Pore Forming Patents (Class 106/122)
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Patent number: 7618485Abstract: Biodegradable compositions that include a foamed gelling hydrocolloid system to which a firming agent and a fibrous material, with or without other optional components, are added. When articles prepared from such compositions are coated with a suitable coating, they are impervious to boiling water and able to withstand microwave heating.Type: GrantFiled: June 16, 2006Date of Patent: November 17, 2009Assignee: The Biodegradable Technologies General PartnershipInventor: Donald W. Renn
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Patent number: 7528089Abstract: The present invention includes a microporous or mesoporous composition of matter in which the composition is formed continuously or semi-continuously in a heated reactor zone, including a rotary calciner or a rotary screw as a means for conveying the synthesis mixture, at a temperature between 200° C. and 500° C. with a residence time less than 24 hours. The reagents are solid and liquid reagents in which the solid reagents have a weight percent between 45% and 98% of the total reagents. The invention also includes a continuous or semi-continuous process for the hydrothermal manufacture of the microporous or mesoporous composition.Type: GrantFiled: October 15, 2004Date of Patent: May 5, 2009Assignee: ExxonMobil Research and Engineering CompanyInventors: Ivy D. Johnson, Kirk D. Schmitt, Steven T. Ragomo, Stephen G. Casmer
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Publication number: 20090011216Abstract: A method of making a molded resin product includes the steps of (i) providing a plurality of liquid resin components that each include a reaction monomer for a resin, wherein at least one of the liquid resin components includes a catalyst, at least one of the liquid resin components includes an activator, and at least one of the liquid resin components includes thermally expandable microspheres, (ii) mixing the liquid resin components; and (iii) injecting the mixed liquid resin components into a mold at a predetermined temperature. The predetermined temperature is at least 10° C. lower than an expansion start temperature of the thermally expandable microspheres.Type: ApplicationFiled: July 2, 2007Publication date: January 8, 2009Inventors: Youji Suzuki, Takeshi Kato
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Patent number: 7461512Abstract: The present invention relates to a castable, aerogel-based, ultra-low thermal conductivity opacified insulation to suppress sublimation. More specifically, the present invention relates to an aerogel opacified with various opacifying or reflecting constituents to suppress sublimation and provide thermal insulation in thermoelectric modules. The opacifying constituent can be graded within the aerogel for increased sublimation suppression, and the density of the aerogel can similarly be graded to achieve optimal thermal insulation and sublimation suppression.Type: GrantFiled: October 29, 2004Date of Patent: December 9, 2008Assignee: California Institute of TechnologyInventors: Jeff S. Sakamoto, G. Jeffrey Snyder, Thierry Calliat, Jean-Pierre Fleurial, Steven M. Jones, Jong-Ah Palk
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Patent number: 7427321Abstract: Disclosed are formulations adapted to form a foamed cementitious composition, the foamed cementitious composition itself, a method of forming a hydraulic binder foam, and a method of conveying and applying the resulting foam to a substrate. A pumpable cementitious slurry is formed, the slurry is mixed with a gas such as air, and is subjected to mechanically created turbulence to generate gas bubbles and create a foam, which preferably is stabilized by a foam stabilizing agent such as polyvinyl alcohol present in the slurry. The foam is then conveyed to a nozzle or other suitable dispense point from which it is applied, for example sprayed, preferably uniformly, onto a substrate to be coated. Prior to dispensing, a set accelerator is preferably injected, which causes the foam to gel, which in turn improves the hangability of the product on a substrate. The spray material adheres to the substrate and hardens to form an insulative coating on the substrate.Type: GrantFiled: September 30, 2003Date of Patent: September 23, 2008Assignee: W.R. Grace & Co. -Conn.Inventors: Dennis M. Hilton, Michael D. Morgan, Robert Paul, Karl D. Taub, Robert S. Young, Ricky N. Bastarache
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Publication number: 20080115692Abstract: Methods are provided that include a method comprising: providing a foamed resin composition comprising a resin, a foaming agent, a compressible gas, and an aqueous fluid; and introducing the foamed resin composition into at least a portion of a subterranean formation. Additional methods are provided.Type: ApplicationFiled: November 17, 2006Publication date: May 22, 2008Inventors: Thomas D. Welton, Philip D. Nguyen
