Patents Examined by Atnaf Admasu
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Patent number: 8822387Abstract: A waxy oil-external emulsion is provided for injection into a selected zone of a subsurface formation. The selected zone is typically a high permeability zone. The emulsion generally comprises oil, added wax, and water. The emulsion may also include an emulsifying agent and a solvent. The emulsion is formulated to be a liquid at a temperature greater than a targeted temperature in the subsurface formation, but a solid at the targeted temperature. The targeted temperature is typically the maximum operating temperature for the formation. A method of formulating the emulsion is also provided. Further, a method of plugging a high permeability zone using the emulsion is disclosed.Type: GrantFiled: February 21, 2012Date of Patent: September 2, 2014Assignee: ExxonMobil Upstream Research CompanyInventors: James R. Bragg, Joseph P. Lederhos, Sergio A. Leonardi, Scott E. Hommema, Amy L. Chen, Shan H. Yang
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Patent number: 8822575Abstract: The invention relates to mixtures, comprising (a) an oligomeric compound, comprising repeat units of the general formula (I) or acid-addition salts thereof and/or (b) a compound of the general formula (II) or acid-addition salts thereof and (c) at least one compound of the general formula (III) and (d) optionally further additives, and also to the use of these mixtures for the stabilization of non-living organic materials with respect to exposure to light, oxygen, and/or heat. The invention further relates to non-living organic materials, comprising at least one of these mixtures, and to articles produced therefrom. The invention further relates to a process for the stabilization of non-living organic materials, with respect to exposure to light, oxygen, and/or heat.Type: GrantFiled: August 1, 2008Date of Patent: September 2, 2014Assignee: BASF SEInventors: Simon Schambony, Hideo Yamazaki, Greg Coughlin
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Patent number: 8821958Abstract: A method for electrostatic coating of medical devices such as stents and balloons is described. The method includes applying a composition to a polymeric component of a medical device which has little or no conductivity. The polymeric component could be a material from which the body or a strut of the stent is made or could be a polymeric coating pre-applied on the stent. The polymeric component could be the balloon wall. A charge can then be applied to the polymeric component or the polymeric component can be grounded. Charged particles of drugs, polymers, biobeneficial agents, or any combination of these can then be electrostatically deposited on the medical device or the coating on the medical device. One example of the composition is iodine, iodine, iodide, iodate, a complex or salt thereof which can also impart imaging capabilities to the medical device.Type: GrantFiled: August 30, 2012Date of Patent: September 2, 2014Assignee: Abbott Cardiovascular Systems Inc.Inventors: Cameron K. Kerrigan, Stephen D. Pacetti
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Patent number: 8796188Abstract: A process for forming a strong, low-density proppant, which process includes heating pumice particulates, or shaped agglomerates thereof, so as to form heat-treated pumice particulates, or heat-treated, shaped pumice agglomerates, having an apparent density of 2.4 or less and a crush resistance of no more than 10% fines at 4000 psi. Proppants, and well treatment fluids comprising proppants, meeting these characteristics and processes for treating subterranean formations using fluids which include such proppants are also described.Type: GrantFiled: November 17, 2009Date of Patent: August 5, 2014Assignee: Baker Hughes IncorporatedInventors: Thomas J. Pisklak, Richard F. Stevens, Jr., Qi Qu, Elizabeth G. Morillo
