Patents Examined by Helen L. Pezzuto
  • Patent number: 7781551
    Abstract: Biocompatible copolymers are manufactured to include a zwitterionic monomer and an alkoxy acrylate monomer. The alkoxy acrylate monomer can be a 2-methoxyethyl methacrylate (MOEMA) or 2-ethoxyethyl methacrylate (EOEMA). Alternatively, the alkoxy acrylate can be 2-methoxyethyl acrylate (MOEA) or 2-ethoxyethyl acrylate (EOEA). The alkoxy acrylate monomers advantageously give the zwitterionic copolymers greater ductility, strength, and toughness while maintaining a desired amount of hydrophilicity. The improved toughness allows the zwitterionic copolymers to be processed without cross-linking, which improves the elongation properties of the zwitterionic copolymer, and reduces the risk of cracking during use.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: August 24, 2010
    Assignee: Abbott Laboratories
    Inventors: Stephen Pacetti, Wouter Roorda
  • Patent number: 7781531
    Abstract: Phosphate-containing co-polymers useful for making denture bases, denture liners and tissue conditioners with phosphate anion-charged surfaces are disclosed. The phosphate anions enable the denture bases, denture liners and tissue conditioners to adsorb cationic antimicrobial molecules. Dentures, denture bases materials, denture liners and tissue conditioners made of the above co-polymers are also disclosed. Further disclosed are methods for synthesizing the co-polymer(s) and for making the denture bases, denture liners and tissue conditioners.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: August 24, 2010
    Assignee: Marquette University
    Inventors: Antony R. Periathamby, Andrew R. Dentino
  • Patent number: 7771548
    Abstract: Disclosed is a quenching medium for treating a heated metal part, said medium comprising water and a polyacrylate terpolymer comprising acrylamide and/or methacrylamide monomer units, acrylic acid and/or methacrylic acid monomer units and alkyl alkoxylate allyl ether monomer units where the acid groups are in the form of an alkali metal salt and where the alkyl alkoxylate allyl ether monomers are of the formula where n is an integer from 1 to about 30, R is ethylene, propylene or butylene and G is an alkyl group of 8 to 30 carbon atoms. Also disclosed is a method for quenching a heated metal part, which process comprises immersing said metal part in the quenching medium. Also disclosed are the polyacrylate ternary copolymers.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: August 10, 2010
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Robert Cockcroft, David Petty, Frank J. L. Leroy, Francis Mark Prince, Nils Hoeck, Paul Guedj
  • Patent number: 7762332
    Abstract: A thermal insulating packer fluid contains at least one water superabsorbent polymer and optionally water and/or brine, and a viscosifying polymer. The composition is capable of inhibiting unwanted heat loss from production tubing or uncontrolled heat transfer to outer annuli. The viscosity of the composition is sufficient to reduce the convection flow velocity within the annulus.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: July 27, 2010
    Assignee: BJ Services Company LLC
    Inventors: Cristian A. Lopez, Xiaolan Wang, Qi Qu, Paul H. Javora
  • Patent number: 7763688
    Abstract: The present invention describes the synthesis of solvent soluble copolymers containing multiple unsaturations. These copolymers contain reactive vinyl groups, which can be further reacted in a second stage polymerization. The process involves copolymerization of a vinyl monomer with an inclusion complex of a monomer having multiple unsaturations and a cyclic macromolecular compound to yield soluble polymers. These polymers may be cast into films, membranes or may be converted in micro or nanoparticles and then crosslinked in a second step polymerization.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: July 27, 2010
    Assignee: Council of Scientific and Industrial Research
    Inventors: Mohan G. Kulkarni, Rohini N. Karmalkar, Sunita S. Satav
  • Patent number: 7763694
    Abstract: The present invention provides compounds having in their molecule a structure contributing to high hydrophilicity, and having high photopolymerizability, as well as polymers of such compounds, and a method for producing the compound. The compounds are diol (meth)acrylate having a urethane bond represented by the formula (1), and cyclic ketal (meth)acrylate having a urethane bond represented by the formula (2): (R1: H, —CH3; R2: —(CH2)n-; R3: —(CH2)m-; n: 1-4; m: 1-8; (AO): C2-C4 oxyalkylene group; x: 0-1000; R4, R5: H, —CH3, —C2H5).
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: July 27, 2010
    Assignee: NOF Corporation
    Inventors: Eui-chul Kang, Atsuhiko Ogura, Shingo Kataoka, Takashi Iwata
  • Patent number: 7763695
    Abstract: The present invention provides compounds having in their molecule a structure contributing to high hydrophilicity, and having high photopolymerizability, as well as polymers of such compounds, and a method for producing the compound. The compounds are diol (meth)acrylate having a urethane bond represented by the formula (1), and cyclic ketal (meth)acrylate having a urethane bond represented by the formula (2): (R1: H, —CH3; R2: —(CH2)n-; R3: —(CH2)m-; n: 1-4; m: 1-8; (AO): C2-C4 oxyalkylene group; x: 0-1000; R4, R5: H, —CH3, —C2H5).