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Publication number: 20080105167Abstract: A slurry composition comprising an alkaline metal oxide, a chloride or phosphate salt, water, glass beads and a foaming agent. A foamed slurry comprising magnesium oxide, water, a chloride or phosphate salt, and glass beads, wherein the slurry has a density of from about 4 to about 12 pounds per gallon. A foamed slurry comprising magnesium oxide, water, a chloride or phosphate salt, and beads, wherein the slurry has a density of from about 4 to about 12 pounds per gallon and the set slurry is acid soluble.Type: ApplicationFiled: November 3, 2006Publication date: May 8, 2008Inventors: Ashok K. Santra, Christopher L. Gordon
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Patent number: 7354984Abstract: To efficiently dry it, a nonionic alkylene oxide-type water-soluble resin is put into a container, then the container is degassed to a prescribed vacuum degree which is maintained while a dry gas having a dew point not higher than prescribed is introduced into the container at a rate not lower than prescribed. Minor volatiles are efficiently removed from the resin in an evaporation tank having a stirring blade. For protecting the dried resin from water, a dry gas is introduced into and air is purged from an empty packaging container whereafter the resin is charged into the container is sealed. By controlling solvent content and visocity of the resin and loading it into a temperature-controlled transportation container and/or unloading it out of the transportation container by the use of a pump, good subsquent processability of the resin and prevention of deterioration thereof are ensured.Type: GrantFiled: February 18, 2005Date of Patent: April 8, 2008Assignees: Dai-ichi Kogyo Seiyaku Co., Ltd., Nippon Shokubai Co., Ltd.Inventors: Michiyuki Kono, Manabu Kikuta, Masaki Tezuka, Hiroshi Tanaka, Takao Yokohashi, Takao Nishihata, Kazuhiko Murata, Taketo Toba, Fumihide Tamura, Ritsuo Kitada
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Publication number: 20070224436Abstract: A film forming composition comprises a compound having a cage structure and a thermally decomposable compound, an insulating film is formed by using the film forming composition and an electronic device comprises the insulating film.Type: ApplicationFiled: March 22, 2007Publication date: September 27, 2007Applicant: FUJIFILM CorporationInventor: Hidetoshi Hiraoka
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Patent number: 7238729Abstract: This disclosure describes the first viable non-enzyme protein encapsulated within an aerogel. In this, a large excess of cyt c is added to a commercial buffered Au sol solution ( ) which results in the formation of a gold˜protein-protein superstructure in the absence of separation techniques which destroy the superstructure. The gold˜protein-protein superstructure is then nanoglued into a silica framework during the sol to gel transition. To form the gel, the Au˜cyt. c superstructure in buffered medium is added to a silica sol and the composite gels are washed with acetone followed by liquid carbon dioxide and then supercritically dried to form the aerogel. The biocomposite aerogels have a multiplicity of applications particularly in the realm of sensing and energy transformation.Type: GrantFiled: August 18, 2004Date of Patent: July 3, 2007Assignee: The United States of America as Represented by the Secretary of the NavyInventors: Debra R. Rolison, Jean M. Wallace, Jeremy J. Pietron, Jane K. Rice, Rhonda M. Stroud
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Patent number: 7198823Abstract: A siloxane-based resin having germanium and an interlayer insulating film for a semiconductor device formed using the same. The siloxane-based resins have a low dielectric constant in addition to excellent mechanical properties so that they are useful materials for an insulating film between interconnecting layers of a semiconductor device.Type: GrantFiled: January 31, 2006Date of Patent: April 3, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Sang Kyun Lee, Jong Baek Seon
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Patent number: 7175701Abstract: Disclosed is a foam comprising a matrix and cells included in the matrix. The matrix comprises denatured protein and at least one compound selected from the group consisting of alginic acid, salts thereof, and derivatives of alginic acid.Type: GrantFiled: September 27, 2005Date of Patent: February 13, 2007Assignee: Kabushiki Kaisha ToshibaInventors: Yumiko Oyasato, Kentaro Yoshida
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Patent number: 7144522Abstract: A curable coating composition for forming a thermal insulating layer, the composition comprising: (a) highly porous particles of a material obtained by drying a wet sol-gel, the particles having a porosity of at least 80% and a particle size in the range from 5 ?m to 4.Type: GrantFiled: November 12, 2004Date of Patent: December 5, 2006Inventors: G. Stuart Burchill, Jr., Peter Wachtel
