Filter, Sponge, Or Foam Patents (Class 427/244)
-
Publication number: 20100267304Abstract: Disclosed are polyurethane foam pads and methods of making and using same. Also disclosed are processes for making the foam pads, and methods of using the foam pads.Type: ApplicationFiled: November 16, 2009Publication date: October 21, 2010Inventor: Gregory Fowler
-
Patent number: 7807221Abstract: An object of the present invention is to provide a composite porous membrane, which has not only excellent filtration capacity, but also excellent adhesion between a porous membrane and a braid and mechanical properties, and a method for producing the composite porous membrane. The present invention relates to a composite porous membrane comprising a braid, and a membrane material; wherein the membrane material comprises a first porous layer comprising a dense layer which is arranged on the outer surface of the braid, and a second porous layer comprising a dense layer which is arranged on the first porous layer, and a method for producing the composite porous membrane.Type: GrantFiled: June 21, 2007Date of Patent: October 5, 2010Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Katsuhiko Shinada, Kei Murase, Teruyuki Yamada, Yuuichi Shirasu, Masahiko Mizuta, Hiroyuki Fujiki
-
Patent number: 7806275Abstract: A chlorine resistant polyamide is formed from the reaction product of an amine and an acid chloride monomer wherein the acid chloride monomer is modified with electron-withdrawing groups that exhibit sufficient activity to (i) minimize any chlorination on both the amine and acid chloride side and (ii) minimize N-chlorination. A membrane is made from the polyamide and, in one application, the membrane is used in a desalination unit.Type: GrantFiled: May 9, 2007Date of Patent: October 5, 2010Assignees: The United States of America as represented by the Secretary of the Interior, The Bureau of Reclamation, Colorado Seminary, Separation Systems Technology Inc.Inventors: Andrew Patrick Murphy, Balasingam Murugaverl, Robert Lee Riley
-
Publication number: 20100230359Abstract: The invention is directed generally to a porous and durable ceramic filter monolith coated with one or more rare earth-containing compositions for removing contaminants from a fluid, particularly for removing one or more contaminants from water.Type: ApplicationFiled: March 16, 2010Publication date: September 16, 2010Applicant: MOLYCORP MINERALS, LLCInventors: Charles F. Whitehead, Timothy L. Oriard
-
Patent number: 7744736Abstract: A method of manufacturing a reference electrode which has a shaft into which a diaphragm body of a porous ceramic is incorporated is comprised of the following method steps: Impregnating the ceramic with a lyogel precursor prior to incorporating the ceramic body into the shaft, and subsequently transforming the lyogel precursor into a lyogel, from which the solvent is removed through a drying process. A reference electrode has a shaft that is filled with electrolyte, and a diaphragm body formed of a porous ceramic and containing a system of hollow spaces is incorporated into the wall of the shaft. The system of hollow spaces is filled at least partially with a material that is formed of a lyogel by drying and has at least one component that corresponds to the ceramic material.Type: GrantFiled: December 12, 2005Date of Patent: June 29, 2010Assignee: Mettler-Toledo AGInventor: Sascha Murer
-
Patent number: 7727587Abstract: A composite product is formed from a honeycomb panel having an array of hexagonal tubular cells which clamped between two press plates where a layer of a foaming agent is applied to only the bottom press plate such that the foaming agent expands into the cells. An array of grooves is provided in the top press plate and connected at one or both edges of the plate to a source of vacuum so as to draw air through the grooves and cells. A sheet of a polyethylene material having the characteristics that it is permeable to air, substantially impermeable to liquid and resistant to bonding to the foam is applied onto the press plate to prevent the foam entering the grooves and bonding to the press plate while allowing the air to be drawn from the cells.Type: GrantFiled: December 19, 2007Date of Patent: June 1, 2010Inventor: Edward Kaspersion
-
Patent number: 7727434Abstract: Membranes as well as a methods of treating membranes are disclosed. The method of treating a membrane includes contacting the membrane with a first solvent, contacting the membrane with an inert solvent, and contacting the membrane with an amine reactive compound. The first solvent includes a solvent having a Hansen solubility parameter in a range from about 10.0 to about 18. The membrane includes a polymer having an amine group.Type: GrantFiled: August 16, 2005Date of Patent: June 1, 2010Assignee: General Electric CompanyInventors: Sergei Kniajanski, Gary William Yeager, Christopher James Kurth, Isaac Keene Iverson, Steven Duwayne Kloos, Leonard Timbrook Hodgins
