Fabrics Patents (Class 210/507)
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Patent number: 11925732Abstract: A device for variable volatilization of a compound includes first and second heating elements that cooperate to form a heating chamber and each having a movement enabling structure; the movement enabling structures being configured to allow movement of the first and second heating elements relative to one another; an adjustment mechanism cooperating with the movement enabling structures to produce selective relative movement of the first and second heating elements; and wherein movement of the adjustment mechanism in a first direction results in relative movement of the heating elements away from one another and movement in a second direction produces relative movement of the heating elements toward one another resulting in adjustment of the amount of heat within the heating chamber. Methods of adjusting the amount of heat within a heating chamber are also disclosed.Type: GrantFiled: July 12, 2019Date of Patent: March 12, 2024Assignee: The Yankee Candle Company, Inc.Inventors: James A. Layer, Robert E. Shave
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Patent number: 10099456Abstract: A composite radius filler material is provided. The composite radius filler includes a resin, a first group of fibers dispersed within the resin, and a second group of fibers dispersed within the resin. The first group of fibers has a first length configured to facilitate orientation in a longitudinal direction. The second group of fibers has a second length that is shorter than the first length, with the second group of fibers configured to facilitate random orientation in a transverse direction.Type: GrantFiled: July 29, 2015Date of Patent: October 16, 2018Assignee: The Boeing CompanyInventors: Weidong Song, Tia Benson Tolle, Jonathan D. Robbins, Jamie J. Langabeer
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Patent number: 9533312Abstract: A method for applying a moisture barrier to a precipitator of cardboard for a two-step electrofilter, wherein the precipitator includes at least two paper bands (5) that constitute electrode elements in the precipitator, which paper bands (5) are multiply wound around a center axis of the precipitator, wherein the paper bands (5) exhibit a thin plastic layer with a thickness of 5-50 micrometers on their lateral surfaces (4), and where proximate electrode elements are arranged at a distance from one another in the radial direction of the precipitator. The method is characterized in that edge parts (6) of the paper bands (5) have a moisture-resistant substance applied to them. The material for fabricating a precipitator of cardboard for a two-step electrofilter is also described.Type: GrantFiled: December 20, 2012Date of Patent: January 3, 2017Inventor: Andrzej Loreth
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Publication number: 20150125504Abstract: Melt blown bicomponent fibers comprising a first thermoplastic polymeric material and a second thermoplastic polymeric material comprising homo- or co-polymer(s) of poly(m-xylene adipamide) or polyphenylene sulfide. The first thermoplastic polymeric material may be one or more homo- or co-polymer(s) of nylon 6 (polycaprolactam), nylon 6,6 (poly(hexamethylene adipamide)), polypropylene, and/or polybutylene terephthalate. A plurality of bicomponent fibers may thermally bonded to one another at spaced apart points of contact to define a porous structure that substantially resists crushing. The nonwoven fabric webs and rovings and self-supporting, three-dimensional porous elements may be formed from the plurality of bicomponent fibers.Type: ApplicationFiled: November 7, 2014Publication date: May 7, 2015Inventors: Bennett C. Ward, Brenton D. Dillie
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Patent number: 9022229Abstract: A filtering membrane has a supporting structure comprising filaments and is coated with a dope to produce a polymeric membrane layer. Some or all of the filaments comprise a second polymer that is soluble or swellable in a solvent of the dope. The supporting structure may be braided with yarns. One or more yarns may comprise filaments comprising the second polymer. In one example, a braided tubular support is coated with a dope based on PVDF in NMP. Some or all of the yarns of the braid are made of bi-component core-sheath PET-PVDF filaments. With as few as 4% of the yarns in the braid made of the bicomponent filaments, peel strength and pull force of the membrane is improved relative to a braid made entirely of PET yarns. In experimental examples, unpeelable composite membranes were produced. The membrane may be used, for example, for water or wastewater filtration applications.Type: GrantFiled: March 9, 2012Date of Patent: May 5, 2015Assignee: General Electric CompanyInventors: Kristof Vizvardi, Marcell Marschall, Andras Gyorgy Pozsgay, Zoltan A. Fekete
