With Particulate Solid Patents (Class 516/11)
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Patent number: 11845838Abstract: Embodiments of organic peroxide formulations provide significant improvements in surface tackiness (often including tack-free surfaces) when curing elastomers in the presence of oxygen. The peroxide formulations may include, for example, one or more compounds selected from sulfur-containing compounds, organophosphite compounds, HALS (Hindered Amine Light Stabilizer) compounds, aliphatic allyl urethane compounds, and blends comprising nitroxides (e.g., 4-hydroxy-TEMPO) and quinones (e.g., mono-tert-butylhydroquinone).Type: GrantFiled: June 10, 2020Date of Patent: December 19, 2023Assignee: Arkema Inc.Inventors: Leonard H. Palys, Peter R. Dluzneski, William P. Pavlek, Alfredo Defrancisci, Feng-Jon Chang, Marina Despotopoulou, Michael B Abrams, Joseph M. Brennan, Isabelle Tartarin
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Patent number: 11707714Abstract: The disclosure provides devices, methods, and systems for treating reactive metals and other reactive species produced during operation of thermal solid-state gas generators. Thermal energy, which may be derived from the gas generation process, physical contact with the evolved gases, or a dedicated or shared heat source, is used to release a gaseous species that neutralizes the reactive species. In some embodiments, the neutralization reaction causes the release of additional product gas(es).Type: GrantFiled: May 6, 2022Date of Patent: July 25, 2023Assignee: Anasphere, Inc.Inventor: John A. Bognar
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Patent number: 11028315Abstract: The instant invention relates to surfactants having the following formula (I) wherein: each of Ra and Rb is a linear or branched, saturated or unsaturated, hydrocarbon chain, each of Rc and Rd is a alkyl chain having 1 to 10 carbon atoms, each of (E1) and (E2) is a divalent hydrocarbon radical, A is: a group a carboxylate group —COO? (optionally in all or part in the form —COOH); or a sulfonate group —SO3? (optionally in all or part in the form —SO3H). The invention also relate to the preparation of these surfactants and their use in oil extraction, especially in EOR applications.Type: GrantFiled: March 30, 2017Date of Patent: June 8, 2021Assignee: RHODIA OPERATIONSInventors: Olivier Back, Philippe Marion, Mikel Morvan
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Patent number: 10974201Abstract: A membrane for cultivating adherent or suspension cells, in particular adherent cells. The membrane permits adhesion and proliferation of the cells due to the irradiation of the wet or dry membrane with gamma or beta rays or an electron beam in a dose of from 12.5 to 175 kGy in the presence of oxygen. The resulting membrane may be used without any pre-treatment with surface-modifying substances. A method for preparing such an irradiated membrane for cultivating adherent or suspension cells. Methods of using such a membrane for cultivating adherent or suspension cells.Type: GrantFiled: September 23, 2009Date of Patent: April 13, 2021Assignee: Gambro Lundia ABInventors: Bernd Krause, Markus Neubauer, Joachim Loercher
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Patent number: 10793691Abstract: In one aspect, a foamable composition is disclosed, which comprises a base polymer, talc and a citrate compound blended with the base polymer. In some embodiments, the concentration of the talc in the composition is in a range of about 0.05% to about 25% by weight, e.g., in a range of about 2% to about 20%, or in a range of about 3% to about 15%, or in a range of about 5% to about 10%. Further, the concentration of the citrate compound in the composition can be, for example, in a range of about 0.05% to about 3% by weight, or in a range of about 0.02% to about 0.9% by weight, or in a range of about 0.03% to about 0.8% by weight, or in a range of about 0.04% to about 0.7% by weight, or in a range of about 0.05% to about 0.6% by weight.Type: GrantFiled: December 3, 2018Date of Patent: October 6, 2020Assignee: Cable Components Group, LLCInventors: Charles A. Glew, Nicolas M. Rosa, Charles M. Glew
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Patent number: 10577489Abstract: A process of foaming a polyolefin, e.g., polyethylene, composition using as a nucleator a combination of (A) azodicarbonamide, and (B) a mixture of (1) a first component consisting of at least one of citric acid and an alkali metal citrate, and (2) a second component consisting of at least one of an alkali metal citrate, a di-alkali metal hydrogen citrate, an alkali metal dihydrogen citrate and an alkali metal bicarbonate, with the proviso that the mixture is not solely composed of alkali metal citrate.Type: GrantFiled: May 8, 2015Date of Patent: March 3, 2020Assignee: Dow Global Technologies LLCInventors: Gangwei Sun, Mohamed Esseghir, Xianmin Xu, Chester J. Kmiec