-
Patent number: 7700163Abstract: A method for base-coating a porous ceramic catalyst support includes coating the support with a passivation coating via vacuum infiltration, and subsequently exposing the support to a microwave field to dry the coating and form a polymerized film. The method further includes coating the support with a catalyst coating or washcoat, and subsequently exposing the support to a second microwave field, thereby removing water from the catalyst coating or washcoat.Type: GrantFiled: October 27, 2005Date of Patent: April 20, 2010Assignee: Corning IncorporatedInventors: Roychelle Sheneen Ingram-Ogunwumi, Steven Bolaji Ogunwumi, Barbara Anna Oyer, Paul John Shustack
-
Publication number: 20100092358Abstract: A diesel particulate filter with an oxidation catalyst comprising platinum and palladium deposited thereon is described. Addition of HC storage components to the oxidation catalyst allows the conversion of hydrocarbons and carbon monoxide to be improved significantly.Type: ApplicationFiled: August 17, 2007Publication date: April 15, 2010Applicant: UMICORE AG & CO.KGInventors: Markus Koegel, Marcus Pfeifer, Gerald Jeske, Frank Walter Schuetze, Stéphanie Frantz, Thomas Kreuzer
-
Publication number: 20100077837Abstract: A porous thin film and a method are disclosed. The film has a generally uniform thickness and includes fused silica particles that provide multiple types of pores in the film. Particles are generally uniformly distributed on a surface and have a generally open structure that provides the film with an open interface readily accessible to fluids. The film provides for preconcentration of, e.g., heavy metals in fluid and gas samples that provides for direct determination of the analytes.Type: ApplicationFiled: October 1, 2008Publication date: April 1, 2010Inventors: Glen E. Fryxell, Xiaohong Li, Raymond S. Addleman, Richard Skaggs
-
Publication number: 20100065498Abstract: The present invention provides porous media or membranes having a surface coating that includes a cross-linked terpolymer which has a superior combination of properties, including heat stable biomolecule resistant adsorptive properties, resistance to strong alkaline solutions, and low levels of extractable matter. In some preferred embodiments, the porous media is a porous membrane.Type: ApplicationFiled: October 15, 2009Publication date: March 18, 2010Applicant: MILLIPORE CORPORATIONInventors: John Charkoudian, Neil P. Soice
-
Patent number: 7677398Abstract: The invention provides a process for improving the antifouling properties and for increasing the selectivity of commercial composite polyamide nanofiltration (NF) and reverse osmosis (RO) membranes comprising circulating a low concentration of water soluble monomers and an initiating redox couple in an aqueous solvent, without transverse pressure over the surface of the membrane thereby effecting a free-radical graft polymerization on the surface of the membrane.Type: GrantFiled: September 4, 2005Date of Patent: March 16, 2010Assignee: Ben Gurion University of the Negev Research and Development AuthorityInventors: Sophia Belfer, Rosalia Fainstein, Luba Kesselman, Charles Linder
-
Patent number: 7677399Abstract: A process for manufacturing a separation membrane with excellent productivity, which can uniformly dry and imidize a separation membrane precursor solution formed on an inner surface of through-holes of a monolith substrate and which does not require complicated operations such as placement of a monolith substrate in a dryer, and the separation membrane manufactured by the process are provided. The separation membrane is manufactured comprising: causing a separation membrane precursor solution to pass through through-holes in a porous monolith substrate, to form a membrane of the precursor solution on the surface of the through-holes, and drying the membrane by causing hot wind to pass through the through-holes.Type: GrantFiled: October 4, 2007Date of Patent: March 16, 2010Assignee: NGK Insulators, Ltd.Inventors: Shogo Takeno, Akimasa Ichikawa
-
Patent number: 7678419Abstract: A method of forming a catalytic region on a porous structure having an exterior surface and a plurality of pores, the method comprising: forming a supercritical dispersion, wherein the supercritical dispersion comprises a plurality of particles dispersed in a supercritical fluid; exposing the porous structure to the supercritical dispersion; and depositing the plurality of particles from the supercritical dispersion onto the porous structure, wherein each one of the deposited plurality of particles is catalytic, thereby forming one or more catalytic regions on the porous structure. The method is particularly well suited for creating catalytic regions within pre-formed microporous structures.Type: GrantFiled: May 8, 2008Date of Patent: March 16, 2010Assignee: SDC Materials, Inc.Inventors: Rob Kevwitch, Maximilian A. Biberger
-