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Patent number: 8765867Abstract: An object of the present invention is to provide a heat-resistant resin paste that enables the formation of a precise pattern, exhibits excellent adhesiveness, heat resistance and flexibility, and enables a shortening of the production time, as well as a method for producing thereof. The present invention relates to a heat-resistant resin paste, comprising a first organic solvent (A1), a second organic solvent (A2) that comprises a lactone, a heat-resistant resin (B) that is soluble in a mixed organic solvent of (A1) and (A2), and a heat-resistant resin filler (C) that is soluble in (A1) but insoluble in (A2), wherein (C) is dispersed within a solution comprising (A1), (A2) and (B).Type: GrantFiled: September 28, 2004Date of Patent: July 1, 2014Assignee: Hitachi Chemical Company, Ltd.Inventors: Hiroyuki Kawakami, Reiko Yamaguchi, Yoshihiro Nomura
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Patent number: 8759261Abstract: The present invention provides a method of treating a hydrocarbon containing formation comprising (a) providing a hydrocarbon recovery composition to at least a portion of the hydrocarbon containing formation, wherein the composition comprises one or more internal olefin sulfonates having 17 or more carbon atoms, (b) adding water and/or brine from the hydrocarbon formation to the composition, (c) adding a solubilizer which comprises an ethoxylated alcohol wherein the alcohol before ethoxylation had an average molecular weight of at least about 220 and (d) allowing the composition to interact with hydrocarbons in the hydrocarbon containing formation. The solubilizer may comprise less than about 0.1 wt %, preferably from about 0.02 to about 0.05 wt %, of the total composition and it may have from about 5 to about 9 moles of ethylene oxide per mole of alcohol.Type: GrantFiled: February 5, 2009Date of Patent: June 24, 2014Assignee: Shell Oil CompanyInventors: Julian Richard Barnes, Kirk Herbert Raney, Thomas Carl Semple, Paul Gregory Shpakoff, Johan Paul Smit, Jasper Roelf Smit
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Patent number: 8759440Abstract: Provided is a heat-resistant resin paste excellent in heat resistance, flexibility, printability and viewability. A heat-resistant resin paste containing a first organic solvent (A1), a second organic solvent (A2) containing a lactone, a heat-resistant resin (B) soluble in a mixed solvent of the solvents (A1) and (A2), a heat-resistant resin filler (C) insoluble in the mixed organic solvent of the solvents (A1) and (A2), and a pigment (D), wherein the components (C) and (D) are dispersed in a solution containing the solvents (A1) and (A2) and the component (B).Type: GrantFiled: June 1, 2007Date of Patent: June 24, 2014Assignee: Hitachi Chemical Company, Ltd.Inventors: Hiroyuki Kawakami, Kouji Yamazaki, Takuya Imai, Youji Katayama
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Patent number: 8734891Abstract: A system and method for coating an endoprosthesis involves an applicator capable of delivering a coating substance to the endoprosthesis without spraying. The applicator may have a tube or die through which a coating substance is moved upwards by capillary action or by means of a pump so as to form an accumulation of the coating substance at an upper portion of the applicator. The endoprosthesis can be lowered onto the accumulation, then axially translated or rotated in order to transfer the coating substance to selected portions of the endoprosthesis. The applicator is lowered and/or the endoprosthesis is raised in order to form gaps in the coating. Selective coating of abluminal or luminal surface of the endoprosthesis may also be performed by allowing the surface to skip on a liquid surface of a pool of the coating substance.Type: GrantFiled: September 12, 2012Date of Patent: May 27, 2014Assignee: Abbott Cardiovascular Systems Inc.Inventor: Anthony S. Andreacchi
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Patent number: 8728990Abstract: A composition and method of fracturing a subterranean formation. The composition includes: about 0.25 wt. % to about 3.0 wt. %, based on a weight of the hydrocarbon liquid, of a mixture of phosphate esters, said esters selected from the group consisting of: monoester PO(OR1)(OH)2, PO(OR2)(OH)2; diester PO(OH)(OR1)m(OR2)2?m where m=0, 1, or 2; triester PO(OH)(OR1)n(OR2)3?n where n=0, 1, 2 or 3; and phosphoric acid H3PO4 wherein R1 and R2 each have 2 to 18 carbon atoms; and about 0.2 wt. % to about 1.0 wt. %, based on the weight of the hydrocarbon liquid, of an acidic polynuclear aluminum compound having an Al:Cl mole ratio ranging from about 1.40:1 to about 2.2:1. The composition is added to a hydrocarbon liquid to fracture the subterranean formation with this hydrocarbon liquid. The hydrocarbon liquid containing the composition exhibits a substantially constant viscosity.Type: GrantFiled: December 4, 2009Date of Patent: May 20, 2014Assignee: Elementis Specialties, Inc.Inventors: David Dino, Alart Mulder