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Patent number: 9675825Abstract: A new method for extinguishing fire is provided, characterized in that a pyrotechnic agent is used as a heat source (energy) and a power source (driving gas); during use, the pyrotechnic agent is ignited, and the high temperature generated by the combustion of the pyrotechnic agent is utilized to make a fire extinguishing composition produce a large amount of fire extinguishing substance, which is sprayed out together with the pyrotechnic agent, so as to achieve the purpose of extinguishing a fire. As compared with conventional aerosol fire extinguishing systems, gas fire extinguishing systems and water-based fire extinguishing systems, the fire extinguishing method of the present invention is more efficient and safer.Type: GrantFiled: September 7, 2011Date of Patent: June 13, 2017Assignee: Xi'an Westpeace Fire Technology Co., Ltd.Inventors: Hongbao Guo, Weipeng Zhang
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Patent number: 9583232Abstract: An electrically conductive rubber composition which can be efficiently and sufficiently foamed and crosslinked by means of a continuous crosslinking apparatus including a microwave crosslinking device and a hot air crosslinking device without generation of ammonia and carbon monoxide. The electrically conductive rubber composition comprises a rubber component, a crosslinking component for crosslinking the rubber component, and a foaming component including sodium hydrogen carbonate and citric acid.Type: GrantFiled: March 4, 2014Date of Patent: February 28, 2017Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Yusuke Tanio, Naoyuki Satoyoshi
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Patent number: 9283162Abstract: The present invention provides a composition for an oily foamable aerosol, characterized in that the composition comprises a fat or oil, and a polyglycerol fatty acid ester and/or an organic and fatty acid esters of glycerol; and an aerosol comprising the composition as defined in above and a propellant.Type: GrantFiled: October 24, 2002Date of Patent: March 15, 2016Assignee: TAIYO KAGAKU CO., LTD.Inventors: Yoshihiko Takase, Kazuhito Uchida, Naoteru Honda, Tomoharu Kato, Nagahiro Yamazaki
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Patent number: 9023773Abstract: Lubrication additives of the current invention require formation of emulsions in base lubricants, created with an aqueous salt solution plus a single-phase compound such that partitioning within the resulting emulsion provides thermodynamically targeted compounds for boundary layer organization thus establishing anti-friction and/or anti-wear. The single-phase compound is termed “boundary layer organizer”, abbreviated BLO. These emulsion-contained compounds energetically favor association with tribologic surfaces in accord with the Second Law of Thermodynamics, and will organize boundary layers on those surfaces in ways specific to the chemistry of the salt and BLO additives. In this way friction modifications may be provided by BLOs targeted to boundary layers via emulsions within lubricating fluids, wherein those lubricating fluids may be water-based or oil-based.Type: GrantFiled: May 22, 2013Date of Patent: May 5, 2015Assignee: The United States of America as Represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Robert Chaffee Richmond, Harry F. Schramm, Jr., Francis G. Defalco
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Patent number: 9012522Abstract: Method for making a liquid foam from graphene. The method includes preparing an aqueous dispersion of graphene oxide and adding a water miscible compound to the aqueous dispersion to produce a mixture including a modified form of graphene oxide. A second immiscible fluid (a gas or a liquid) with or without a surfactant are added to the mixture and agitated to form a fluid/water composite wherein the modified form of graphene oxide aggregates at the interfaces between the fluid and water to form either a closed or open cell foam. The modified form of graphene oxide is the foaming agent.Type: GrantFiled: June 14, 2012Date of Patent: April 21, 2015Assignee: Massachusetts Institute of TechnologyInventors: Daniel Alcazar Jorba, Edwin Lorimer Thomas