Publication number: 20100059433Abstract: The present invention describes methods and compositions for the reduction, prevention and elimination of biofilm formation on a surface. The present invention provides a method of depositing a coating material to reduce or prevent biofilm formation on a surface by adding a dopamine coating material to a liquid solvent to form a solution mixture, adjusting a pH of the solution mixture to 8, 9, or 10 and dissolving the dopamine coating material in the liquid solvent. The solution mixture is then placed into contact with one or more surfaces to form a dopamine coating on the surface to reduce biofilm formation.Type: ApplicationFiled: July 9, 2009Publication date: March 11, 2010Applicant: Board of Regents, The University of Texas SystemInventors: Benny D. Freeman, Ho Bum Park, Bryan D. McCloskey, Daniel J. Miller
-
Publication number: 20100051538Abstract: The present invention includes methods and compositions for liquid separation and water purification. The present invention includes a purification membrane having a polymer matrix purification membrane that has been treated with dopamine to form a polydopamine coated membrane with a high water flux and a high hydrophilicity.Type: ApplicationFiled: July 9, 2009Publication date: March 4, 2010Applicant: Board of Regents, The University of Texas SystemInventors: Benny D. Freeman, Ho Bum Park, Bryan D. McCloskey
-
Patent number: 7665615Abstract: A composite article includes a base material and a porous membrane laminated with the base material. The porous membrane has hydrophobic properties and includes at least one of expanded polytetrafluoroethylene, woven polytetrafluoroethylene, and non woven polytetrafluoroethylene. A coating layer is formed on at least a portion of the porous membrane. The coating layer has hydrophilic properties and includes at least one of an organofunctional siloxane and a polyether urethane polymer.Type: GrantFiled: September 30, 2005Date of Patent: February 23, 2010Assignee: General Electric CompanyInventors: Karmin Lorraine Olson, Alan Smithies
-
Patent number: 7662212Abstract: The invention relates to polymeric ultrafiltration or microfiltration membranes of, for instance, Halar, PVDF or PP, incorporating PVME or vinyl methyl ether monomers. The PVME may be present as a coating on the membrane or dispersed throughout the membrane or both. The membranes are preferably hydrophilic with a highly asymmetric structure with a reduced pore size and/or absence of macrovoids as a result of the addition of PVME. The PVME maybe cross-linked. The invention also relates to methods of hydrophilising membranes and/or preparing hydrophilic membranes via thermal or diffusion induced phase separation processed.Type: GrantFiled: July 8, 2004Date of Patent: February 16, 2010Assignee: Siemens Water Technologies Corp.Inventors: Daniel Mullette, Joachim Muller, Neeta Patel
-
Publication number: 20100031619Abstract: A method of improving filtration efficiency of a fibrous nonwoven filter media comprises providing a filter media and incorporating in the filter media one or more additives selected from the group consisting of silicone additives, wax additives, and mixtures thereof. The filter media comprises glass fibers, polymer fibers, and optionally binder. Inclusion of silicone and/or wax additive(s) in a filter media has surprisingly been found to increase filtration efficiency, for example, by 10-15%.Type: ApplicationFiled: August 7, 2008Publication date: February 11, 2010Inventors: Dale Addison Grove, III, Alan Michael Jaffee, Richard Thomas Giovannoni
-
Publication number: 20100025330Abstract: Membranes for filtration by size exclusion are formed from open-ended nanotubes embedded in a polymeric matrix. The matrix forms a layer whose thickness is substantially less than the average length of the nanotubes, allowing the nanotubes to be randomly oriented throughout the matrix while providing channels extending through the layer for the selective passage of molecular species or particles based on size.Type: ApplicationFiled: June 25, 2009Publication date: February 4, 2010Applicant: NanOasisInventors: Timothy V. Ratto, Jason K. Holt, Alan W. Szmodis
-
Publication number: 20100000937Abstract: A fluorine resin polymer separation membrane and a manufacturing method of the same, which are excellent in a virus-eliminating property, further excellent in water permeability, chemical strength (chemical resistance), physical strength, and an antifouling property, and particularly suitable for practicable use as a filtration membrane for the elimination of viruses, are provided. A fluorine resin polymer separation membrane includes a layer having a three-dimensional network structure and a layer having a spherical structure, in which the layer having a three-dimensional network structure does not substantially contain micro-voids having a void diameter of 5 ?m or more, and the fluorine resin polymer separation membrane has filtration performance represented by the elimination rate of 80% or more of dextran having molecular weight of 75,000. The layer having a three-dimensional network structure is formed by the solidification with a polymer solution containing a fluorine resin polymer and cellulose ester.Type: ApplicationFiled: July 25, 2006Publication date: January 7, 2010Applicant: Toray Industries, Inc.Inventors: Masayuki Hanakawa, Shin-Ichi Minegishi