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Patent number: 8722589Abstract: The invention provides for the use of 1-alkyl-5-oxopyrrolidine-3-carboxylic esters, preparable by esterifying alcohols having from 1 to 100 hydroxyl groups with 1-alkyl-5-oxopyrrolidine-3-carboxylic acid, in amounts of from 0.01 to 2% by weight for preventing the formation of gas hydrates in aqueous phases which are in contact with a gaseous, liquid or solid organic phase.Type: GrantFiled: August 1, 2008Date of Patent: May 13, 2014Assignee: Clariant Finance (BVI) LimitedInventors: Dirk Leinweber, Alexander Roesch, Michael Feustel
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Patent number: 8722779Abstract: The invention relates to a thermoplastic processible aminoplast resin, a method for its production and a fine fiber non-woven material as textile area of fibers from aminoplast resins, in particular duroplastic triazine resins, which have an average fiber diameter of 0.1 to 100 ?m and between 1 and 1000 branching arms and between 1 and 300 branching points per square millimeter. The invention also relates to a method for production of duroplastic fine fiber non-woven material in which a melt of melamine resin is pressed through spinning nozzles and blown by the escaping hot air to fine fibers, the fine fibers are separated from the air stream and deposited to a non-woven material consisting of a tangled layer, a treatment with a media causing cross-linking and a neutralization step follows, and the fine fibers are glued to a non-woven material in a subsequent thermal after-treatment, whereat the thermal after-treatment comprises two steps.Type: GrantFiled: October 10, 2008Date of Patent: May 13, 2014Assignee: Borealis Agrolinz Melamine GmbHInventors: Ulf Panzer, Bernd Riedel, Steffen Pfeiffer, Hartmut Bucka, Ina Sigmund, Frank Meister, Markus Machherndl, Markus Grossalber
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Patent number: 8697614Abstract: Chemical compounds that are N-lauroyl amino acids or derivatives thereof were found to have oil-releasing activity. Solutions containing these compounds may be introduced into oil reservoirs or onto oil-contaminated surface sites to release oil from oil-coated surfaces. The released oil may be recovered for further processing or waste disposal.Type: GrantFiled: November 17, 2011Date of Patent: April 15, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Eric R. Choban, Berardino D'Achille, Rachel L. Hardie, Michael P. Perry, Christina S. Stauffer, Bogdan Szostek
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Patent number: 8697786Abstract: A zero-halogen flame-retardant compound and continuous materials extruded therefrom comprise poly(ethylene terephthalate) (PET), fire-retardant ingredients melamine cyanurate (MC) and melamine polyphosphate (MPP), and an organo titanate coupling agent. The coupling agent acts as a dispersion agent to the fine powders of PET, MC and MPP and also allows the resin of the fine powders to be compounded at a reduced temperature which prevents degradation of the PET. The compound can be extruded as a thin film, sheet or tubing, and also as a filament or yarn, including monofilaments and multifilaments, which can ultimately be used to construct a protective sleeve.Type: GrantFiled: June 16, 2011Date of Patent: April 15, 2014Assignee: Federal Mogul Powertrain, Inc.Inventor: Ming-Ming Chen
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Patent number: 8691731Abstract: Generating heat within a combination solvent/acid system removes undesirable deposits from petroleum reservoir formations (especially the near well-bore region), oilfield equipment, and petroleum processing equipment. An exothermic reaction occurs between the solvent and the acid and the heat evolved helps remove organic solid deposits. The acids may include organic acid compounds, such as sulfonic acids, sulfuric acid and nitric acid. The solvents may include terpene- and terpene-derivative-containing solvents, including, but not necessarily limited to, limonene, pinene, dipentene, myrcene, turpentines and compounds having at least one double bond, such as methyl furan, dienes, styrene, vinyl acetate and the like. The exothermic reaction produces a great amount of heat, and together with using certain acids and solvents already known as effective to remove paraffin and asphaltene deposition, removing such deposits is improved.Type: GrantFiled: November 5, 2010Date of Patent: April 8, 2014Assignee: Baker Hughes IncorporatedInventors: David W. Jennings, Samuel Asomaning, Michael E. Newberry