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Patent number: 8772357Abstract: A stabilized foam formed from a foaming aqueous solution comprising from 0.1 to 7 mol of one or more decontamination, stripping and/or degreasing reactants per liter of solution and from 0.01 to 15% by weight of a solid stabilizing agent of solid particles type, with respect to the total weight of the solution, and a process for the preparation of said stabilized foam, to its use in decontaminating, stripping and/or degreasing a surface and to a process for decontaminating, stripping and/or degreasing a surface.Type: GrantFiled: February 14, 2008Date of Patent: July 8, 2014Assignees: Commissariat a l'Energie Atomique, Areva NCInventors: Sylvain Guignot, Sylvain Faure
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Patent number: 8389584Abstract: Nanodiamond material containing carbon, hydrogen, nitrogen and oxygen characterized by the absence of sp2 carbon phase based on X-ray photoelectron spectroscopy analysis and containing more than approximately 11 wt % of oxygen and demonstrating a pH approximately below 2.5 when dispersed in an amount of 10 wt % in deionized water. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.Type: GrantFiled: November 13, 2009Date of Patent: March 5, 2013Assignee: International Technology CenterInventors: Igor Leonidovich Petrov, Yuriy Alekseevich Skryabin, Olga Aleksandrovna Shenderova
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Patent number: 8309154Abstract: There is provided a surface-active material that comprises fibers which have been modified so as to impart surface-active properties onto said fibres and giving it a contact angle between 60° and 120°, wherein the fibres have an aspect ratio of more than 10 to 1,000. The surface-active material can be used for foam and emulsion formation and stabilization, coatings, encapsulation and drug delivery. It can for example be used in the following industries: foods, home and personal care, oilfield, agriculture, textile, construction, emulsion polymerization, leather, plastic, pulp, paper and pharma.Type: GrantFiled: November 22, 2006Date of Patent: November 13, 2012Assignee: Conopco, Inc.Inventors: Ya Cai, Jian Cao, Matthew Duncan Golding, Weichang Liu, Vesselin Nikolaev Paunov, Edward George Pelan, Simeon Dobrev Stoyanov, Weizheng Zhou
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Publication number: 20120077891Abstract: Provided are porogen compositions and methods of using such porogen compositions in the manufacture of porous materials, for example, porous silicone elastomers. The porogens generally include comprising a core material and shell material different from the core material. The porogens can be used to form a scaffold for making a resulting porous elastomer when the scaffold is removed.Type: ApplicationFiled: September 27, 2011Publication date: March 29, 2012Applicant: ALLERGAN, INC.Inventors: Futian Liu, Nicholas J. Manesis, Xiaojie Yu, Athene Wan Chie Chan
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Patent number: 8063265Abstract: A hydrogel having a floatability where from 40% to 90% of a solution and/or suspension to be thickened are thickened starting from the surface of the liquid and the rest of the solution and/or suspension to be thickened is thickened starting from the bottom of the container, a process for preparing the hydrogel and also its use for absorbing blood and/or body fluids, especially in hygiene articles, or for thickening aqueous solutions and/or suspensions, especially for thickening medical wastes.Type: GrantFiled: October 28, 2004Date of Patent: November 22, 2011Assignee: BASF AktiengesellschaftInventors: Martin Beck, Volker Frenz, Anna Kowalski, Elisabeth Selzer, Ernst Jürgen Bauer, Harald Keller, Bernhard Steinmetz
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Patent number: 8058318Abstract: There is provided an acidic zirconia sol having compatibility of particle properties and binding properties, and a production method of the same. The acidic zirconia sol includes zirconia particles (a) having a particle diameter ranging from 20 to 300 nm in a content of 90 to 50% by mass, based on the mass of all zirconia particles, and zirconia particles (b) having a particle diameter of less than 20 nm in a content of 10 to 50% by mass, based on the mass of all zirconia particles.Type: GrantFiled: January 14, 2010Date of Patent: November 15, 2011Assignee: Nissan Chemical Industries, Ltd.Inventors: Yutaka Ohmori, Hirokazu Kato, Kenji Yamaguchi
