Patents Examined by Olga Asinovsky
  • Patent number: 7514504
    Abstract: This invention discloses the production and use of a polyethylene composition comprising a metallocene-produced linear low density polyethylene and a multi modal high density polyethylene prepared from either a Ziegler-Natta or a metallocene catalyst system. The resulting polyethylene composition is suitable for preparing articles having improved environmental stress crack resistance, rigidity, contact transparency, gloss as well as good processing capabilities.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: April 7, 2009
    Assignee: Fina Technology, Inc.
    Inventors: Alain Van Sinoy, Christian Koulic
  • Patent number: 7476709
    Abstract: A process for the preparation of an oligonucleotide is provided. The process comprises the assembly of an oligonucleotide attached to a solid support, wherein the solid support is prepared by a process comprising polymerisation of a monomer which comprises a protected hydroxypolyC2-4 alkyleneoxy chain attached to a polymerisable unit wherein the protected hydroxypolyC2-4 alkyleneoxy chain contains from 2 to 10 C2-4 alkyleneoxy groups and wherein the hydroxypolyC2-4 alkyleneoxy chain is protected with an acid-labile protecting group, preferably an optionally substituted trityl group.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: January 13, 2009
    Assignee: Avecia Biotechnology Inc.
    Inventors: David John Moody, Donald Alfred Wellings, Paul McCormac
  • Patent number: 7470749
    Abstract: A polymer electrolyte fuel cell comprising a membrane-form polymer electrolyte, a cathode disposed on one side of the polymer electrolyte, and an anode disposed on the other side of the polymer electrolyte, wherein the cathode comprises a catalyst and an ion exchange resin, and the ion exchange resin is made of a polymer comprising the following segments A and segments B: Segments A: segments made of a polymer having sulfonic acid groups; and Segments B: segments made of a fluoropolymer having substantially no ion exchange groups.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: December 30, 2008
    Assignee: Asahi Glass Company, Limited
    Inventors: Atsushi Watakabe, Takeshi Eriguchi
  • Patent number: 7465767
    Abstract: There are disclosed star shaped thermoplastic elastomers made of acrylic block copolymers obtained by transition metal catalysed radical polymerisation. The elastomers comprise core arms obtained from monomers or mixture of monomers, whose Tg is from about ?65° C. to about ?20° C., and of shell arms obtained from monomers or mixture of monomers, whose Tg is from about 70° C. to about 160° C. The core copolymer has a polydispersity of 2 or higher and the final copolymer has a polydispersity of from 3 to 10.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: December 16, 2008
    Assignee: Cytec Surface Specialties, S.A.
    Inventors: François Simal, Harrell Tweedy, Steven Van Es, Patrice Roose
  • Patent number: 7465768
    Abstract: A novel method of preparing carboxyl-terminated polymers. A monomer is mixed with an organolithium initiator in a hydrocarbon solvent so as to anionically polymerize linear living polymer lithium chains. A trialkyl aluminum compound is also mixed so as to form polymer lithium: aluminate complexes in equilibrium with the linear living polymer lithium chains. When a cyclic anhydride terminator is mixed, the cyclic anhydride terminator preferentially reacts with the C—Li center on a living polymer lithium chain rather than with the C—Al—Li center on a polymer lithium: aluminate complex.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: December 16, 2008
    Assignee: Bridgestone Corporation
    Inventors: James E. Hall, James Oziomek
  • Patent number: 7452958
    Abstract: Regioregular poly(3-alkylthiophenes) and other polythiophenes can be prepared by living polymerization which have good solubility, processability and environmental stability. The polymerization method can afford regioregular poly(3-alkylthiophenes) in high yields. Kinetic study of polymerization revealed the living character of this process. The molecular weight of poly(3-alkylthiophenes) is a function of the molar ratio of the monomer to nickel initiator, and conducting polymers with relatively narrow molecular weight distribution (PDI<1.5) are now readily available. Sequential monomer addition resulted in new block copolymers containing different poly(3-alkylthiophene) segments, which further confirms the “livingness” of this system. Other synthetic methods can be used as well to conduct living polymerization. Blends and electronic devices can be prepared.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: November 18, 2008
    Assignee: Carnegie Mellon University
    Inventors: Richard D. McCullough, Elena E. Sheina, Mihaela C. Iovu
  • Patent number: 7452939
    Abstract: A polyesterified block copolymer represented by the general formula (1), (2) or (3) (for example, polyolefin/polyolefin block copolymer of the following general formula (1)), obtained by an esterification reaction between a terminal maleated polymer and a terminal hydroxylated polymer. Also, a process for producing the same is provided. (1) wherein each of R1 and R2 represents hydrogen or methyl; m is an integer of 10 to 200; n is an integer 10 to 200; k is an integer 5 of to 3000.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: November 18, 2008
    Assignees: San-Ei Kougyou Corporation, Takashi Sawaguchi
    Inventor: Takashi Sawaguchi
  • Patent number: 7442745
    Abstract: The present invention relates to an aminomethyl polystyrene resin wherein aminomethyl group is grafted only on the surface of polystyrene resin, and a preparation process for the same. More particularly, the present invention is directed to a process for preparing aminomethyl polystyrene resin wherein aminomethyl group is grafted only on the surface of polystyrene resin, which comprises a step for grafting amidomethyl group to surface of polystyrene resin and a step for hydrolysis of the amidomethyl group grafted on the surface of polystyrene resin.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: October 28, 2008
    Assignee: BeadTech Inc.