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Patent number: 8980104Abstract: An activated carbon cloth-supported bimetallic Pd—Cu nanocatalyst is disclosed comprising about 1 wt % Pd and about 0.35-0.45 wt % Cu and having a surface Cu/Pd metal ratio of about 8-10 m2/m2. The nanocatalyst is capable of removing nitrate and/or nitrite from wastewater with a high selectivity to nitrogen.Type: GrantFiled: May 4, 2010Date of Patent: March 17, 2015Assignee: Technion Research and Development Foundation Ltd.Inventors: Moshe Sheintuch, Uri Matatov-Meytal
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Patent number: 8960448Abstract: A two-layered osmosis membrane contains a support layer and a rejection layer. The support layer, in which a mesh is embedded, is made of a phase separation polymer and has a thickness of 50 to 200 ?m. The rejection layer, which adheres to the support layer, is made of a thin film composite polymer and has a thickness of 0.05 to 3 ?m. The mesh, which is embedded in the support layer, has an open area of 30 to 70%, a mesh size of 60-300 mesh, and a thickness of 45-150 ?m. Also disclosed is a method of making the above described membrane.Type: GrantFiled: December 26, 2012Date of Patent: February 24, 2015Assignee: National University of SingaporeInventors: How Yong Ng, Wei Duan
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Publication number: 20150014241Abstract: A filter element of a filter for filtering fluid has a multilayer filter medium through which the fluid flows in a flow direction from an inflow side to an outflow side of the filter medium for filtration. The filter medium has several layers including at least one filtration layer and at least one support layer. The at least one support layer supports the filter medium against pressures having pressure gradients transverse or oblique to the flow direction of the fluid through the filter medium.Type: ApplicationFiled: July 15, 2014Publication date: January 15, 2015Inventor: Heiko Wyhler
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Patent number: 8900462Abstract: A leukocyte-removing filter, characterized in that it comprises a filter material having a vertical permeation coefficient (kx) of 0.5×10?12 to 2.0×10?12 m2 and a ratio (ky/kx) of a horizontal permeation coefficient (ky) to kx of 0.5 to 1.5; and a method for removing leukocytes using said filter. The above leukocyte-removing filter has a higher leukocyte-removing performance per unit volume and also does not bring clogging nor increase of pressure drop.Type: GrantFiled: June 9, 2005Date of Patent: December 2, 2014Assignee: Asahi Kasei Medical Co., LtdInventors: Yukihiro Yamada, Yukihiko Uchi
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Patent number: 8851297Abstract: The present invention aims at providing a composite semipermeable membrane in which water permeability and salt-blocking rate cannot deteriorate by long-term storage, and at providing a process for producing the same. The present invention relates to a composite semipermeable membrane having a skin layer formed on the surface of a porous support, the skin layer including a polyamide resin obtained by interfacial polymerization of a polyfunctional amine component and a polyfunctional acid halide component, wherein the porous support contains at least one kind of additives selected from the group consisting of antioxidants, antibacterial agents, antifungal agents, and moisturizers, in an amount of 95% by weight or more with respect to the whole composite semipermeable membrane.Type: GrantFiled: October 27, 2009Date of Patent: October 7, 2014Assignee: Nitto Denko CorporationInventors: Tomomi Ohara, Atsuhito Koumoto
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Publication number: 20140231337Abstract: Provided is a filter material which can enhance the particle holding capacity of a filter while keeping the particle capture efficiency thereof and which thus ensures a prolonged filter life. The present invention pertains to a filter material comprising a spun lace nonwoven fabric which contains a thermoplastic synthetic filament nonwoven fabric as the intermediate layer.Type: ApplicationFiled: September 9, 2011Publication date: August 21, 2014Inventors: Hideaki Fujii, Yoshiyuki Tadokoro, Satoru Tezuka, Kiyoshi Miyaji, Tatsuya Ogawa, Saori Tanaka
