Patents Examined by Alicia M. Toscano
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Patent number: 7867952Abstract: Disclosed are a flexible polymer, particles made from same, and a process for preparing the particles. This flexible polymer is obtained from copolymerizing monomer (A) and monomer (B), wherein monomer (A) is one or more water-insoluble unsaturated diene monomers; monomer (B) is at least one compound with the general formula of wherein R is C1-C12alkyl, C1-C12 alkyl aryl, C1-C12 alkyl ether or C1-C12alkyl ester. Monomer (A) is in an amount of 60-90% by weight of the total combined weight of monomer (A) and monomer (B). Monomer (B) is in an amount of 10-40% by weight of the total combined weight of monomer (A) and monomer (B). The flexible polymer particles show excellent flexibility, deformability, elasticity as well as stability. They can be used in oilfields in nearby wellbore profile control and in-depth profile control or as in-depth flooding fluid diverting agents.Type: GrantFiled: December 12, 2007Date of Patent: January 11, 2011Assignee: Petrochina Company LimitedInventors: Pingmei Wang, Jianhui Luo, Yuzhang Liu, Huaijiang Zhu, Chunming Xiong, Qiang Liu, Ruyi Jiang, Yikun Li, Ying Zhang
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Patent number: 7851413Abstract: In order to transport hydrates in suspension in a fluid comprising water, gas and a liquid hydrocarbon, at least one non-polluting composition consisting essentially of a mixture comprising at least one ester associated with a non-ionic co-surfactant of the polymerized (dimer and/or trimer) carboxylic acid type is incorporated into said fluid. The composition is generally introduced in a concentration of 0.1% to 5% by weight with respect to the liquid hydrocarbon.Type: GrantFiled: December 12, 2005Date of Patent: December 14, 2010Assignee: IFP Energies NouvellesInventors: Sinquin Anne, Christine Dalmazzone, Annie Audibert, Vincent Pauchard
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Patent number: 7838468Abstract: A clayish subterranean formation, such as may be encountered in rock surrounding a well bore during hydrocarbon recovery operations may be stabilized with relatively high molecular weight acid ammonium salts of an imide of polymaleic anhydride. The salts may be unneutralized or partially neutralized. The invention is particularly relevant to hydraulic fracturing fluids used in enhanced oil recovery. The compositions herein are made in the presence of a reactive solvent, such as a polyalkylene glycol, e.g. polyethylene glycol. The compositions of this invention are more environmentally friendly than some current technology.Type: GrantFiled: January 4, 2008Date of Patent: November 23, 2010Assignee: Baker Hughes IncorporatedInventors: David J. Poelker, JoAnn McMahon, John A. Schield
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Patent number: 7829637Abstract: A molding composition is provided that includes a thermoset cross-linkable polymeric resin, a fibrous filler and a thickener system. The thickener system includes an amine and an isocyanate that are reactive to form a polyurea. The polyurea is operative to thicken the molding composition formulation prior to polymeric resin thermoset with superior properties relative to conventional thickener systems. A molded article produced from a cross-linked thermoset polymeric resin containing fibrous filler and a polyurea present from 1 to 5 total weight percent of the article either forms an interpenetrating network between the resin and the polyurea or the resin and polyurea crosslink upon resin thermoset to further strengthen the resulting article. An alkali earth oxide or hydroxide simultaneously thickens through interaction with carboxylate functionality of the cross-linkable resin to provide a superior viscosity build and humidity tolerance.Type: GrantFiled: September 16, 2009Date of Patent: November 9, 2010Assignee: Continental Structural PlasticsInventors: Probir K. Guha, Michael J. Siwajek, Brian A. Beach
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Patent number: 7816449Abstract: The present invention is an adhesion promoter, a coating composition containing the adhesion promoter and a method for preparing the adhesion promoter and coating. The adhesion promoter of the present invention is an olefin based polymer prepared by reacting a hydroxy functional olefin polymer with a compound reactive with hydroxy functionality to provide functionality on the olefin polymer that is inert to reaction with a principal resin or crosslinking resin in a coating composition.Type: GrantFiled: December 23, 2004Date of Patent: October 19, 2010Assignee: BASF Coatings GmbHInventors: Gregory G. Menovcik, William H. Merritt, Walter H. Ohrbom
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Patent number: 7803740Abstract: Thermoset polymer particles are used in many applications requiring lightweight particles possessing high stiffness, strength, temperature resistance, and/or resistance to aggressive environments. The present invention relates to the use of two different methods, either each by itself or in combination, to enhance the stiffness, strength, maximum possible use temperature, and environmental resistance of such particles. One method is the application of post-polymerization process steps (and especially heat treatment) to advance the curing reaction and to thus obtain a more densely crosslinked polymer network. In general, its main benefits are the enhancement of the maximum possible use temperature and the environmental resistance. The other method is the incorporation of nanofillers, resulting in a heterogenous “nanocomposite” morphology. In general, its main benefits are increased stiffness and strength.Type: GrantFiled: December 30, 2005Date of Patent: September 28, 2010Assignee: Sun Drilling Products CorporationInventors: Jozef Bicerano, Robert L. Albright