-
Publication number: 20090301048Abstract: A filter for removing particles from a gas stream has a filter pad with a coating which contains at least one of the following substances: (a) at least one aluminum oxide selected from alpha-, gamma-, delta- and theta-aluminum oxide, (b) hydrous aluminum oxide which is doped with silicon dioxide, at least one oxide of a metal of the 3rd to 5th B group, at least one oxide of a lanthanoid including lanthanum or a mixture of one or more of these oxides, (c) silicon dioxide or silicon-rich zeolite or (d) titanium dioxide which is doped with at least one oxide of a metal of the 3rd to 6th B group or an oxide of a lanthanoid including lanthanum, (e) a mixture of zirconium dioxide with at least one oxide of a metal of the 3rd to 5th B group, at least one oxide of a lanthanoid including lanthanum or a mixture of one or more of these oxides.Type: ApplicationFiled: April 11, 2007Publication date: December 10, 2009Inventors: Joerg Jockel, Matthias Kruse, Bernd Reinsch, Andreas Mattern, Christoph Saffe, Lars Thuener
-
Publication number: 20090277837Abstract: The present invention discloses fluoropolymer coated membranes and methods for making and using these membranes. The fluoropolymer coated membranes described in the current invention are prepared by coating a porous asymmetric membrane layer with a thin layer of fluoropolymer coating. The porous asymmetric membrane layer comprises an asymmetric cellulosic membrane, an asymmetric polymer membrane, or an asymmetric molecular sieve/polymer mixed matrix membrane with a low selectivity and high permeance. The fluoropolymer coating improves the selectivity of the porous asymmetric membrane layer and maintains the membrane performance with time.Type: ApplicationFiled: May 6, 2008Publication date: November 12, 2009Inventors: Chunqing Liu, Man-Wing Tang
-
Publication number: 20090274892Abstract: A hydrophobic insulating foam for use in, for example, insulating the walls of an aircraft fuselage, includes a base foam and a water repellant coating. The base foam has a plurality of interconnected open cells. The interconnected open cells and the outside of the base foam define a surface area. The water repellant coating is deposited on the surface area. The hydrophobic open celled foam may be made by providing a base foam having a plurality of interconnected open cells, providing a water repellant coating, and depositing the water repellant coating upon the surface area of the provided base foam.Type: ApplicationFiled: June 12, 2007Publication date: November 5, 2009Inventors: Feng Qin, Chad Edward Miller
-
Publication number: 20090266237Abstract: The invention relates to a method for the hydrothermal production of a microporous membrane. According to said method, a colloidal solution comprising zeolite frameworks with 4-ring, 6-ring, and/or 8-ring pores which are provided as crystallites whose size ranges from 2 to 25 nm is applied to a porous substrate with the aid of a wet application technique. The applied layer is contacted with a hydrothermal liquid, and a nanocrystalline, microporous zeolite layer having an average pore diameter of 0.2 to 0.45 nm is synthesized at temperatures ranging between 50 and 250° C. and at an autogenous pressure. Such a microporous membrane comprising a porous substrate and at least one nanocrystalline zeolite layer that is disposed thereupon and has an average pore diameter of 0.2 to 0.45 nm is advantageously suitable for use as a separating device for gas phase separation, making it possible to separate particularly N2O2, N2/CO2, H2/CO2, or CO2/CH4 gas mixtures.Type: ApplicationFiled: April 1, 2006Publication date: October 29, 2009Inventors: Jose Manuel Serra Alfaro, George Johannes Wilhelmus Van Der Donk, Wilhelm Albert Meulenberg, Detlev Stover, Hermann Gies
-
Patent number: 7597931Abstract: A device for producing a foam material, comprising a gas supply line which is connectable at a first end to a gas source, a material supply line which is connectable at a first end to a material supply source, a material transporting device which is connected to a second end of the material supply line, and a mixing device into which material and gas may be introduced and in which they may be mixed together, and from which a homogeneous mixed foam is deliverable from an output orifice.Type: GrantFiled: September 5, 2006Date of Patent: October 6, 2009Assignee: Nordson CorporationInventors: Frank Jones, Marcel Puffe
-