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Patent number: 7144453Abstract: A composition for preparing a porous interlayer dielectric thin film which includes a saccharide or saccharide derivative, a thermo-stable organic or inorganic matrix precursor, and a solvent for dissolving the two solid components. Also provided is a dielectric thin film having evenly distributed nano-pores with a diameter of less than 50 ?, which is required for semiconductor devices.Type: GrantFiled: October 29, 2003Date of Patent: December 5, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Jin Heong Yim, Yi Yeol Lyu, Jung Bae Kim, Kwang Hee Lee
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Patent number: 7109137Abstract: The present invention provides a method for making a microporous ceramic material and includes the steps of (a) preparing a starting material for firing comprising a nonoxide ceramic precursor containing silicon as an essential component; (b) heating the starting material for firing in an atmosphere containing at least 1 mol % of hydrogen so as to form microporous ceramic product; and (c) cooling the microporous ceramic product.Type: GrantFiled: April 27, 2005Date of Patent: September 19, 2006Assignees: Noritake Co., Limited, Chubu Electric Power Co., Inc.Inventors: Balagopal N. Nair, Yasunori Ando, Hisatomi Taguchi, Shigeo Nagaya, Kiyoshi Komura
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Patent number: 7011702Abstract: An aqueous air foam comprising a non-crosslinked cellulose ether selected from C1–C3-alkyl celluloses, C1–C3-alkylhydroxy-C1–3-alkyl celluloses, hydroxy-C1–3-alkyl celluloses, or mixed hydroxy-C1–C3-alkyl celluloses, the foam having quality FQ of from 60 to 97 percent and the foam quality being defined as FQ (%)=(air volume+fluid volume)×100).Type: GrantFiled: August 23, 2002Date of Patent: March 14, 2006Assignee: Dow Global Technologies Inc.Inventors: Paul J. Sheskey, Colin M. Keary
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Patent number: 6911484Abstract: The invention is a decorating medium, system and method for producing relief art on substrate surfaces. The decorating medium is an acrylic emulsion based medium containing an expandable polymer which expands the medium upon heating. The acrylic emulsion is produced with a mixture of an acrylic binder and an acrylic thickener or a cellulosic thickener combined in the appropriate range to obtain a medium rheology suitable for controlled application of the medium to the substrate surfaces. The decorating medium is applied to a substrate surface in a desired pattern either directly from a storage bottle or tube equipped with a nozzle or with an applicator such as a brush, a sponge, a knife or spatula. The desired pattern is achieved by free hand or by using a stencil or mask. After the decorating medium is applied to the surface of the substrate in the desired pattern, the medium is cured and heated. The heat causes the medium to expand and creates the relief art on the surface of the substrate.Type: GrantFiled: July 25, 2000Date of Patent: June 28, 2005Assignee: Earlychildhood.com LLCInventor: Joel Goobich
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Patent number: 6903039Abstract: The present invention provides a method for making a microporous ceramic material and includes the steps of (a) preparing a starting material for firing comprising a nonoxide ceramic precursor containing silicon as an essential component; (b) heating the starting material for firing in an atmosphere containing at least 1 mol % of hydrogen so as to form microporous ceramic product; and (c) cooling the microporous ceramic product.Type: GrantFiled: February 19, 2003Date of Patent: June 7, 2005Assignees: Noritake Co., Limited, Chubu Electric Power Co., Inc.Inventors: Balagopal N. Nair, Yasunori Ando, Hisatomi Taguchi, Shigeo Nagaya, Kiyoshi Komura
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Patent number: 6890641Abstract: In accordance with the present invention, compositions and methods are provided in which the mechanical strength and durability of a precursor material having a plurality of pores is increased by a) providing a precursor material; b) treating the precursor material to form a nanoporous aerogel, preferably by using a supercritical drying process; c) providing a blending material having a reinforcing component and a volatile component; d) combining the nanoporous aerogel and the blending material to form an amalgamation layer; and e) treating the amalgamation layer to increase the mechanical strength of the layer by a substantial amount and to ultimately form a low dielectric material that can be utilized in various applications.Type: GrantFiled: July 8, 2003Date of Patent: May 10, 2005Assignee: Honeywell International Inc.Inventors: Shyama Mukherjee, Roger Leung, Kreisler Lau