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: July 27, 2010
    Assignee: NOF Corporation
    Inventors: Eui-chul Kang, Atsuhiko Ogura, Shingo Kataoka, Takashi Iwata
  • Patent number: 7754624
    Abstract: Fluoroalkyl amidoalkyl alcohols of the formula are disclosed and their corresponding (meth)acrylate esters. These fluoroalkyl amidoalkyl (meth)acrylate monomers can be copolymerized with a wide variety of conventional ethylenically unsaturated monomers. The resulting copolymers are useful as water, oil- and grease-proofing agents for paper, textiles and hard surfaces such as masonry and wood.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: July 13, 2010
    Inventor: Shobha Kantamneni
  • Patent number: 7754838
    Abstract: A composition comprising a copolymer having repeating units in any sequence of Formula I wherein Rf is a straight or branched perfluoroalkyl group having from about 1 to about 20 carbon atoms, or a mixture thereof, which is optionally interrupted by at least one oxygen atom, X3 is oxygen or X1, each X1 is independently an organic divalent linking group having from about 1 to about 20 carbon atoms, optionally containing an oxygen, nitrogen, or sulfur, or a combination thereof, G is F or CF3, A is an amide, j is zero or positive integer, X2 is an organic linking group, Y is O, N or S, h is zero when Y is N, and h is one when Y is O or S, Z is H, a straight or branched alkyl group having from about 1 to about 4 carbon atoms, or halide, B is H or wherein Rf, X1, X3, G, A, and j are as defined above, provided that when B is H, j is a positive integer, m is a positive integer, q is zero or a positive integer when Y is O, and q is a positive integer when Y is N or S, p is zero or a positive integer
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: July 13, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Weiming Qiu
  • Patent number: 7754917
    Abstract: Fluoroalkyl amidoalkyl alcohols of the formula are disclosed and their corresponding (meth)acrylate esters. These fluoroalkyl amidoalkyl (meth)acrylate monomers can be copolymerized with a wide variety of conventional ethylenically unsaturated monomers. The resulting copolymers are useful as water, oil- and grease-proofing agents for paper, textiles and hard surfaces such as masonry and wood.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: July 13, 2010
    Assignee: Huntsman International LLC
    Inventor: Shobha Kantamneni
  • Patent number: 7750101
    Abstract: Disclosed is a polycyclic ester containing a cyano group and a lactone skeleton, represented by following Formula (1): wherein Ra represents, for example, a hydrogen atom or an alkyl group having one to six carbon atoms which may have a halogen atom; R1s each represent, for example, a halogen atom or an alkyl or haloalkyl group having one to six carbon atoms; “m” is the number of R1s; “n” is the number of cyano groups; and CH2?C(Ra)COO— group may have either of an endo conformation and an exo conformation. Accordingly, there is provided a novel polycyclic ester containing a cyano group and a lactone skeleton which is useful typically as a monomeric component for highly functional polymers. A polymer, for example, derived from this compound is highly soluble in an organic solvent while remaining stable typically to chemicals and exhibits improved hydrolyzability and/or improved solubility in water after hydrolysis.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: July 6, 2010
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Keizo Inoue, Takahiro Iwahama, Masamichi Nishimura, Kiyoharu Tsutsumi
  • Patent number: 7750079
    Abstract: Compositions, such as lens precursor compositions, and methods for producing lens precursor compositions have been invented. The present methods include forming a premix composition, which can include one or more monomeric components, forming a macromer composition, which includes one or more silicon containing macromers, forming a premix/initiator composition, which can include a photoinitiator, and contacting the premix/initiator composition with the macromer composition to form a polymerizable monomer-containing composition useful in the production of producing silicone hydrogel contact lenses.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: July 6, 2010
    Assignee: CooperVision International Holding Company, LP
    Inventors: Sarah L. Almond, John H. D. Browning
  • Patent number: 7750090
    Abstract: The present invention relates to a novel class of water compatible molecularly imprinted polymers (AquaMIPs) capable of selectively binding target molecules such as riboflavin, or analogues thereof, in water or aqueous media, their synthesis and use thereof in food processing and extraction or separation processes.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: July 6, 2010
    Assignee: MIP Technologies AB
    Inventors: Börje Sellergren, Panagiotis Manesiotis, Andrew J Hall
  • Patent number: 7745555
    Abstract: The present invention relates to novel materials particularly useful for ophthalmic applications and methods for making and using the same. More particularly, the present invention relates to relatively soft, optically transparent, foldable, high refractive index materials particularly suited for use in the production of intraocular lenses, contact lenses, and other ocular implants and to methods for manufacturing and using the same.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: June 29, 2010
    Assignee: Key Medical Technologies, Inc.