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Publication number: 20140197095Abstract: The invention relates to a multi-layer cleanable filter material for gas and liquid filtration, said filter material comprising a filter layer and a substrate layer that follows the filter layer in the flow direction, wherein the filter layer is substantially dendrite-free and consists of a melt-blown fleece made of elastic polymer fibres that has a breaking elongation of at least 100%.Type: ApplicationFiled: February 9, 2012Publication date: July 17, 2014Applicant: NEENAH GESSNER GmbHInventors: Andreas Demmel, Ingrid Meyr, Bernd Klausnitzer
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Publication number: 20140166572Abstract: Fiber webs that may be coated and used in filter media are provided. In some embodiments, the fiber web is a non-woven web that is coated with a resin comprising fibers. For example, the resin may include fibers that have sizes (e.g., diameters) in the nano or micron range. In some cases, the fibers distributed within the resin are fibrillated fibers. The respective characteristics and amounts of the fibers in the resin may be selected to impart desirable properties including enhanced mechanical properties and filtration properties (e.g., relatively high strength and air permeability), amongst other benefits.Type: ApplicationFiled: December 14, 2012Publication date: June 19, 2014Applicant: Hollingsworth & Vose CompanyInventor: Mark Snyder
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Patent number: 8708162Abstract: Provided are nonwoven polymeric fiber webs using an improved curable composition. Such curable composition comprises an aldehyde or ketone and an amine salt of an inorganic acid. The composition when applied to polymeric fibers is cured to form a water-insoluble polymer binder which exhibits good adhesion and thermodimensional stability.Type: GrantFiled: August 19, 2009Date of Patent: April 29, 2014Assignee: Johns ManvilleInventors: Kiarash Alavi Shooshtari, James Patrick Hamilton, Jawed Asrar
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Publication number: 20130199992Abstract: Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The microfiber and nanofiber structures can be used in a variety of useful applications including the formation of filter materials.Type: ApplicationFiled: January 10, 2013Publication date: August 8, 2013Applicant: Donaldson Company, Inc.Inventor: Donaldson Company, Inc.
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Patent number: 8460554Abstract: Forward osmosis membranes include an active layer and a thin support layer. A bilayer substrate including a removable backing layer may allow forward osmosis membranes with reduced supporting layer thickness to be processed on existing manufacturing lines.Type: GrantFiled: April 17, 2012Date of Patent: June 11, 2013Assignee: Oasys Water, Inc.Inventors: Robert McGinnis, Gary McGurgan
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Patent number: 8424687Abstract: A support for a separation membrane includes a long-fiber nonwoven fabric composed of thermoplastic continuous filaments.Type: GrantFiled: July 28, 2008Date of Patent: April 23, 2013Assignee: Toray Industries, Inc.Inventors: Ryoichi Hane, Jun Ogihara, Hiroyuki Matsuura, Yohei Nakano, Naoki Shibusawa, Tatsuya Kajino, Yoshikazu Yakake
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Patent number: 8245855Abstract: The invention relates to a thread system (1) for installing in drinking water systems and other liquid-guiding systems (T), said thread system having a multidimensional structure formed by at least one thread (200) which exhibits a germicidal activity in a damp environment due to oligodynamic metal parts in the thread. According to the invention, the thread system (1) is provided with a first surface structure (10), and a plurality of spacer thread elements (11) extends perpendicularly to the surface structure (10) in such a way that the thread system (1) forms an elastically deformable three-dimensional spacer structure, the thread (200) with the germicidal activity being arranged in the surface structure (10) and/or in the region of the spacer thread elements (11). The elastic properties enable the same thread system (11) to be used for a plurality of different drinking water systems.Type: GrantFiled: September 26, 2005Date of Patent: August 21, 2012Assignee: Silvertex AGInventor: Detlef Militz