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Publication number: 20100324155Abstract: A solution of soluble metal, soluble polymer, and a suitable solvent is converted into a gel body having a surface area to volume ratio no greater than 10. The gel body is converted to inorganic foam. Foams of metal oxide, metal nitride foam, metal carbide foam, metal selenide, and elemental metal were prepared. Several of the foams are (a) molybdenum carbide and molybdenum nitride, (b) TiO, (c) copper selenide, (d) copper indium selenide, (e) molybdenum carbide, molybdenum nitride, and platinum, and (f) ruthenium dioxide.Type: ApplicationFiled: August 30, 2010Publication date: December 23, 2010Applicant: LOS ALAMOS NATIONAL SECURITY, LLCInventors: Anthony K. Burrell, Thomas M. McCleskey, Quanxi Jia, Eva Bauer, Karen J. Blackmore, Alexander H. Mueller, Matthew Dirmyer
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Patent number: 7833950Abstract: A method for minimizing the amount of metal crosslinked viscosifier necessary for treating a wellbore with proppant or gravel is given. The method includes using fibers to aid in transporting, suspending and placing proppant or gravel in viscous carrier fluids otherwise having insufficient viscosity to prevent particulate settling. Fibers are given that have properties optimized for proppant transport but degrade after the treatment into degradation products that do not precipitate in the presence of ions in the water such as calcium and magnesium. Crosslinked polymer carrier fluids are identified that are not damaged by contaminants present in the fibers or by degradation products released by premature degradation of the fibers.Type: GrantFiled: May 30, 2008Date of Patent: November 16, 2010Assignee: Schlumberger Technology CorporationInventors: Dean M. Willberg, Christopher N. Fredd, Marina Bulova
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Patent number: 7816411Abstract: The disclosed invention relates to a process for making a multiphase mixture, comprising: flowing a first fluid stream through a process microchannel, the first fluid stream comprising at least one liquid and/or at least one gas, the process microchannel having an apertured section; flowing a second fluid stream through the apertured section into the process microchannel in contact with the first fluid stream to form the multiphase mixture, the second fluid stream comprising at least one gas and/or at least one microbody-forming material, the first fluid stream forming a continuous phase in the multiphase mixture, the second fluid stream forming a discontinuous phase dispersed in the continuous phase.Type: GrantFiled: November 23, 2009Date of Patent: October 19, 2010Assignee: Velocys, Inc.Inventors: Anna Lee Tonkovich, Laura J. Silva, David John Hesse, Michael Alan Marchiando, Micheal Jay Lamont, Dongming Qiu, Terence Andrew Dritz, Kristina M. Pagnotto, Richard Stevenson, Steven T. Perry, Maddalena Fanelli, Ravi Arora, Bin Yang, Sean Patrick Fitzgerald, Timothy J. Sullivan, Kai Tod Paul Jarosch, Thomas Yuschak
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Publication number: 20100068366Abstract: The disclosed invention relates to a process for making a multiphase mixture, comprising: flowing a first fluid stream through a process microchannel, the first fluid stream comprising at least one liquid and/or at least one gas, the process microchannel having an apertured section; flowing a second fluid stream through the apertured section into the process microchannel in contact with the first fluid stream to form the multiphase mixture, the second fluid stream comprising at least one gas and/or at least one microbody-forming material, the first fluid stream forming a continuous phase in the multiphase mixture, the second fluid stream forming a discontinuous phase dispersed in the continuous phase.Type: ApplicationFiled: November 23, 2009Publication date: March 18, 2010Inventors: Anna Lee Tonkovich, Laura J. Silva, David John Hesse, Michael Alan Marchiando, Micheal Jay Lamont, Dongming Qiu, Terrence Andrew Dritz, Kristina M. Pagnotto, Richard Stevenson, Steven T. Perry, Maddalena Fanelli, Ravi Arora, Bin Yang, Sean Patrick Fitzgerald, Timothy J. Sullivan, Kai Tod Paul Jarosch, Thomas Yuschak
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Publication number: 20090306223Abstract: There is provided a surface-active material that comprises fibres which have been modified so as to impart surface-active properties onto said fibres and giving it a contact angle between 60° and 120°, wherein the fibres have an aspect ratio of more than 10 to 1,000. The surface-active material can be used for foam and emulsion formation and stabilisation, coatings, encapsulation and drug delivery. It can for example be used in the following industries: foods, home and personal care, oilfield, agriculture, textile, construction, emulsion polymerisation, leather, plastic, pulp, paper and pharma.Type: ApplicationFiled: November 22, 2006Publication date: December 10, 2009Inventors: Ya Cai, Jian Cao, Matthew Duncan Golding, Weichang Liu, Vesselin Nikolaev Paunov, Edward George Pelan, Simeon Dobrev Stoyanov, Weizheng Zhou