Publication number: 20090246365Abstract: After a second liquid is applied to a support and dried, a first liquid is applied thereon. On a film of the first liquid, a third liquid (water) is supplied in droplets using an inkjet-type liquid supply unit. An area supplied with the droplets is referred to as porous area. Next, an organic solvent is evaporated from the film and the droplets are evaporated from the porous area. Thus, a porous film is obtained. The porous film has the porous areas in which a plurality of pores are arranged. Since the droplets are directly formed by an inkjet printing method, a condensation process and a droplet growing process are unnecessary. Thus, the porous film is produced efficiently. Shapes of the porous areas can be changed easily. The porous areas can be formed on the porous film in various patterns.Type: ApplicationFiled: March 30, 2009Publication date: October 1, 2009Applicant: FUJIFILM CorporationInventors: Koju ITO, Hidekazu Yamazaki
-
Publication number: 20090226697Abstract: A polishing sheet which can improve waviness at a face of a material to be polished and which has a long life is provided. The polishing pad 1 has a polyurethane sheet 2 made of polyurethane resin. The polyurethane sheet 2 has a polishing layer which is disposed inside a surface layer and which is allowed to wear away by polishing and whose thickness is larger than a thickness of the surface layer. The polishing layer has an approximately uniform foam structure in a direction of the thickness of the polishing sheet 2 by being formed foams whose space volume is larger than that of foams formed at the surface layer and which are communicated so as to form a network by continuous holes.Type: ApplicationFiled: May 11, 2009Publication date: September 10, 2009Applicant: FUJIBO HOLDINGS, INC.Inventors: Takahiro KUME, Tomohiro IWAO
-
Patent number: 7584860Abstract: A hydrophilic body includes a porous membrane with hydrophobic properties. The porous membrane includes at least one of expanded polytetrafluoroethylene, woven polytetrafluoroethylene, and non woven polytetrafluoroethylene. A coating is formed on at least a portion of the porous membrane. The coating has hydrophilic properties and includes at least one of an organofunctional siloxane and a polyether urethane polymer.Type: GrantFiled: July 17, 2006Date of Patent: September 8, 2009Assignee: General Electric CompanyInventor: Karmin Lorraine Olson
-
Publication number: 20090203146Abstract: A polymer-based PLOT column prepared by in situ copolymerization of a functional monomer, which usually contains the retentive chemistries, and a crosslinking monomer, which enhances the strength of the polymer matrix, is disclosed. Styrenic based monomers such as styrene and divinylbenzene or meth/acrylic based monomers such as butyl or stearyl methacrylate and ethylene glycol dimethacrylate, are preferred. Columns of the invention can be prepared in a robust fashion with a very narrow i.d., e.g., 5-15 ?m. Thus, they are suitable for commercial use in ultratrace LC/MS proteomic analysis. Columns according to the invention are characterized by high resolving power, high column-to-column reproducibility and relatively high loading capacity. When these columns are coupled on-line with, e.g., ESI-MS detection, the resulting systems provide high sensitivity for analysis of complex proteomic samples, even down to the low attomole to sub-attomole level.Type: ApplicationFiled: June 20, 2007Publication date: August 13, 2009Applicant: Northeastern UniversityInventors: Barry L. Karger, Jian Zhang
-
Publication number: 20090197009Abstract: Droplets of an ultraviolet-curing resin are jetted on to a cavity plate included in a stacked body, and the droplets are cured by irradiating ultraviolet rays. Next, a vibration layer is formed on the cavity plate by an AD method. Further, a common electrode is formed on the vibration layer, and a mask is arranged on the vibration layer. Next, a piezoelectric layer is formed on the vibration layer, and thereafter, the mask is removed. Further, a through hole and pressure chambers are formed by removing parts of the cavity plate. Thereafter, individual electrodes are formed on the piezoelectric layer, and by heating the stacked body at about 850° C., annealing of the piezoelectric layer and sintering of the electrodes are performed. Accordingly, an ink-jet head including a filter which has a low channel resistance is manufactured.Type: ApplicationFiled: February 2, 2009Publication date: August 6, 2009Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventor: Hiroto SUGAHARA
-
Publication number: 20090184047Abstract: Functionalized nanopore membranes, apparatus and related methods, as can be used for selective analyte detection and/or separation.Type: ApplicationFiled: January 14, 2009Publication date: July 23, 2009Inventors: Sankaran Thayumanavan, Kothandam Krishnamoorthy, Elamprakash N. Savariar
-