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Patent number: 8181794Abstract: Forward osmosis membranes include an active layer and a thin support layer. A bilayer substrate including a removable backing layer may allow forward osmosis membranes with reduced supporting layer thickness to be processed on existing manufacturing lines.Type: GrantFiled: August 24, 2010Date of Patent: May 22, 2012Assignee: Oasys Water, Inc.Inventors: Robert McGinnis, Gary McGurgan
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Patent number: 8158002Abstract: The present invention provides variable pore size filters. The variable pore size filters of the present invention comprise a fabric matrix, having a set pore size, wherein the fabric matrix is coated with a gel that expands and shrinks in response to a trigger. When the gel is expanded, the pore size of the filter is small and filtering is accomplished. When the gel is shrunken, the pore size of the filter is large and cleaning of the filter by a backwash or forward flush of fluid is accomplished.Type: GrantFiled: March 17, 2000Date of Patent: April 17, 2012Assignee: Foster-Miller, Inc.Inventors: Elmer C. Lupton, Thomas H. E. Mendum, R. Edwin Hicks, Leslie S. Rubin, Justyna B. Teverovsky, Harris Gold
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Patent number: 8136676Abstract: One object of the present invention is to provide polymers suitable for use as medical materials. The present invention provides a polymer useful as a medical material having the general formula -(A)1-(B)m—(C)n—??(I) in which A is derived from an alkoxyalkyl (alkyl)acrylate monomer; B is derived from a monomer containing a primary, secondary, tertiary or quaternary amine group; C is derived from a non-ionic monomer; and 1+m+n=100,0<1, m, n<100.Type: GrantFiled: August 11, 2005Date of Patent: March 20, 2012Assignee: University of SouthamptonInventors: Hitoshi Mizomoto, Mark Bradley
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Patent number: 8119012Abstract: A filter and filter material for providing or treating potable water is provided. The filter includes a housing having an inlet and an outlet, a filter material disposed within the housing, the filter material formed at least in part from a mixture of a plurality of mesoporous and microporous activated carbon particles. Preferably, at least some of the mesoporous activated carbon filter particles are coated with a cationic polymer, and even more preferably, at least some of the particles are coated with a cationic polymer and silver or a silver containing material. Kits comprising filters and information relating to the reduction, killing or removal of bacteria, viruses, microbials, and TTHM are also provided.Type: GrantFiled: March 7, 2011Date of Patent: February 21, 2012Assignee: The Procter & Gamble CompanyInventors: Jeannine Rebecca Bahm, Andrew Thomas Pearks, Guillermo Matias Vidal, Dimitris Ioannis Collias, Michael Donovan Mitchell, Robert E. Astle, Katharine L. K. Faye, Robert Andrew Governal, Thomas J. Hamlin, Rebecca A. Lucht, Hemang Patel
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Publication number: 20120012523Abstract: A fabric material composite construction, for use as a filter means or media, characterized in that said construction comprises a combination of one or more nanofiber layers and a synthetic single-thread squarely knitted precision fabric.Type: ApplicationFiled: March 11, 2010Publication date: January 19, 2012Inventors: Paolo Canonico, Liuba Napoli
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Publication number: 20110303620Abstract: Product, method of making product, and technique for using product to separate oil from water via a filter, such as cotton, polyester, or leather, coated with a chemical that blocks oil while allowing water to pass therethrough.Type: ApplicationFiled: June 10, 2011Publication date: December 15, 2011Inventor: Di Gao
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Patent number: 7988854Abstract: A dialysate regeneration chamber is provided. In one embodiment, the dialysate regeneration chamber may include a toxin trap configured to selectively trap toxins and repel select cations.Type: GrantFiled: September 19, 2008Date of Patent: August 2, 2011Assignee: Chemica Technologies, Inc.Inventor: Takuji Tsukamoto
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Devices and Methods for Removing Contaminants and Other Elements, Compounds, and Species from Fluids
Publication number: 20110114573Abstract: Embodiments of the present invention provide filtration media that includes graphene powder, compositions including the media, filtration devices for use with the media, and methods for using the filtration media and compositions to remove unwanted contaminants and/or other elements, compounds, and species from fluids.Type: ApplicationFiled: August 30, 2010Publication date: May 19, 2011Inventors: Robert C. Simpson, Victor I. Petrik -