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Patent number: 7629389Abstract: A production method of an alkaline zirconia sol including: a process (I) in which an alkaline zirconia sol (A) is mixed with a basic zirconium carbonate salt (B1), the alkaline zirconia sol (A) being obtained by: a sub-process (i) in which a zirconium salt (B2) is heated at 60 to 110° C. in an aqueous medium containing a carbonate salt of quaternary ammonium; and a sub-process (ii) in which a hydrothermal treatment is performed at 110 to 250° C. following the sub-process (i).Type: GrantFiled: June 21, 2006Date of Patent: December 8, 2009Assignee: Nissan Chemical Industries, Ltd.Inventors: Yutaka Ohmori, Hirokazu Kato, Kenji Yamaguchi
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Patent number: 7344705Abstract: Low density microspheres, methods for preparing same, and use of same as contrast agents are described. The microspheres have a void which contains a gas or the vapor of a volatile liquid selected from the group consisting of aliphatic hydrocarbons, chlorofluorocarbons, tetraalkyl silanes and perfluorocarbons.Type: GrantFiled: October 18, 2005Date of Patent: March 18, 2008Assignee: Bristol-Myers Squibb Medical Imaging, Inc.Inventor: Evan C. Unger
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Patent number: 7192985Abstract: A more controllable 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 rubber particulates or polyethylene particulates forming an aggregate suitable for spraying in the presence of volatile organic compound (VOC) propellants without melting or deterioration. 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: October 30, 2003Date of Patent: March 20, 2007Assignee: Spraytex, Inc.Inventor: John R. Woods
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Patent number: 7163962Abstract: A more controllable 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 rubber particulates or polyethylene particulates forming an aggregate suitable for spraying in the presence of volatile organic compound (VOC) propellants without melting or deterioration. 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: June 9, 2003Date of Patent: January 16, 2007Assignee: Spraytex, Inc.Inventor: John R. Woods
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Patent number: 7141612Abstract: The invention relates to stabilized gas-in-liquid dispersions or foams containing a liquid continuous phase, a dispersed gas phase, and surface-modified fullerenes, dendrimers, organic polymeric microspheres, or combinations thereof.Type: GrantFiled: December 31, 2002Date of Patent: November 28, 2006Assignee: 3M Innovative Properties CompanyInventors: Jimmie R. Baran, Jr., James S. Stefely, Stephen W. Stein
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Patent number: 7091302Abstract: The invention describes a process for the preparation of polycarbonate. The process includes (a) transesterifying at least one aromatic dihydroxyaryl compound and a diaryl carbonate in the melt in the presence of a catalyst, (b) mixing the melt obtained in step (a) with a foaming agent (c) passing the mixture at 250 to 340° C. through inlet openings of a separating vessel at a rate of 0.1 to 20 kg/hour, to obtain a plurality of streams of foamed polycarbonate and degassing the streams of foamed polycarbonate in the separating vessel wherein the pressure is 0.1 to 20 mbar.Type: GrantFiled: April 14, 2005Date of Patent: August 15, 2006Assignee: Bayer Materialscience AGInventors: Jörg Kirchhoff, Thomas König, Klemens Kohlgrüber, Steffen Kühling, Melanie Möthrath, Dirk Van Meirvenne
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Patent number: 6939530Abstract: Microspheres are prepared by a process comprising (i) spray-drying a solution or dispersion of a wall-forming material in order to obtain intermediate microspheres and (ii) reducing the water-solubility of at least the outside of the intermediate microspheres. Suitable wall-forming materials include proteins such as albumin and gelatin. The microspheres have walls of 40-500 nm thick and are useful in ultrasonic imaging. The control of size, size distribution and degree of insolubilisation and cross-linking of the wall-forming material allows novel microsphere preparations to be produced. In particular, the microspheres may be 15-20 ?m, targeted to selected areas of the body or of prolonged life in the circulation.Type: GrantFiled: June 21, 2002Date of Patent: September 6, 2005Assignee: Quadrant Drug Delivery LimitedInventors: Andrew Derek Sutton, Richard Alan Johnson