Patent number: 7560142Abstract: A fiber containing a bound active material, such as a metal oxide, under 20 microns in diameter. The inventive fiber is formed through the mixing of the fibers with a cationic or anionic polymer in one tank, the active material with a cationic or anionic polymer in a second tank, the opposite zeta potential of that used with the active material, and then mixing the active material/polymer and fiber/polymer blends together.Type: GrantFiled: September 8, 2006Date of Patent: July 14, 2009Assignee: Graver Technologies LLCInventors: Walter Bass, Angelo Pantaleo, John Schroeder, Samuel Vetrano
-
Publication number: 20090139925Abstract: Membranes are made from polymers and heat treated so that they have at least two zones with pores of different sizes. Pores with a smaller size have a lower molecular weight cut off than pores with a larger size. Zones with pores of different sizes may also be made by coating portions of membranes with polymer coatings. Membranes with pores of different sizes may be used in dialyzers for hemofiltration, hemodiafiltration, and other hemodialysis procedures. The membranes may also be used in other separation processes.Type: ApplicationFiled: November 30, 2007Publication date: June 4, 2009Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventor: Shmuel Sternberg
-
Publication number: 20090139650Abstract: A method is provided for making a reverse osmosis membrane comprising flow modifier structures on one or more of its surfaces. The surface modifier structures are disposed on the membrane surface using a direct-write technique. In one embodiment, the present invention provides a method of making a reverse osmosis membrane, the method comprising providing a first membrane layer having an active surface and disposing on the active surface one or more flow modifier structures suing a direct-write technique. In an alternate embodiment, the present invention provides a method for making a polyethersulfone membrane comprising surface structures created using a direct-write technique. In yet another embodiment, the present invention provides a method for making a membrane stack assembly comprising a membrane layer and a feed carrier layer wherein a direct-write technique is used to create surface structures (flow modifier structures) on each of the membrane layer and the feed carrier layer.Type: ApplicationFiled: December 12, 2008Publication date: June 4, 2009Applicant: GENERAL ELECTRIC COMPANYInventors: Canan Uslu Hardwicke, Aaron John Avagliano, Gregory Robert Chambers, Stephen Francis Rutkowski, Edward Joseph Hall
-
Publication number: 20090139193Abstract: A wall-flow honeycomb filter comprising a ceramic monolith having a plurality of porous walls formed therein. The plurality of porous walls define a plurality of inlet cells and a plurality of outlet cells extending between an inlet end face and an outlet end face of the monolith. The inlet cells are open at the inlet end face and plugged at or near the outlet end face. The outlet cells are open at the outlet end face and plugged at or near the inlet end face. The monolith has a ratio of a combined cross-sectional area of the inlet cells to a combined cross-sectional area of the outlet cells greater than 1. The monolith has at least one inlet cell cluster which contains an N×M group of inlet cells, N and M being integers greater than 1, each inlet cell cluster consisting of a plurality of inlet cells separated by inlet cluster walls.Type: ApplicationFiled: November 19, 2008Publication date: June 4, 2009Inventors: Nicolas Garcia, Maxime Moreno, Christophe Michel Remy
-
Patent number: 7540984Abstract: The present invention relates to a novel proton-conducting polymer membrane based on polyazoles which can, because of its excellent chemical and thermal properties, be used in a variety of ways and is particularly useful as polymer electrolyte membrane (PEM) to produce membrane electrode units for PEM fuel cells.Type: GrantFiled: October 31, 2007Date of Patent: June 2, 2009Assignee: BASF Fuel Cell GmbHInventors: Gordon Calundann, Michael J. Sansone, Oemer Uensal, Joachim Kiefer
-
Publication number: 20090129995Abstract: Coating a wall-flow filter with a catalytically active coating generally increases the exhaust-gas backpressure in the filter. The increase in the exhaust-gas backpressure is particularly pronounced if a slurry of fine-particle catalyst materials is used for the coating operation. The increase in the exhaust-gas backpressure can be restricted to a tolerable level if, prior to the coating operation, the slurry is so finely milled that virtually the entire mass of the catalyst materials is introduced into the pores of the filter and deposited on the inner surfaces of the pores. This is the case if the d90 diameter of the particles in the slurry is reduced to below 5 ?m by milling.Type: ApplicationFiled: August 13, 2005Publication date: May 21, 2009Applicant: UMICORE AG & CO. KGInventors: Marcus Pfeifer, Markus Koegel, Christian Kuehn, Roger Staab, Paul Spurk, Egbert Lox, Thomas Kreuzer