Patent number: 7922008Abstract: A filter and filter material for providing or treating potable water is provided. The filter includes a housing having an inlet and an outlet, a filter material disposed within the housing, the filter material formed at least in part from a mixture of a plurality of mesoporous and microporous activated carbon particles. Preferably, at least some of the mesoporous activated carbon filter particles are coated with a cationic polymer, and even more preferably, at least some of the particles are coated with a cationic polymer and silver or a silver containing material. Kits comprising filters and information relating to the reduction, killing or removal of bacteria, viruses, microbials, and TTHM are also provided.Type: GrantFiled: July 10, 2009Date of Patent: April 12, 2011Assignee: The Procter & Gamble CompanyInventors: Jeannine Rebecca Bahm, Andrew Thomas Pearks, Guillermo Matias Vidal, Dimitris Ioannis Collias, Michael Donovan Mitchell, Robert E. Astle, Katharine L. K. Faye, Robert Andrew Governal, Thomas J. Hamlin, Rebecca A. Lucht, Hemang Patel
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Patent number: 7913858Abstract: Acid-neutralizing filter media includes filter media fibers in combination with a strong base of small particle size and high surface area attached to and immobilized on the filter media fibers, and methodology therefore.Type: GrantFiled: July 10, 2007Date of Patent: March 29, 2011Assignee: Fleetguard, Inc.Inventors: William C. Haberkamp, David M. Stehouwer, Barry M. Verdegan
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Publication number: 20100326907Abstract: A method for removing contaminants from a fluid-material comprising: providing at least one substrate comprising a three-dimensional knit in an initial configuration made of knitted polymeric fiber which substantially resumes the initial configuration after it is released from stretching or compressing force; and submerging said at least one substrate in a fluidic material for treatment of the fluidic material.Type: ApplicationFiled: June 29, 2008Publication date: December 30, 2010Inventors: Jonah Gavrieli, Pinhas Hascalovich
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Patent number: 7775376Abstract: The invention relates to a filter for the separation of leukocytes from whole blood, comprising a hydrophobic support material and a polymeric coating material, whereby the surface of the filter has a critical surface wetting tension in the range 50 to 80 dyn/cm and the polymeric coating material may be obtained by polymerisation reaction of mixtures comprising hydrophobic and hydrophilic monomers. The invention further relates to a method for production of said filter and devices for the separation of leukocytes from whole blood and the use of the filter.Type: GrantFiled: January 22, 2004Date of Patent: August 17, 2010Assignee: Fresenius Hemocare Italia S.R.L.Inventors: Paolo Bonaguidi, Giorgio Mari, Paolo Verri
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Publication number: 20100155326Abstract: A domestic appliance filter for use in a laundry treatment device includes a basic filter material with a hydrophobic coating for filtering out matter from a process water duct or a process air duct. The basic filter material includes a material which is resistant to temperatures of 160° C. or more and the hydrophobic coating on the basic filter material effects a surface energy of less than 35 mN/m.Type: ApplicationFiled: December 1, 2009Publication date: June 24, 2010Applicant: BSH BOSCH UND SIEMENS HAUSGERATE GMBHInventor: Klaus Grunert
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Publication number: 20100155323Abstract: A grafted nonwoven substrate is disclosed having average fiber sizes of 0.7 to 15 microns, and a void volume of 50 to 95%, and a polymer comprising cationic aminoalkyl(meth)acryloyl monomer units grafted to the surface of the nonwoven substrate. The article may be used as a filter element to purify or separate target materials, such as oligonucleotides or monoclonal antibodies (MAb), from a fluid mixture.Type: ApplicationFiled: November 18, 2009Publication date: June 24, 2010Inventors: Douglas E. Weiss, Clinton P. Waller, JR., Michael R. Berrigan, Andrew W. Rabins, Jeffrey A. Lucas, Kannan Seshadri, Catherine A. Bothof