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Patent number: 6919068Abstract: A method is provided to prepare gas-filled, porous microparticles having a polymer matrix interior which are useful as ultrasound echogenic contrast agents. An oil-in-water suspension is formed, both phases are frozen, then the aqueous and nonaqueous frozen phases are removed by sublimation. The resulting porous microparticles can receive a gas and be used as an ultrasound contrast agent.Type: GrantFiled: May 17, 2002Date of Patent: July 19, 2005Assignee: Point Biomedical CorporationInventor: Robert E. Short
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Patent number: 6773696Abstract: Low density microspheres, methods for preparing same, and use of same as contrast agents are described. The microspheres have a void having a volume that comprises at least about 75% of the total volume of the microspheres, and which contains a gas or the vapor of a volatile liquid selected from the group consisting of aliphatic hydrocarbons, chlorofluorocarbons, tetraalkyl silanes and perfluorocarbons.Type: GrantFiled: October 25, 2002Date of Patent: August 10, 2004Assignee: Bristol-Myers Squibb Medical Imaging, Inc.Inventor: Evan C. Unger
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Patent number: 6656974Abstract: An absorbent foam material which comprises a solid, cross-linked form of an anionic polymer (e.g. an alginate) and fibers or other cation contributing polymeric particulates which have donated appropriate cations for effecting cross-linking of the anionic polymer. Methods of producing the foam material are also disclosed.Type: GrantFiled: September 21, 2000Date of Patent: December 2, 2003Assignee: Advanced Medical Solutions LimitedInventors: Donald W. Renn, Yimin Qin, Chiara Rossetto
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Patent number: 6550750Abstract: An apparatus for making a long lasting foam. The apparatus includes an injection chamber, an expansion chamber and a coiled hose which extends therebetween. The coiled hose includes a plurality of turns. A pressure generating pump is provided to force a stream of a foam solution into the injection chamber where it is mixed with a pressurized stream of air and passed through the injection chamber, through the coiled hose, and through the expansion chamber in order to yield a foam having desirable stability and expansion characteristics.Type: GrantFiled: October 25, 2000Date of Patent: April 22, 2003Inventors: David Kalkstein, John Edward Balkiewicz
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Patent number: 6528039Abstract: Substantially homogeneous aqueous suspensions of low density microspheres are presented as contrast media for imaging the gastrointestinal tract and other body cavities using computed tomography. In one embodiment, the low density microspheres are gas-filled. With computed tomography, the contrast media serve to change the relative density of certain areas within the gastrointestinal tract and other body cavities, and improve the overall diagnostic efficacy of this imaging method.Type: GrantFiled: June 18, 1997Date of Patent: March 4, 2003Assignee: Bristol-Myers Squibb Medical Imaging, Inc.Inventor: Evan C. Unger
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Patent number: 6512013Abstract: The invention concerns nucleating agent systems for foamable polymer compositions, preferably fluoropolymer resins, having foam cell nucleation sites using titanium dioxide based nucleating agents, and foamable polymers comprising the nucleating agents. The nucleating agent systems comprise TiO2, certain inorganic salts, and, optionally, sulfonic acid salts and/or phosphonic acid salts. The invention also concerns foamable composition concentrates and foamed thermoplastic insulation material comprising fluoropolymer and the nucleating agent systems.Type: GrantFiled: April 17, 2002Date of Patent: January 28, 2003Assignee: Ausimont USA, Inc.Inventor: Jeffrey A. Hrivnak