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Patent number: 7803742Abstract: Thermoset polymer particles are used in many applications requiring lightweight particles possessing high stiffness, strength, temperature resistance, and/or resistance to aggressive environments. The present invention relates to the use of two different methods, either each by itself or in combination, to enhance the stiffness, strength, maximum possible use temperature, and environmental resistance of such particles. One method is the application of post-polymerization process steps (and especially heat treatment) to advance the curing reaction and to thus obtain a more densely crosslinked polymer network. In general, its main benefits are the enhancement of the maximum possible use temperature and the environmental resistance. The other method is the incorporation of nanofillers, resulting in a heterogeneous “nanocomposite” morphology. In general, its main benefits are increased stiffness and strength.Type: GrantFiled: April 24, 2009Date of Patent: September 28, 2010Assignee: Sun Drilling Products CorporationInventors: Jozef Bicerano, Robert L. Albright
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Patent number: 7803741Abstract: Thermoset polymer particles are used in many applications requiring lightweight particles possessing high stiffness, strength, temperature resistance, and/or resistance to aggressive environments. The present invention relates to the use of two different methods, either each by itself or in combination, to enhance the stiffness, strength, maximum possible use temperature, and environmental resistance of such particles. One method is the application of post-polymerization process steps (and especially heat treatment) to advance the curing reaction and to thus obtain a more densely crosslinked polymer network. In general, its main benefits are the enhancement of the maximum possible use temperature and the environmental resistance. The other method is the incorporation of nanofillers, resulting in a heterogeneous “nanocomposite” morphology. In general, its main benefits are increased stiffness and strength.Type: GrantFiled: April 24, 2009Date of Patent: September 28, 2010Assignee: Sun Drilling Products CorporationInventors: Jozef Bicerano, Robert L. Albright
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Patent number: 7799744Abstract: The present invention relates to polymer-coated particulates suitable for use in subterranean operations such as gravel packing, frac-packing, and hydraulic fracturing. One embodiment of the present invention provides improved particulates for use in a subterranean formation, comprising particulates at least partially coated with a polymer, wherein the polymer is deposited on the particulates by at least partially coating the particulates with a polymer solution comprising the polymer and a solvent and then exposing the particulates to an aqueous medium such that the solvent substantially dissociates from the polymer solution and such that the polymer substantially remains on the particulates.Type: GrantFiled: March 9, 2005Date of Patent: September 21, 2010Assignee: Halliburton Energy Services, Inc.Inventors: Thomas D. Welton, Philip D. Nguyen
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Patent number: 7750091Abstract: Compositions comprising blends of polyphenylene and poly(aryl ether sulfone) and methods for making such blends are disclosed. Miscible blends of polyphenylene and poly(aryl ether sulfone) are also disclosed. The blends are useful in numerous applications such as in the preparation of articles and of foams having reduced density.Type: GrantFiled: September 6, 2007Date of Patent: July 6, 2010Assignee: Solvay Advanced Polymers, L.L.C.Inventors: Nikica Maljkovic, Roy L. Carter, David B. Thomas, Leslie J. Myrick, Todd S. Rushing
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Patent number: 7745547Abstract: The present invention provides multi-arm siloxane-based molecules suitable for use as a drug delivery vehicle comprising a central core molecule that comprises a cyclic or cubic siloxane, and a plurality of arms attached to the central core molecule, wherein each arm comprises an organic moiety. The multi-arm siloxane-based molecules described herein are suitable for encapsulation of a therapeutic agent. The invention further includes pharmaceutical compositions comprising the claimed multi-arm siloxane-based molecules and an encapsulated therapeutic agent in combination with a pharmaceutically acceptable carrier. Methods of making and using the multi-arm siloxane-based molecules are also provided.Type: GrantFiled: August 7, 2006Date of Patent: June 29, 2010Assignees: Becton, Dickinson and Company, Research Foundation of the City University of NYInventors: Andrew Auerbach, Bhanu P. S. Chauhan, Richard P. Clarke, M. Ishaq Haider, Umar Latif
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Patent number: 7745380Abstract: A method of treating a wellbore that includes circulating a wellbore fluid in the wellbore, wherein the wellbore fluid comprises an oleaginous base fluid and a wellbore additive colloidal solid material, and wherein the wellbore additive colloidal solid material is formed by grinding a solid particulate material and a polymeric dispersing agent for a sufficient time so that the polymeric dispersing agent is absorbed to the surface of the resulting colloidal solid particles and less than 10% of the resulting colloidal solid particles have a diameter greater than 10 microns, but not more than five percent of the particles are less than 0.2 micron in diameter, wherein the grinding is carried out in the presence of an oleaginous base fluid and wherein the grinding is carried out so that the wellbore additive colloidal solid material has a weight average particle diameter d50 less than 2.0 microns.Type: GrantFiled: January 15, 2009Date of Patent: June 29, 2010Assignee: M-I L.L.C.Inventors: Andrew J. Bradbury, Christopher A. Sawdon, Sonny Clary, William M. Reid, Tom Heinz