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Patent number: 7740765Abstract: Disclosed is a method of providing potable water that includes providing a filter, passing water through the filter, and removing bacteria and viruses from the water with the filter. The filter comprises a housing having an inlet and an outlet and a filter material disposed within the housing, the filter material formed at least in part from a plurality of filter particles consisting of mesoporous activated carbon. A sum of mesopore and macropore volumes of the filter particles may be between about 0.2 mL/g and about 2 mL/g, wherein mesopore means an intra-particle pore having a diameter between 2 nm and 50 nm, and macropore means an intra-particle pore having a diameter greater than 50 nm, a total pore volume of the filter particles is greater than about 0.4 mL/g and less than about 3 mL/g, and a ratio of the sum of the mesopore and macropore volumes to the total pore volume of the filter particles is greater than about 0.3.Type: GrantFiled: May 13, 2009Date of Patent: June 22, 2010Assignee: The Procter & Gamble CompanyInventors: Michael Donovan Mitchell, Dimitris Ioannis Collias, David William Bjorkquist, Piyush Narendra Zaveri, Matthew Morgan Woolley
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Patent number: 7740766Abstract: Disclosed is a method of providing potable water that includes providing a filter, passing water through the filter, and removing bacteria and viruses from the water with the filter. The filter comprises a housing having an inlet and an outlet and a filter material disposed within the housing, the filter material formed at least in part from a plurality of mesoporous wood activated carbon filter particles and particles selected from the group consisting of mesoporous wood activated carbon filter particles coated entirely with a cationic polymer, mesoporous wood activated carbon filter particles partially coated with a cationic polymer, and mixtures thereof. A sum of mesopore and macropore volumes of the filter particles may be between about 0.2 mL/g and about 2 mL/g, wherein mesopore means an intra-particle pore having a diameter between 2 nm and 50 nm, and macropore means an intra-particle pore having a diameter greater than 50 nm, a total pore volume of the filter particles is greater than about 0.Type: GrantFiled: May 13, 2009Date of Patent: June 22, 2010Assignee: The Procter & Gamble CompanyInventors: Michael Donovan Mitchell, Dimitris Ioannis Collias, David William Bjorkquist, Piyush Narendra Zaveri, Matthew Morgan Woolley
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Patent number: 7712613Abstract: A filter and filter material for providing or treating potable water is provided. The filter includes a housing having an inlet and an outlet, a filter material disposed within the housing, the filter material formed at least in part from a mixture of a plurality of mesoporous and microporous activated carbon particles. Preferably, at least some of the mesoporous activated carbon filter particles are coated with a cationic polymer, and even more preferably, at least some of the particles are coated with a cationic polymer and silver or a silver containing material. Kits comprising filters and information relating to the reduction, killing or removal of bacteria, viruses, microbials, and TTHM are also provided.Type: GrantFiled: September 16, 2008Date of Patent: May 11, 2010Assignee: PUR Water Purification Products, Inc.Inventors: Jeannine Rebecca Bahm, Andrew Thomas Pearks, Guillermo Matias Vidal, Dimitris Ioannis Collias, Michael Donovan Mitchell, Robert E. Astle, Katharine L. K. Faye, Robert Andrew Governal, Thomas J. Hamlin, Rebecca A. Lucht, Hemang Patel
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Publication number: 20100038326Abstract: A medium for the filtration of a fluid containing molecules of a Lewis acid is described, wherein the medium comprises a fluid-porous textile substrate having molecules grafted thereto, the molecules including at least one group having the properties of a Lewis base, such that the molecules of the above-mentioned Lewis acid can be retained in the textile substrate upon complexation with the grafted groups. A method for producing one such medium and a method for removing boric acid from an aqueous solution using one such filtration medium are described.Type: ApplicationFiled: January 28, 2008Publication date: February 18, 2010Applicant: LAINIERE DE PICARDIE BCInventor: Nabila Kourda