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Patent number: 6509004Abstract: The invention provides a process for the preparation of a pharmaceutical composition comprising an aqueous dispersion of gas-containing vesicles the membranes whereof comprise an amphiphilic membrane-forming material, said process comprising: (i) generating a liquid dispersion of gas-containing vesicles from a mixture comprising an amphiphilic membrane forming material; (ii) lyophilizing a liquid dispersion of said gas-containing vesicles; (iii) reconstituting the lyophilized product of step (ii) with a sterile aqueous liquid to produce an aqueous dispersion of gas-containing vesicles; and (iv) treating the aqueous dispersion product of step (iii) or the lyophilized product of step (ii) to produce a substantially aggregate-free sterile aqueous dispersion of gas-containing vesicles.Type: GrantFiled: February 18, 2000Date of Patent: January 21, 2003Assignee: Amersham Health ASInventors: Ingrid Henriksen, Vera Kasparkova, Arnfinn Andersen, Anne Kjersti Fahlvik, Liv Ingrid Odegardstuen
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Publication number: 20020123533Abstract: Composition that can be used as a polymer blowing agent, comprising from 60 to 98% of HFC-134a and from 2 to 40% of cyclopentane;Type: ApplicationFiled: February 1, 2002Publication date: September 5, 2002Inventors: Arnaud Albouy, Gerard Guilpain, Richard McMaster Crooker
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Patent number: 6444193Abstract: The invention provides a process for the preparation of gas-containing vesicles wherein a mixture of gas, liquid and vesicle membrane forming material is passed through a zone in which it is subject to shear forces exerted by surfaces moving relative to each other at a speed of at least 20 m/s.Type: GrantFiled: February 14, 2000Date of Patent: September 3, 2002Assignee: Nycomed Imaging ASInventors: Tore Omtveit, Bjorn Haugseter, Tony Pete
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Patent number: 6441054Abstract: An exemplary surface active agent admixture composition of the invention comprises (1) a first surface active agent comprising a betaine, an alkyl or aryl or alkylaryl sulfonate, or mixture thereof; and (2) a second surface active agent comprising a nonionic oxyalkylene-containing polymer surfactant. The present invention therefore provides a system for ensuring the presence in a hydratable cementitious composition (when hardened) a sufficient air volume and sufficient air void fineness and consistency. Further exemplary admixture compositions may comprise one or more plasticizers and one or more clay activity-modifying agents. Cementitious compositions and methods for modifying cementitious compositions, which incorporate the above-mentioned surface active agent combination, are also described. The invention provides the ability to adjust and stabilize air void systems in hydratable cementitious compositions, while allowing conventional air entraining agent (AEA) dosage practices to be followed.Type: GrantFiled: March 2, 2000Date of Patent: August 27, 2002Assignee: W.R. Grace & Co.-ConnInventors: Chia-Chih Ou, Ara A. Jeknavorian, Christon L. Hill
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Patent number: 6416741Abstract: Microspheres are prepared by a process comprising (i) spray-drying a solution or dispersion of a wall-forming material in order to obtain intermediate microspheres and (ii) reducing the water-solubility of at least the outside of the intermediate microspheres. Suitable wall-forming materials include proteins such as albumin and gelatin. The microspheres have walls of 40-500 nm thick and are useful in ultrasonic imaging. The control of median size, size distribution and degree of insolubilisation and cross-linking of the wall-forming material allows novel microsphere preparations to be produced. In particular, the microspheres may be 15-20 &mgr;m, targeted to selected areas of the body or of prolonged life in the circulation.Type: GrantFiled: September 3, 1999Date of Patent: July 9, 2002Assignee: Quadrant Healthcare (UK) LimitedInventors: Andrew Derek Sutton, Richard Alan Johnson
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Patent number: 6403057Abstract: The invention relates to microcapsules to a microcapsule with a mean size from a fraction of micrometer to 1000 micrometers having a biodegradable membrane encapsulating a gas core. The membrane comprising one or more biodegradable water insoluble lipids or mixtures thereof and optionally mixtures of the lipids with up to 75% by weight of biodegradable polymers encapsulates the core which is filled with air or a gas. Microcapsules disclosed, may be non-coalescent, dry and instantly dispersible, when in suspension in a physiologically acceptable carrier are useful as delivery vehicles for therapeutically active agents and/or as contrast agents for echographic imaging of organs of human or animal body.Type: GrantFiled: June 23, 2000Date of Patent: June 11, 2002Assignee: Bracco Research S.A.Inventors: Michel Schneider, Philippe Bussat