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Patent number: 6846354Abstract: The invention describes a process for preparing a warm mix asphalt composition by mixing an aggregate grain material with a soft binder, and adding a hard binder to the mixed aggregate grain material. The hard binder is foamed in a foaming process before it is introduced to the mixed grained aggregate material. A system for preparing the warm mix asphalt composition comprising a drying drum for heating and drying the aggregate component, a mixing mill for mixing the asphalt components and a mix storage silo, where the system also includes foam production facilities for foaming the hard binder before introduction to the mixing mill, is also disclosed.Type: GrantFiled: December 1, 2003Date of Patent: January 25, 2005Assignee: Kolo Veidekke A.S.Inventors: Olle R. Larsen, Carl . Robertus
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Publication number: 20040244646Abstract: The invention describes a process for preparing a warm mix asphalt composition by mixing an aggregate grain material with a soft binder, and adding a hard binder to the mixed aggregate grain material. The hard binder is foamed in a foaming process before it is introduced to the mixed grained aggregate material. A system for preparing the warm mix asphalt composition comprising a drying drum for heating and drying the aggregate component, a mixing mill for mixing the asphalt components and a mix storage silo, where the system also includes foam production facilities for foaming the hard binder before introduction to the mixing mill, is also disclosed.Type: ApplicationFiled: December 1, 2003Publication date: December 9, 2004Applicant: KOLO VEIDEKKE A.S.Inventors: Olle R. Larsen, Carl Robertus
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Patent number: 6824776Abstract: This disclosure describes the first viable non-enzyme protein encapsulated within an aerogel. In this, a large excess of cyt. c is added to a commercial buffered Au sot solution ( ) which results in the formation of a gold˜protein-protein superstructure in the absence of separation techniques which destroy the superstructure. The gold˜protein-protein superstructure is then nanoglued into a silica framework during the sol to gel transition. To form the gel, the Au-cyt. c superstructure in buffered medium is added to a silica sol and the composite gels are washed with acetone followed by liquid carbon dioxide and then supercritically dried to form the aerogel. The biocomposite aerogels have a multiplicity of applications particularly in the realm of sensing and energy transformation.Type: GrantFiled: April 16, 2003Date of Patent: November 30, 2004Assignee: The United States of America as represented by the Secretary of the NavyInventors: Debra R. Rolison, Jean M. Wallace, Jeremy J. Pietron, Jane K. Rice, Rhonda M. Stroud
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Patent number: 6806298Abstract: A sprayable composition and a method of protecting material with the composition is disclosed. The composition comprises a bulking/setting material, a water soluble polymer and water to provide a cover layer which, after spraying, is tough, flexible and water-repellent. Other materials such as clay, fibrous material, a foam producing agent and a hardening retarder can be included in the composition. The composition is effective as a cover layer over material such as soil, refuse at a dump site, stockpiled material, a temporary cover for remediation sites, or tire piles.Type: GrantFiled: July 27, 2000Date of Patent: October 19, 2004Assignee: New Waste Concepts, Inc.Inventors: Thomas J. Nachtman, John H. Hull, Patrick O'Shea
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Patent number: 6797051Abstract: A more controllable fibrous acoustic ceiling patch or textured material in the form of a sprayable composition includes a base, a filler, an adhesive binder, an anti-foaming agent, a suspension agent, and fibrous materials. The more controllable acoustic ceiling patch is storable and dispensable from a pressurized dispenser having a delivery nozzle. An aerosol system with a spray nozzle is included on the container for selective discharge of the textured material onto a prepared patch area, which may be on a drywall or support panel so as to match and blend with the surrounding acoustic ceiling surface area in order to provide a continuous and unbroken coextensive surface texture of mechanically and visually matched material.Type: GrantFiled: February 22, 2002Date of Patent: September 28, 2004Assignee: Spraytex, Inc.Inventor: John R. Woods