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Patent number: 7614507Abstract: A filter for providing potable water is provided. The filter includes a housing having an inlet and an outlet, a filter material disposed within the housing, the filter material formed at least in part from a plurality of mesoporous, basic, and reduced-oxygen activated carbon filter particles. Preferably, at least some of the mesoporous activated carbon filter particles are coated with a cationic polymer, and even more preferably, at least some of the particles are coated with a cationic polymer and silver or a silver containing material. Kits comprising filters and information relating to the killing or removal of bacteria, viruses, and microbials are also provided.Type: GrantFiled: November 11, 2003Date of Patent: November 10, 2009Assignee: PUR Water Purification Products Inc.Inventors: Michael Donovan Mitchell, Dimitris Ioannis Collias, David William Bjorkquist, Piyush Narendra Zaveri, Matthew Morgan Woolley
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Publication number: 20090211968Abstract: The invention features alcohol and water repellent non-woven fabrics made from synthetic polymer fibers. The fibers comprise a surface modifier admixed with the synthetic polymer to impart alcohol and water repellency properties.Type: ApplicationFiled: January 17, 2007Publication date: August 27, 2009Applicant: Interface Biologics, Inc.Inventors: Jeannette Ho, Richard Witmeyer, Paul J. Santerre
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Patent number: 7553417Abstract: Functionalized substrates, methods of making functionalized substrates, and methods of using functionalized substrates are disclosed.Type: GrantFiled: December 15, 2006Date of Patent: June 30, 2009Assignee: 3M Innovative Properties CompanyInventors: Clinton P. Waller, Jr., Douglas Eugene Weiss
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Publication number: 20090001012Abstract: Anti-microbial compositions and devices comprising anti-microbial compositions are disclosed. Methods of making and using anti-microbial compositions and devices are also disclosed.Type: ApplicationFiled: September 9, 2008Publication date: January 1, 2009Inventors: Bryan Kepner, Eric Mintz
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Patent number: 7441667Abstract: An improved casting substrate is provided for use in a composite membrane for use as a fluid filtration medium. The composite membrane has good adhesion between the casting substrate and the microporous membrane while maintaining high permeability. The casting substrate comprises a single spunbond layer or a multiple spunbond layers formed of thermoplastic fibers, optionally comprising at least one meltblown layer. The casting substrate allows the membrane casting solution to penetrate the casting substrate uniformly to a controlled depth without penetrating through the entire thickness of the substrate. The casting substrate has good uniformity of mean pore size, basis weight, thickness and surface roughness.Type: GrantFiled: December 15, 2005Date of Patent: October 28, 2008Assignee: E.I. du Pont de Nemours and CompanyInventors: Jennifer Marie Galvin, Henricus Jacobus Cornelis Gommeren, Rachel Elizabeth Montejo, Tina Amick Waller
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Patent number: 7435342Abstract: A dialysate regeneration chamber is provided. In one embodiment, the dialysate regeneration chamber may include a toxin trap configured to selectively trap toxins and repel select cations.Type: GrantFiled: December 22, 2004Date of Patent: October 14, 2008Assignee: Chemica Technologies, Inc.Inventor: Takuji Tsukamoto
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Patent number: 7422121Abstract: The invention relates to a method for producing a sterilisation system, especially for sterilising drinking water and water for industrial use. The precious metal surface of a base material containing precious metal is initially oxidised in an acidic solution and subsequently treated in an aqueous saline solution. The invention also relates to a sterilisation system and use thereof.Type: GrantFiled: April 17, 2003Date of Patent: September 9, 2008Assignee: PaSta AktiengesellschaftInventor: Heinz W. Stadelmann
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Publication number: 20080190843Abstract: It is intended to provide a polymer for coating a leukocyte removal filter material which is excellent in the capability of removing leukocytes. It is further intended to provide a filter whereby both of leukocytes and platelets can be highly efficiently removed from a blood product containing leukocytes and platelets. The above objects can be achieved by using a polymer for coating a leukocyte removal filter material which comprises a unit originating in a hydrophobic polymerizable monomer, a unit originating in a polymerizable monomer containing a basic nitrogen-containing part, and a unit originating in a polymerizable monomer containing a protonic neutral hydrophilic part.Type: ApplicationFiled: August 11, 2005Publication date: August 14, 2008Inventors: Hitoshi Mizomoto, Bradley Mark