-
Patent number: 7531211Abstract: A process for the production of a honeycomb-like porous body of 10 to 1000 nm in thickness which is made of a water-insoluble polymer and has pores having diameters of 10 to 100 nm, which comprises the following steps: (1) the step of dissolving a water-insoluble polymer in a water-incompatible organic solvent having a surface tension (?L) of 50 dyne/cm or below to prepare a solution of the polymer in the organic solvent, (2) the step of applying the solution prepared in the step (1) to the surface of a substrate with the proviso that the surface tension (?S) of the substrate, the surface tension (?L) of the organic solvent, and the surface tension (?SL) between the substrate and the solvent satisfy the relationship: ?S??SL>?L, and (3) the step of bringing the solution applied on the substrate into contact with air having a relative humidity of 30% or above to evaporate the organic solvent at such a rate that the coating thickness at applying the solution to the surface of the substrate is reduced to one-fType: GrantFiled: May 3, 2007Date of Patent: May 12, 2009Assignee: National University Corporation Hokkaido UniversityInventors: Masatsugu Shimomura, Hiroshi Yabu
-
Patent number: 7513921Abstract: An exhaust gas filter apparatus includes a particulate filter for collecting a particulate from an exhaust gas. The exhaust gas filter also includes a electromagnetic radiation resonator to heat a portion of the particulate to ignite the particulate and regenerate the particulate filter.Type: GrantFiled: October 24, 2005Date of Patent: April 7, 2009Assignee: HRL Laboratories, LLCInventors: Amanda C. Phelps, Kevin W. Kirby, Daniel Gregoire
-
Patent number: 7510598Abstract: A gas separator is provided, including a porous substrate made of a first ceramic and a gas-separating layer containing zeolite disposed on the surface of the porous substrate. The gas-separating layer further contains, in addition to zeolite, a thermal expansion coefficient-adjusting material made of a second ceramic having a linear thermal expansion coefficient satisfying a predetermined relationship, so that the difference between the thermal expansion coefficient of the porous substrate and the gas-separating layer can be reduced.Type: GrantFiled: February 14, 2006Date of Patent: March 31, 2009Assignee: NGK Insulators, Ltd.Inventors: Kenji Suzuki, Kenji Yajima, Kunio Nakayama, Toshihiro Tomita
-
Publication number: 20090078637Abstract: A filter media that inhibits the formation of static charge in a liquid flowing through the filter media comprises a filtration layer having a first surface and a second surface opposite the first surface and comprising a non-conductive fibrous material having a plurality of fibers, the fibrous material comprising a metal layer deposited on at least a portion of the fibers through at least a portion of the thickness of the filtration layer. The filter media or a filter apparatus incorporating the filter media does not require means for dissipating static charge from the fluid and, therefore, does not require grounding.Type: ApplicationFiled: September 24, 2008Publication date: March 26, 2009Inventor: Bruce E. Shane
-
Publication number: 20090061168Abstract: A method for manufacturing a floor covering including forming a printing layer and a transparent film layer sequentially on a base layer made of polyvinyl chloride (PVC) as a main ingredient, forming a balance layer underneath the base layer, and forming a plurality of foam layers arranged in a row to be equally spaced apart from each other underneath the balance layer is disclosed. The floor covering manufactured by the above has a slip-resistant effect on the floor of a building during the construction. Thus, the construction is carried out without an additional adhesive, and the use amount of the adhesive may be significantly reduced, if being used. Moreover, the floor covering can be replaced immediately without the finishing process, as well as, the recovered floor covering can be recycled since there is no damage thereon. Thus, an eco-friendly construction becomes possible.Type: ApplicationFiled: December 17, 2007Publication date: March 5, 2009Applicant: D&J ART CO., LTD.Inventors: Duk-Soo Kim, Kwang-Hun Koh, Chang-Bo Yuon, Chul-Duk Oh
-
Patent number: 7497951Abstract: A composite semipermeable membrane, which comprises a separating functional layer comprising polyamide formed on a porous substrate film, wherein the separating functional layer comprising polyamide has a mean pore radius of 0.25 nm to 0.35 nm and a vacancy content of 0.2 nm3% to 0.3 nm3%, measured by positron annihilation lifetime spectroscopy.Type: GrantFiled: October 28, 2005Date of Patent: March 3, 2009Assignee: Toray Industries, Inc.Inventor: Hiroki Tomioka
-