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Patent number: 6780230Abstract: Disclosed are formulations adapted to form a foamed cementitious composition, the foamed cementitious composition itself, a method of forming a hydraulic binder foam, and a method of conveying and applying the resulting foam to a substrate. A pumpable cementitious slurry is formed, the slurry is mixed with a gas such as air, and is subjected to mechanically created turbulence to generate gas bubbles and create a foam, which preferably is stabilized by a foam stabilizing agent such as polyvinyl alcohol present in the slurry. The foam is then conveyed to a nozzle or other suitable dispense point from which it is applied, for example sprayed, preferably uniformly, onto a substrate to be coated. Prior to dispensing, a set accelerator is preferably injected, which causes the foam to gel, which in turn improves the hangability of the product on a substrate. The spray material adheres to the substrate and hardens to form an insulative coating on the substrate.Type: GrantFiled: January 11, 2002Date of Patent: August 24, 2004Assignee: W.R. Grace & Co. -Conn.Inventors: Dennis M. Hilton, Michael D. Morgan, Robert Paul, Karl D. Taub, Robert S. Young, Ricky N. Bastarache
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Patent number: 6756426Abstract: An improved material for use in resilient conforming pads, cushions, impact resistance padding and the like is described. The material comprises a liquid or semi-solid matrix phase and an expanded Perlite included phase. The material is useful for providing low weight contour conforming resilent padding for garments, athletic equipment, prosthetic devices, surgical, medical or vehicular cushions, positioning devices, mattresses, impact protective padding and the like.Type: GrantFiled: November 27, 2002Date of Patent: June 29, 2004Assignee: I-Tek, Inc.Inventors: Theodore B. Brother, Edward J. Ellis
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Patent number: 6737224Abstract: A method for preparing thin supported films by vacuum is disclosed. The method results in a substrate with windows. The windows are cutout (etched) areas that are covered by a thin film. The method for creating the substrate with thin film covering requires: masking off one surface of the metal substrate with a maskant; placing the metal substrate under a vacuum; treating the unmasked surface by plasma etching; coating the treated surface with a film while still under vacuum; removing substrate from vacuum; remove the masking; treating the previously masked side with photo resist; exposing the side treated with photo resist to artwork of a desired pattern; exposing the substrate to a suitable solution; chemically etching in areas selectively exposed by the artwork; neutralizing the substrate; and removing the etched parts from the substrate.Type: GrantFiled: April 17, 2001Date of Patent: May 18, 2004Inventor: Jeffrey Stewart
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Patent number: 6712895Abstract: A method of producing a bituminous foam includes supplying a bitumen in water emulsion from a tank (2) into primary and secondary heating circuits (8, 34), whereby the emulsion is heated (via heating coils 12 and 12′) and its pressure raised such that, on discharge to ambient conditions via outlet pipes (30 or 30′), the emulsion foams as water evaporates therefrom.Type: GrantFiled: June 3, 2002Date of Patent: March 30, 2004Assignee: Totalfinaelf Bitumen LimitedInventor: Leslie Hoad
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Patent number: 6699561Abstract: An activated carbon molded body, more particularly in honeycomb form and for use as an adsorption filter, can be produced from a mixture including activated carbon, water, novolak powder, clay, cellulose ether, liquid starch, wax, polyacrylamide and soap, by a procedure involving thoroughly mixing the constituents, extruding the mixture to form a monolithic molded body and cutting same to size, drying the body and effecting pyrolysis thereof. The adsorption filter produced therefrom can be regenerated by electrical heating under specified conditions.Type: GrantFiled: January 31, 2002Date of Patent: March 2, 2004Assignee: Helsa-Werke Helmut Sandler GmbH & Co. KGInventor: Thomas Wolff
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Patent number: 6646018Abstract: An anti-lumping agent for use with expandable polystyrene beads is disclosed. The expandable polystyrene beads comprise a styrene or styrene derivative polymer in combination with a blowing agent. Typical blowing agents are C3-C6 hydrocarbons, with pentane being especially preferred. The anti-lumping agents include block copolymers formed from blocks of ethylene oxide and propylene oxide. Preferably, the copolymers have a number average molecular weight of from about 4,000 to 15,000, and a hydrophilic-lipophilic balance number of from about 16 to 29. The anti-lumping agents significantly reduce the lumping potential of the expandable polystyrene beads, especially when they are expanded to low densities of from about 1.5 to 0.75 lbs. per cubic foot, and more preferably to densities of from about 1.2 to 0.85.Type: GrantFiled: September 18, 2002Date of Patent: November 11, 2003Assignee: BASF CorporationInventors: Ronald Gabbard, Bernhard Schmied, Eric R. Weisenbach, Robert D. Ober
