fined with an inlet (30a) for taking a sample solution therein, a membrane (8) for accelerating the transference of a sample solution in the passage (30),... | 06/20/2006 |
| 7001518 | Low pressure reverse osmosis and nanofiltration membranes and method for the production thereof Novel low pressure reverse osmosis and nanofiltration membranes and a process for their preparation are disclosed. Polyamide reverse osmosis membranes are contacted with organic sulfonic acid solutions without the need for additional treatment by a rejection enhanci... | 02/21/2006 |
| 6994789 | Pre-metered, unsupported multilayer microporous membrane An at least two layer, unsupported, continuous microporous membrane is disclosed. The at least two layer, unsupported, continuous microporous membrane may include at least two different membrane pore size layers or the pore sizes may have about the same pore size. A... | 02/07/2006 |
| 6994788 | Sulfonated aromatic polymers, membrane containing said polymers and a method for production and use of the same A sulfonated aromatic polymer comprising the repeating structural unit of the formula I —O—Ar1(SO3R)n—C(CF3)2—Ar1(SO3R)n—O—Ar2—(X—Ar2 | 02/07/2006 |
| 6986429 | Anti-microbial porous component formed of a polymer material grafted with ammonium units The invention concerns an anti-microbial porous part based on a polymeric material grafted at the surface and in its volume with ammonium motifs with anti-microbial and/or bactericidal and/or fungicide activity, preferably benzalkonium. The invention is characterize... | 01/17/2006 |
| 6960297 | Dialyzers for blood treatment and processes for production thereof A dialyzer for blood treatment including a semipermeable membrane which is made of a hydrophobic polymer and a hydrophilic polymer, and has a water permeating performance drying of ½ or higher relative to that before drying. The dialyzer has a vitamin B12 clearance... | 11/01/2005 |