Patent number: 7479300Abstract: A composite polyamide reverse osmosis membrane and method of producing same. In a preferred embodiment, the membrane is made by coating a porous polysulfone support with an aqueous solution containing 2 wt % m-phenylenediamine (MPD), and 0.1 wt % di(ethylene glycol) hexyl methyl ether. Next, the excess solution is removed, and the coated support is dipped in 0.1 wt % organic solvent solution of trimesoyl chloride (TMC) in a mixture of alkanes having from 8 to 12 carbon atoms. After draining the TMC solution off, the resulting composite membrane is air dried and then rinsed in a basic aqueous solution. The resultant membrane exhibits a flux of 21.3 gfd and a salt rejection of 98.9% when used at 225 psi for an aqueous solution containing 2000 ppm of NaCl.Type: GrantFiled: March 30, 2005Date of Patent: January 20, 2009Assignee: Woongjin Chemical Co., Ltd.Inventors: Ja-Young Koo, Sung Pyo Hong, Jong Hwa Lee, Jun Suk Kim
-
Publication number: 20080317953Abstract: Mesoporous articles and methods for making mesoporous articles are disclosed.Type: ApplicationFiled: August 22, 2008Publication date: December 25, 2008Applicant: University of MassachusettsInventors: James J. Watkins, Rajaram Pai
-
Publication number: 20080307971Abstract: The present invention provides a filter medium reducing an increase in pressure drop while in use even in an environment where ultrafine particles form a large proportion of the particles to be collected. The filter medium includes a porous polytetrafluoroethylene (PTFE) membrane, an air-permeable supporting member and a web layer made of polymeric fibers formed by electrospinning (charge induction spinning, electrostatic spinning). The filter medium of the present invention may include an air-permeable adhesive layer adjacent to the web layer.Type: ApplicationFiled: April 26, 2006Publication date: December 18, 2008Applicant: NITTO DENKO CORPORATIONInventors: Yuri Horie, Eizo Kawano, Masaaki Mori
-
Publication number: 20080257818Abstract: The present invention aims at providing a composite semipermeable membrane having outstanding water permeability and salt-blocking rate, and extremely small amount of unreacted polyfunctional amine components in the porous support, and at providing a process for producing the composite semipermeable membrane. A composite semipermeable membrane having a skin layer formed on the surface of a porous support, the skin layer comprising a polyamide resin obtained by interfacial polymerization of a polyfunctional amine component and a polyfunctional acid halide component, wherein the porous support has a microporous layer on a base material, and the content of an unreacted polyfunctional amine component in the base material after a membrane washing treatment is 0.5 mg/m2 or less.Type: ApplicationFiled: September 9, 2005Publication date: October 23, 2008Applicant: NITTO DENKO CORPORATIONInventors: Takahisa Konishi, Tomomi Ohara, Chiaki Harada, Tetsuo Inoue, Naoki Kurata, Takashi Kamada, Hironobu Machinaga
-
Publication number: 20080254276Abstract: A system for forming a surface coating on an outer surface of a foam for use with cooling system of turbine engines. The system may include removing filler from the outer surface of the foam to expose a porous structure of the foam, whereby portions of the porous structure extend outwardly from a newly formed outer surface of the filler. A surface layer may be applied to the outer surface of the filler and exposed portions of the porous structure, whereby the surface layer is attached to the porous structure at least in part due to mechanical interaction with the portions of the porous structure extending outwardly from the newly formed outer surface of the filler. The filler material may then be removed from the porous structure.Type: ApplicationFiled: April 10, 2007Publication date: October 16, 2008Inventors: Allister W. James, Douglas J. Arrell
-
Publication number: 20080250934Abstract: An antiallergen filter of the present invention is characterized in that a water-insoluble high-molecular weight anti-allergenic agent having a phenolic hydroxyl group and a moisture-absorbing material are carried on a filter. Because of using the water-insoluble high-molecular weight substance as an anti-allergenic agent, the antiallergen filter of the present invention is free from a problem that the anti-allergenic agent flows and drops or is detached from the filter due to moisture in the atmosphere, etc. even in a highly humid environment or the like. Further, since the moisture-absorbing material is carried on the filter, moisture that the anti-allergenic agent requires for adsorbing and capturing an allergen and inactivating its allergic activity can be effectively retained on the filter. Thus, the antiallergen filter of the present invention can effectively exert its anti-allergenic effect over a prolonged period of time.Type: ApplicationFiled: June 6, 2008Publication date: October 16, 2008Applicant: Matsushita Electric Industrial Co., LTD.Inventors: Jun Inagaki, Ryousuke Suga, Takahiro Nakajima, Mitsuhito Teramoto, Taro Suzuki