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Patent number: 7727935Abstract: Among many things, in some embodiments, dual-function additives that enhance fluid loss control and the stability of viscoelastic surfactant fluids, and their associated methods of use in subterranean formations, are provided. In one embodiment, the methods comprise: providing a viscoelastic surfactant fluid that comprises an aqueous base fluid, a viscoelastic surfactant, and a dual-function additive that comprises a soap component; and introducing the viscoelastic surfactant fluid into at least a portion of a subterranean formation.Type: GrantFiled: December 29, 2006Date of Patent: June 1, 2010Assignee: Halliburton Energy Services, Inc.Inventors: Thomas D. Welton, David E. McMechan, Jason E. Bryant
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Patent number: 7723431Abstract: A polyester gelcoat composition containing unsaturated polyester resin, a reactive diluent mixture including para-tertiary-butylstyrene, and one or more additives. The gelcoat composition does not include appreciable deleterious amounts of hazardous air pollution solvents. A method of making the gelcoat composition is also disclosed.Type: GrantFiled: January 6, 2010Date of Patent: May 25, 2010Assignee: Valspar Sourcing, Inc.Inventor: Brian A. Robertson
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Patent number: 7718584Abstract: Among many things, in some embodiments, dual-function additives that enhance fluid loss control and the stability of viscoelastic surfactant fluids, and their associated methods of use in subterranean formations, are provided. In one embodiment, the methods comprise: providing a viscoelastic surfactant fluid that comprises an aqueous base fluid, a viscoelastic surfactant, and a dual-function additive that comprises a soap component; and introducing the viscoelastic surfactant fluid into at least a portion of a subterranean formation.Type: GrantFiled: December 29, 2006Date of Patent: May 18, 2010Assignee: Halliburton Energy Services, Inc.Inventors: Thomas D. Welton, David E. McMechan, Jason E. Bryant
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Patent number: 7713916Abstract: Provided are treatment fluids that comprise a base fluid and an orthoester-based surfactant. In some instances, the treatment fluid may have a pH of about 8.5 or greater. Also provided are emulsified treatment fluids that comprise an oleaginous phase, an aqueous phase having a pH of about 8.5 or greater, and an orthoester-based surfactant. Methods of using the treatment fluid and methods of facilitating flow through a conduit also are provided.Type: GrantFiled: September 22, 2005Date of Patent: May 11, 2010Assignee: Halliburton Energy Services, Inc.Inventors: Gary P. Funkhouser, Rajesh K. Saini
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Patent number: 7700525Abstract: Provided are treatment fluids that comprise a base fluid and an orthoester-based surfactant. In some instances, the treatment fluid may have a pH of about 8.5 or greater. Also provided are emulsified treatment fluids that comprise an oleaginous phase, an aqueous phase having a pH of about 8.5 or greater, and an orthoester-based surfactant. Methods of using the treatment fluid and methods of facilitating flow through a conduit also are provided.Type: GrantFiled: September 23, 2009Date of Patent: April 20, 2010Assignee: Halliburton Energy Services, Inc.Inventors: Gary P. Funkhouser, Rajesh K. Saini
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Patent number: 7691944Abstract: The present invention provides a primer for a thermoplastic and/or elastomeric substrate, the primer comprising a film of an epoxy-modified polymer selected from the group consisting of an epoxy-modified-thermoplastic polymer, an epoxy-modified-thermoplastic polymeric composite, an epoxy-modified-elastomeric polymer, an epoxy-modified-elastomeric polymeric composite, a blend thereof, and any mixture thereof. Also provided are methods of repairing, inserting, assembling and coating a thermoplastic or elastomeric substrate using the primer of the present invention.Type: GrantFiled: August 12, 2009Date of Patent: April 6, 2010Assignee: National Research Council of CanadaInventors: Minh-Tan Ton-That, Johanne Denault, Kenneth C. Cole, Margaret Cole, legal representative
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Patent number: 7666821Abstract: Embodiments of the Present Invention relate to a reversibly thickenable non-polymeric fluid that has low viscosity in strong acid, gels when the acid concentration is reduced by only a small amount, and is subsequently decomposed by the acid. In particular it relates to an aqueous mixture of zwitterionic surfactants, inorganic acids, and organic acids Most particularly it relates to the use of this fluid as a diverting agent for easily-damaged sandstones, for example prior to matrix acidizing.Type: GrantFiled: February 20, 2003Date of Patent: February 23, 2010Assignee: Schlumberger Technology CorporationInventor: Diankui Fu
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Patent number: 7666951Abstract: Coating compositions are disclosed comprising a polyester comprising at least two reactive hydroxyl groups, a material comprising at least two functional groups reactive with the hydroxyl groups of the polyester, and a free acid. Methods of using the coatings, methods for refinishing an article with the coatings, and the substrates coated therewith, are also disclosed.Type: GrantFiled: February 24, 2005Date of Patent: February 23, 2010Assignee: PPG Industries Ohio, Inc.Inventors: Robert E. Jennings, Bruce A. Connelly, Jonathan T. Martz