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Patent number: 6376558Abstract: A porous paste, especially a plaster paste or slurry for producing sandwich-type plasterboard, is made in a disk-shaped mixer having a rotor rotatable in a mixing chamber by introducing compressed air or other pressurizable gas through a wall or bottom segment directly into the chamber so that the incoming pressurized gas meets the mixture with a shearing action along the wall or bottom.Type: GrantFiled: January 6, 2000Date of Patent: April 23, 2002Assignee: Babcock-BSH GmbHInventors: Friedrich Bahner, Kurt Braun, Helmut Eidam, Horst Hose, Karl Maurer, Frank Ullsperger
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Patent number: 6348186Abstract: Microspheres 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 microspheres and (ii) reducing the water-solubility of at least the outside of the intermediate microspheres. Suitable wall-forming materials include proteins such as albumin and gelatin. The microsphere have walls of 40-500 nm thick and are useful in ultrasonic imaging. The control of median size, size distribution and degree of insolubilisation and cross-linking of the wall-forming material allows novel microsphere preparations to be produced. In particular, the microspheres may be 15-20 &mgr;m, targeted to selected areas of the body or of prolonged life in the circulation.Type: GrantFiled: June 5, 1995Date of Patent: February 19, 2002Assignee: Quadrant Healthcare (UK) LimitedInventors: Andrew Derek Sutton, Richard Alan Johnson
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Patent number: 6166094Abstract: A silicate-based blowing agent and method for producing foamed polymer; provides a blowing agent containing at least one metal silicate, boric acid or a salt thereof, a peroxy compound, a reaction initiator and, optionally, a desiccant. The blowing agent is prepared by mixing the ingredients at least one time and allowing the mixture to rest without mixing until a dry dilatent gel is formed. The blowing agent is useful for the production of foamed polymers, especially for the production of foamed rubber.Type: GrantFiled: May 8, 2000Date of Patent: December 26, 2000Inventors: Jeffrey L. Mauk, Kenneth G. Mauk
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Patent number: 6140380Abstract: A silicate-based blowing agent and method for producing foamed polymers provides a blowing agent containing at least one metal silicate, boric acid or a salt thereof, a peroxy compound, a reaction initiator and, optionally, a desiccant. The blowing agent is prepared by mixing the ingredients at least one time and allowing the mixture to rest without mixing until a dry dilatent gel is formed. The blowing agent is useful for the production of foamed polymers, especially for the production of foamed rubber.Type: GrantFiled: March 26, 1999Date of Patent: October 31, 2000Inventors: Jeffrey L. Mauk, Kenneth G. Mauk
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Patent number: 6017967Abstract: The invention relates to a metal sulfide dispersion used for electroplating nonconductors such as substrates used for the formation of a printed circuit board. A printed circuit board made using the dispersion could have metallized through-holes comprising electrodeposited copper on the walls of the holes with an adsorbed layer of metal sulfide particles between the circuit board base material and the copper on the walls of the through-holes. The metal sulfide is characterized by spherical particles having a mean diameter of less than 100 nanometers and a particle size distribution where less than 10 percent of the particles within the dispersion have a diameter twice that of the mean diameter of all particles within the dispersion.Type: GrantFiled: April 1, 1996Date of Patent: January 25, 2000Assignee: Shipley Company, L.L.C.Inventors: Egon Matijevic, Matthias Schultz, Wade Sonnenberg, John J. Bladon, Patrick J. Houle, Thong B. Luong
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Patent number: 5319121Abstract: A method is provided for preparing preceramic polymers and and silicious ceramic materials which derive therefrom. The preceramic polymers are polysiloxanes which are synthesized by catalytically activating Si--H bonds in a hydridosiloxane starting material and replacing the activated hydrogen atoms with non-hydrogen substituents. These preceramic polysiloxanes are pyrolyzed in a selected atmosphere to give the desired ceramic product. Ceramic products which may be prepared by this technique include silica, silicon oxynitride, silicon carbide, and metal silicates.Type: GrantFiled: July 2, 1992Date of Patent: June 7, 1994Assignee: SRI InternationalInventor: Yigal Blum