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Patent number: 6641657Abstract: Porous inorganic silica foam compositions are derived from water soluble silicate precursors and swollen non-ionic polymer templates are described. The compositions are useful as catalyst supports and as catalysts in hydrocarbon cracking and organic reactions, among other applications.Type: GrantFiled: April 25, 2002Date of Patent: November 4, 2003Assignee: Board of Trustees of Michigan State UniversityInventors: Thomas J. Pinnavaia, Thomas R. Pauly, Seong-Su Kim
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Patent number: 6627669Abstract: In accordance with the present invention, compositions and methods are provided in which the mechanical strength and durability of a precursor material having a plurality of pores is increased by a) providing a precursor material; b) treating the precursor material to form a nanoporous aerogel, preferably by using a supercritical drying process; c) providing a blending material having a reinforcing component and a volatile component; d) combining the nanoporous aerogel and the blending material to form an amalgamation layer; and e) treating the amalgamation layer to increase the mechanical strength of the layer by a substantial amount, and to ultimately form a low dielectric material that can be utilized in various applications.Type: GrantFiled: July 3, 2002Date of Patent: September 30, 2003Assignee: Honeywell International Inc.Inventors: Shyama Mukherjee, Roger Leung, Kreisler Lau
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Patent number: 6613424Abstract: The present invention provides for an acoustically absorbent porous panel that is both rigid and resistant to sagging caused by moisture. The acoustically absorbent porous panel is comprised of at least two layers. The first layer is a facing layer formed from a cured aqueous foamed cementitious material. The foamed cementitious material comprises on a wet basis about 53% to about 68% by weight cement, about 17% to about 48% by weight water, about 0.05% to about 5% by weight fiber, and about 0.01% to about 10% by weight surfactant. Additionally, pores distributed within the cured material comprising about 75% to about 95% by volume of the material. The second layer is a backing layer that is affixed to the facing layer.Type: GrantFiled: September 15, 2000Date of Patent: September 2, 2003Assignee: AWI Licensing CompanyInventors: Dean L. Putt, Peter A. Christie, Andrea M. Moser, Marsha Stalker Bischel, Anthony L. Wiker
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Patent number: 6589328Abstract: The invention provides sponges (foams) produced from hydrocolloids by the expansion of gels of these. The foams have properties which can be varied, such as water absorption, biodegradibility, pore size and structure. Edible products can be produced which may contain an edible plasticizer, a sugar or sugar substitute and possibly also a flavoring agent or taste enhancer. The novel sponges are produced by preparing a gel of a hydrocolloid, and either sealing it in a closed vessel with a liquid of similar composition, pressurizing the vessel and abruptly releasing the pressure, followed by freeze drying, or by incorporating in such a gel a suitable microorganism, such as a yeast and inducing fermentation in the presence of a suitable nutrient medium, so that the carbon dioxide formed results in the expansion and foam formation, which is processed to the final product. The sponges-foams of the invention are such, that the initial network of the gel is maintained.Type: GrantFiled: June 18, 1997Date of Patent: July 8, 2003Assignee: Yissum Research Development Company of The Hebrew University of JerusalemInventor: Amos Nussinovitch
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Patent number: 6569405Abstract: Microcapsules are prepared by a process comprising the steps of (i) spray-drying a solution or dispersion of a wall-forming material in order to obtain intermediate microcapsules and (ii) reducing the water-solubility of at least the outside of the intermediate microcapsules. Suitable wall-forming materials include proteins such as albumin and gelatin. The microcapsules have walls of 40-500 nm thick and are useful in ultrasonic imaging. The control of median size, size distribution and degree of insolubilization and cross-linking of the wall-forming material allows novel microsphere preparations to be produced.Type: GrantFiled: September 28, 1999Date of Patent: May 27, 2003Assignee: Quadrant Healthcare (UK) LimitedInventors: Andrew D. Sutton, Richard A. Johnson, Peter J. Senior, David Heath
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Patent number: 6541528Abstract: Flexible polyurethane, polyacrylic and polybutadiene foams can be obtained with cyclopentane as a blowing agent and are useful as coatings for leather or leather substitutes.Type: GrantFiled: August 13, 1998Date of Patent: April 1, 2003Assignee: Clariant Finance (BVI) LimitedInventor: Werner Walther