    Inventors: Khalid Mentak, Anthony Keslinke, Kevin Phan
  • Patent number: 7741421
    Abstract: The methods for producing macromolecule identifying polymers according to the present invention comprise the steps of polymerizing a starting monomer in an aqueous solution in the presence of a macromolecule, a crosslinking agent, and a radical polymerization initiator to produce a polymer containing the macromolecule in its interior; and removing the macromolecule from the polymer containing the macromolecule to thereby produce the macromolecule identifying polymer having a molecular imprint of the macromolecule. In this method, the crosslinker has a solubility in water at 25° C. of 100% by mass or higher.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: June 22, 2010
    Assignee: Reqmed Company, Ltd.
    Inventors: Norihiko Minoura, Alexandre Rachkov, Tadashi Matsumoto, Kaori Endo, Hu Minjie
  • Patent number: 7740913
    Abstract: A method for imparting resistance to staining to a substrate comprising contacting the substrate with a copolymer comprising the monomers of Formula wherein D is at least one vinyl monomer selected from the group consisting of aryl olefin, alpha olefin and diene, each M is independently H, Ca, Mg, Al, Na, or K, each R1 is independently H, C1-C6 alkyl, or C1-C6 hydroxyalkyl, each R2 is independently linear or branched C1-C12 alkyl, C1-C6 hydroxyalkyl, C6F5, arylalkyl, C6H4OH, R3COOH, or R3SO3H, or R1 and R2 are linked together to form a morpholino or pyrrolidino ring, R3 is linear or branched C1-C12 alkyl, CH(COOH)CH2CH2, C6H4, or C6H3(OH), h1+h2 is h, h is a positive integer, k is zero or a positive integer, i and j are each independently zero or a positive integer, provided that the total of 1) h÷(k+h+i+j) is from about 0.005 to about 0.7, 2) k÷(k+h+i+j) is from about 0.3 to about 0.6, 3) [i+j]÷(k+h+i+j) is 0 to about 0.6, and provided that the sum of 1)+2)+3) is 1.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: June 22, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Timothy Edward Hopkins, Stephen Ernest Jacobson, Melea Rena Langley, Peter Michael Murphy
  • Patent number: 7737237
    Abstract: The present invention concerns a controlled structure copolymer comprising at least two different parts, a first part A, amphoteric or zwitterionic, including anionic or potentially anionic units, and cationic or potentially cationic units, or zwitterionic units, and another part B, non amphoteric or zwitterionic. Said copolymer further exhibits a high potential for adaptation, through variation in its composition, in order to improve or modify the properties of compositions in which it is introduced.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: June 15, 2010
    Assignee: Phodia Chimie
    Inventor: Mathias Destarac
  • Patent number: 7732548
    Abstract: Water-soluble copolymers and terpolymers as stabilizers for aqueous building material systems and water-based paint and coating systems are described. Advantages of the copolymers and terpolymers used according to the invention compared to conventional products are firstly the very good stabilizing properties of the building material systems or water-based paint and coating systems produced correspondingly and secondly the fact that the viscosity of the systems is barely increased, so that these have excellent processability.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: June 8, 2010
    Assignee: Construction Research & Technology GmbH
    Inventors: Michael Schinabeck, Stefan Friedrich, Irene Gattinger, Andreas Tselibidis, Gerhard Albrecht, Alfred Kern
  • Patent number: 7728091
    Abstract: Methods for polymerization of phosphaalkenes using initiators are provided. Also provided are polymers and co-polymers in which the polymer backbone contains tracts of carbon and phosphorous atoms in approximately equimolar amounts. C—P bonds in the polymers of this invention may be predominantly in a head-to-tail arrangement or mixed arrangements. Co-polymers may comprise polyolefin monomer units.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: June 1, 2010
    Assignee: The University of British Columbia
    Inventors: Derek Gates, Chi-Wing Tsang, Mandy Yam
  • Patent number: 7714090
    Abstract: A (meth)acrylate copolymer obtained by copolymerization of a monomer mixture containing a monomer (A) of the general formula (I), wherein R1 is a hydrogen atom or methyl, R2 is a linear or branched alkylene group having 1 to 8 carbon atoms and Y is a single bond or an oxygen atom, a monomer (B) copolymerizable with the monomer (A) and a crosslinking monomer (C).
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: May 11, 2010
    Assignee: Hoya Corporation
    Inventors: Hidetoshi Iwamoto, Yoko Katsuki