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Patent number: 7407742Abstract: Provided are a plasma or serum separator and a plasma or serum sampling method capable of isolating plasma or serum with good efficiency from a small amount of blood without using a centrifuge and without causing leakage of a blood cell component or hemolysis, and in addition, capable of isolating and collecting plasma or serum from a whole blood test sample in a short time with simplicity in a blood test in the scene of medical care requiring an instant treatment any time such as an emergency test, home-use test or the like.Type: GrantFiled: February 25, 2003Date of Patent: August 5, 2008Assignee: Sanko Junyaku Co., Ltd.Inventor: Eiji Ikeda
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Patent number: 7370766Abstract: A filter cloth whose underside comprises substantially parallel, additional yarns 8 that are thicker than the rest of the yarns of the cloth, substantially parallel channels 9 being formed between the yarns, wherein filtered liquid passed through the cloth is allowed to flow in the direction of the surface of a filtering element 10 between the filtering portion of the cloth and the surface of the element. The invention further relates to a filtering module manufactured from the filter cloth of the invention.Type: GrantFiled: November 14, 2003Date of Patent: May 13, 2008Assignee: Tamfelt OYJ ABPInventor: Aulis Perälä
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Patent number: 7344035Abstract: A fabric is disclosed which is suitable for use in the manufacture of particulate filters for use in high heat environments, together with a method for making the high heat filter fabric. The filter fabric has a sliver knit pile construction, and may be manufactured on conventional knitting machines. Both the yarn used in the backing of the high heat filter fabric and the fibers used for the pile of the high heat filter fabric are made of aramid materials, and the high heat filter fabric is suitable for use in high temperatures such as those associated with coal-fired power plants.Type: GrantFiled: June 12, 2004Date of Patent: March 18, 2008Assignee: Siny Corp.Inventors: Daniel L. Koopmann, Cecil V. Kaylor
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Patent number: 7311209Abstract: A filter material has one or more plies of fiber layers, in particular for the production of filter bags and filter cones for infused beverages, the at least one fiber layer containing fibers or microcapsules having phase change material. Paraffinic hydrocarbons can be used as the phase change material.Type: GrantFiled: September 9, 2004Date of Patent: December 25, 2007Assignees: Outlast Technologies, Inc, Schoeller + Hoesch GmbH & Co. KGInventors: Martin Bentz, Danny H. Meger
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Publication number: 20070289914Abstract: A filter that reduces microorganisms or chlorine from tap water and has at least one membrane that has at least one layer. The at least one layer is a fabric layer sputtering-coated with silver particles.Type: ApplicationFiled: June 16, 2006Publication date: December 20, 2007Inventor: Chih-Cheng Yang
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Patent number: 7296691Abstract: Carbon or activated carbon nanofibers are made from fibrillated nanofibers having a Canadian Standard Freeness of less than about 100, and/or a fiber diameter of less than or equal to about 400 nm. BET surface areas are greater than about 800 m2/g The fibrillated nanofibers can be made into a precursor paper and subjected to heat treatment to form carbon or activated carbon nanofiber sheets. A method of making is disclosed wherein carbonization occurs at a temperature of less than about 600° C. Activation occurs at temperatures greater than about 875° C. in less than or equal to about 30 minutes in an oxidizing atmosphere. Single step carbonization and activation in an oxidizing atmosphere is also disclosed. The carbon nanofibers or structures made therefrom are useful as filter media providing efficient adsorption and interception of microbiological contaminants due to the microporous carbon nanofiber structure.Type: GrantFiled: July 18, 2003Date of Patent: November 20, 2007Assignee: KX Technologies LLCInventor: Evan E. Koslow