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Patent number: 6541107Abstract: Nanoporous silicone resins and silicone resin films having low dielectric constants and a method for preparing such nanoporous silicone resins. The silicone resin comprises the reaction product of a mixture comprising (A) 15-70 mol % of a tetraalkoxysilane described by formula Si(OR1)4, where each R1 is an independently selected alkyl group comprising 1 to about 6 carbon atoms, (B) 12 to 60 mol % of a hydrosilane described by formula HSiX3, where each X is an independently selected hydrolyzable substituent, (C) 15 to 70 mole percent of an organotrialkoxysilane described by formula R2Si(OR3)3, where R2 is a hydrocarbon group comprising about 8 to 24 carbon atoms or a substituted hydrocarbon group comprising a hydrocarbon chain having about 8 to 24 carbon atoms and each R3 is an independently selected alkyl group comprising 1 to about 6 carbon atoms; in the presence of (D) water, (E) hydrolysis catalyst, and (F) organic solvent for the reaction product.Type: GrantFiled: October 25, 1999Date of Patent: April 1, 2003Assignee: Dow Corning CorporationInventors: Bianxiao Zhong, Russell Keith King, Kyuha Chung, Shizhong Zhang
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Patent number: 6454787Abstract: A hemostatic device formed of collagen particles and methods for producing and using the hemostatic device to control bleeding are provided. The collagen particles of the hemostatic device have a hemostatic activity that is equivalent to the hemostatic activity of the collagen particles from which the hemostatic device is formed. More preferably, the hemostatic devices are formed of Avitene® flour and the collagen particles of the hemostatic devices of the invention have a hemostatic activity equivalent to the hemostatic activity of Avitene® flour. The hemostatic devices optionally include hemostatic agents and/or therapeutic agents, to further promote hemostasis and wound healing.Type: GrantFiled: December 11, 1998Date of Patent: September 24, 2002Assignee: C. R. Bard, Inc.Inventors: Francis B. Maddalo, Mark V. Iampietro, Stephen N. Eldridge, Robert D. Torgerson
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Patent number: 6444715Abstract: In accordance with the present invention, compositions and methods are provided in which the mechanical strength and durability of a precursor material having a plurality of pores is increased by a) providing a precursor material; b) treating the precursor material to form a nanoporous aerogel, preferably by using a supercritical drying process; c) providing a blending material having a reinforcing component and a volatile component; d) combining the nanoporous aerogel and the blending material to form an amalgamation layer; and e) treating the amalgamation layer to increase the mechanical strength of the layer by a substantial amount, and to ultimately form a low dielectric material that can be utilized in various applications.Type: GrantFiled: June 6, 2000Date of Patent: September 3, 2002Assignee: Honeywell International Inc.Inventors: Shyama Mukherjee, Roger Leung, Kreisler Lau
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Patent number: 6419830Abstract: A polymeric resin is disclosed in the form of beads or particles having a coating thereon which renders the resin blood compatible. The resin comprises divinylbenzene monomer which has a porosity, pore size, and surface area suitable for absorbtion of unhealthy components of blood, such as &bgr;-2-microglobulin.Type: GrantFiled: September 27, 2001Date of Patent: July 16, 2002Assignee: The Dow Chemical CompanyInventors: Robert M. Strom, Daniel J. Murray
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Patent number: 6409817Abstract: Disclosed is a rigid fine-celled light-weight foam composition and a method of producing it which has improved retention of liquids by absorption/adsorption which improves the thermal insulation and fire retardant properties of the fine-celled foam particularly suited for use in double walled tanks and hollow canopies, building panels, profiles, and the like.Type: GrantFiled: May 8, 2000Date of Patent: June 25, 2002Assignee: Agritec, Inc.Inventor: Douglas K. Stephens
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Patent number: 6338801Abstract: A polymeric resin is disclosed in the form of beads or particles having a coating thereon which renders the resin blood compatible. The resin comprises divinylbenzene monomer which has a porosity, pore size, and surface area suitable for absorbtion of unhealthy components of blood, such as &bgr;-2-microglobulin.Type: GrantFiled: December 22, 2000Date of Patent: January 15, 2002Assignee: The Dow Chemical CompanyInventors: Robert M. Strom, Daniel J. Murray
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Publication number: 20010045177Abstract: The invention provides a sterile freeze-dried sponge, wherein at least 80% by weight of the sponge consists of collagen and oxidized regenerated cellulose in the weight ratio 60:40 to 40:60, wherein the sponge has a dry tensile strength of more than 3N and/or a wet tensile strength of more than 1 N. Preferably, the collagen has a degree of denaturation less than 20% and the sponge is substantially free of chemical cross-links.Type: ApplicationFiled: February 27, 2001Publication date: November 29, 2001Inventors: Wil Harvey, Peter Van Leeuwen, Tom Hyland, Will Aitken