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Patent number: 8680027Abstract: The invention provides a material comprising: a core made of a solid material; a first layer surrounding the core made of a swellable material able to swell in contact with a fluid; a second layer surrounding the first layer made of a glue material able to glue to a third element.Type: GrantFiled: April 4, 2008Date of Patent: March 25, 2014Assignee: Schlumberger Technology CorporationInventor: James Simon
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Patent number: 8673827Abstract: Method of selective quantitation of a polymerizable monomeric species in a well spacer fluid, said method comprising the steps of adding at least one solvent having a refractive index of less than about 1.33 to a sample of the complex mixture to produce a solvent phase, and measuring the refractive index of the solvent phase.Type: GrantFiled: November 28, 2007Date of Patent: March 18, 2014Assignee: Los Alamos National Security, LLCInventor: Robert E. Hermes
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Patent number: 8669213Abstract: A well servicing fluid formulated with components comprising a friction reducer having at least one polymer unit chosen from acrylamide groups, acrylate groups, sulfo groups, and maleic acid groups; and an anionic surfactant, a cationic surfactant and an aqueous base capable of forming a viscoelastic gel. Methods of making the well servicing fluid and methods of employing the well servicing fluid in a well are also disclosed.Type: GrantFiled: March 31, 2010Date of Patent: March 11, 2014Assignee: Baker Hughes IncorporatedInventors: D. V. Satyanarayana Gupta, Justyna Ferraro, Kay Cawiezel
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Patent number: 8507412Abstract: New fluids are disclosed for use in servicing subterranean formations containing oil and gas. In particular, an improved chemical gelling additive for hydrocarbon based fracturing fluids is disclosed having reduce, negligible or no volatile phosphorus at temperatures below about 250° C.Type: GrantFiled: December 27, 2011Date of Patent: August 13, 2013Assignee: Clearwater International LLCInventors: Brent Lukocs, Shaun Mesher, Thomas P. Wilson, Jr., Tina Garza, Wayne Mueller, Frank Zamora, Larry W. Gatlin
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Patent number: 8492462Abstract: The present invention relates to a color stable thermoplastic composition comprising a copolyester elastomer; and a stabilizer comprising (i) an aromatic amine; and (ii) a di-substituted imidazoline, wherein the color lightness (L*) of the composition is greater than 50. The invention also relates to the molded articles produced from the color stable thermoplastic compositions and the use thereof in automotive applications.Type: GrantFiled: April 20, 2009Date of Patent: July 23, 2013Assignee: DSM IP Assets B.V.Inventor: Franciscus J. M. Souren
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Patent number: 8470913Abstract: An object of the present invention is to provide a thermosetting resin composition having high heat resistance, high flame retardancy, good mechanical properties, and high dimensional stability. To achieve the object, there are provided a thermosetting resin composition containing a polyimide resin and a boron compound represented by general formula below and a cured product of the thermosetting resin composition. (R1's each independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms. R2's each independently represent hydrogen, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms. Y represents a nitrogen-containing heterocyclic compound. R3's each independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms. Z represents a nitrogen-containing heterocyclic compound.Type: GrantFiled: May 24, 2010Date of Patent: June 25, 2013Assignee: DIC CorporationInventor: Eijyu Ichinose