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Patent number: 6309772Abstract: A membrane-electrode unit for polymer-electrolyte fuel cells. The membrane-electrode unit consists of a polymer electrolyte membrane and porous reaction layers applied to both sides comprising a catalyst and a proton-conducting polymer, a so-called ionomer. The membrane-electrode unit is characterized in that one part A1 of the catalyst of the reaction layers is saturated with the ionomer and is embedded in the ionomer whereas one part A2 of the catalyst is kept free from the ionomer, where the parts A1 and A2 are in a weight ratio of 1:1 to 20:1.Type: GrantFiled: March 22, 1999Date of Patent: October 30, 2001Assignee: Degussa AGInventors: Ralf Zuber, Knut Fehl, Karl-Anton Starz, Udo Stenke
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Patent number: 6309454Abstract: The invention provides a sterile freeze-dried sponge, wherein at least 80% by weight of the sponge consists of collagen and oxidized regenerated cellulose in the weight ratio 60:40 to 40:60, wherein the sponge has a dry tensile strength of more than 3N and/or a wet tensile strength of more than 1 N. Preferably, the collagen has a degree of denaturation less than 20% and the sponge is substantially free of chemical cross-links. The invention also provides methods for the manufacture of sponges according to the invention.Type: GrantFiled: May 12, 2000Date of Patent: October 30, 2001Assignee: Johnson & Johnson Medical LimitedInventors: Wil Harvey, Peter Van Leeuwen, Tom Hyland, Will Aitken
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Patent number: 6287375Abstract: A thermally conductive, pitch based foam composite having a particulate content. The particulate alters the mechanical characteristics of the foam without severely degrading the foam thermal conductivity. The composite is formed by mixing the particulate with pitch prior to foaming.Type: GrantFiled: September 21, 1999Date of Patent: September 11, 2001Assignee: UT-Battelle, LLCInventor: James W. Klett
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Patent number: 6280515Abstract: A process producing a foamed water-based adhesive is presented involving forming a foamable adhesive composition containing a polysaccharide modified with an alkyl succinic anhydride and then applying energy to said foamable adhesive composition to produce an adhesive foam.Type: GrantFiled: June 23, 2000Date of Patent: August 28, 2001Assignee: National Starch and Chemical Investment Holding CorporationInventors: David W. Lydzinski, Edmund W. Fig
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Patent number: 6280514Abstract: A process for producing an aqueous-based foamed polysaccharide is presented. The process involves combining a polysaccharide, a foam generator and water, then applying energy to the combination to produce a foamed adhesive.Type: GrantFiled: June 23, 2000Date of Patent: August 28, 2001Assignee: National Starch and Chemical Investment Holding CorporationInventors: David W. Lydzinski, Christian E. Russell
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Patent number: 6228895Abstract: This invention relates to compositions, paper, thermoplastic sheets, and medical paper containing cellulose ester alkylpolyglycoside (APG) or a mixture of APG and polyether glycol, and, optionally, cellulose. The process of incorporating APG or a mixture of APG and polyether glycol in paper composed of cellulose ester fibers and cellulose fibers and to calendaring of such paper is also disclosed.Type: GrantFiled: November 30, 1998Date of Patent: May 8, 2001Assignee: Eastman Chemical CompanyInventors: Charles Michael Buchanan, Eric Eugene Ellery, Matthew Davie Wood
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Patent number: RE38773Abstract: The present invention involves the synthesis of a series of amylose (starch) derivatives with various degrees of substitution and amylose/amylopectin ratios. These chains are chemically crosslinked and then mechanically deformed (stretched) to produce a biodegradable and mechanically superior material. Specifically, the process consists of chemically modifying starch into starch derivatives such as starch ethers, starch esters and starch carbamates. The polymers have a percentage degree of substitution of from about 35% to about 95% (degree of substitution is from about 1.05 to about 2.85) and preferably have a percentage degree of substitution of from about 65% to about 90% (degree of substitution is from about 1.95 to about 2.70). The starch derivatives are crosslinked to obtain crosslinked chains and processed into sheets, films, fibers, threads or other articles as known in the art.Type: GrantFiled: May 2, 2002Date of Patent: August 9, 2005Assignee: The University of CincinnatiInventors: James E. Mark, Brooke Zhao Peterson, Burak Eman, Ivet Bahar, Andrzej Kloczkowski