    Inventors: Yoon-Sik Lee, Sun-Jong Ryoo, Tae-Kyung Lee
  • Patent number: 7439301
    Abstract: Disclosed is an elastomeric hydrogenated block copolymer capable of being directly extruded or molded with a minimum of additives and having both high elasticity and low permanent set. The hydrogenated block copolymers have high melt flows allowing for ease in processing the hydrogenation block copolymers in melt processes such as extrusion and molding.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: October 21, 2008
    Assignee: Kraton Polymers U.S. LLC
    Inventor: Dale L. Handlin, Jr.
  • Patent number: 7439307
    Abstract: Articles made from propylene ethylene copolymers with an ethylene content between 8 and 32 mole % have been grafted with maleic anhydride and a peroxide. The functionality level is higher than what is reported with polypropylene.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: October 21, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jean-Roch H. Schauder, Sudhin Datta
  • Patent number: 7423089
    Abstract: This invention relates to preparation of rubber compositions comprised of EPDM and conjugated diene-based elastomer, particularly including cis 1,4-polyisoprene rubber, and particularly natural cis 1,4-polyisoprene rubber, blends and pneumatic rubber tire with an outer, visible sidewall layer of a rubber composition comprised of such rubber composition. For such preparation, a combination of at least two diverse EPDM elastomers is used together with a phase mixing process comprised of sequential phase mixing or parallel phase mixing in the sense of reinforcement filler and sulfur curatives.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: September 9, 2008
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Junling Zhao, Aaron Scott Puhala, Bina Patel Botts, Brad Stephen Gulas
  • Patent number: 7414093
    Abstract: A second order modified block copolymer which can be obtained by reacting a first order modified block copolymer with a second order modifier, wherein the first order modified block copolymer comprises a base block copolymer and a functional group-containing first order modifier group bonded to the base block co-polymer, wherein the base block copolymer comprises at least one polymer block comprised mainly of vinyl aromatic hydrocarbon monomer units and at least one polymer block comprised mainly of conjugated diene monomer units, and wherein the second order modifier has a specific functional group which is reactive to the functional group of the first order modifier group of the first order modified block copolymer. A second order modified block copolymer containing polymer composition comprising the second order modified block copolymer as well as a thermoplastic resin and/or a rubbery polymer.
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: August 19, 2008
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Nobuaki Kubo, Yasuhiro Kusanose, Shigeo Nakajima, Takaaki Matsuda, Shigeki Takayama, Toshinori Shiraki
  • Patent number: 7402624
    Abstract: Graft copolymers with segmented (or block) arms and a process for preparing the same. Such polymers are particularly useful in formulating air-dry clear coat and color coat lacquers used in automotive refinishing.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: July 22, 2008
    Assignee: E.I. du Pont de Nemours & Company
    Inventor: Sheau-Hwa Ma
  • Patent number: 7399792
    Abstract: An object of the present invention is to provide a novel solid reagent capable of solving the problems of conventional solid reagents based on resin beads. The present invention relates to a solid reagent comprising an organic polymer base in which a polymer side chain is introduced onto the backbone of the organic polymer base via graft polymerization and a reactive functional group is introduced onto the polymer side chain. The organic polymer base is preferably in the form of a fiber, a woven or nonwoven fabric consisting of an assembly of fibers, a porous membrane or a hollow fiber membrane. The graft polymerization is preferably a radiation-induced graft polymerization. Solid reagents according to the present invention can be used in various organic synthetic reactions.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: July 15, 2008
    Assignee: Ebara Corporation
    Inventors: Makoto Komatsu, Kazuyoshi Takeda
  • Patent number: 7393901
    Abstract: A pressure sensitive adhesive is described comprising an acrylate copolymer, silica nanoparticles and crosslinked by a polyfunctional aziridine crosslinking agent.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: July 1, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Timothy D. Filiatrault, Kevin M. Lewandowski, Kelly S. Anderson, Babu N. Gaddam, Eugene G. Joseph
  • Patent number: 7393902
    Abstract: A rubber composition for a base tread which achieves improved steering stability and rolling resistance properties and a tire containing the same wherein the rubber composition includes a rubber component containing (a) 20 to 60% by weight of a polybutadiene rubber containing 2.5 to 20% by weight of a 1,2-syndiotactic polybutadiene crystal, (b) 5 to 80% by weight of a tin-modified polybutadiene rubber polymerized by a lithium initiator, in which the amount of a tin atom is 50 to 3000 ppm, the amount of a vinyl bond is 5 to 50% by weight and molecular weight distribution (Mw/Mn) is at most 2, and (c) 10 to 75% by weight of a rubber other than (a) and (b).
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: July 1, 2008
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Tatsuya Miyazaki
  • Patent number: 7393898
    Abstract: To provide a block copolymer composition having a good balance in transparency and impact resistance, and particularly having an excellent impact resistance, by making a molded product of injection molding under high sear condition in such a manner as to hardly generate anisotropy. A block copolymer composed of a hard segment block comprising a block made mainly of a vinyl aromatic hydrocarbon and a soft segment block comprising a block made mainly of a conjugated diene, characterized by having a remarkably improved impact resistance without degrading transparency in respect of not only an extrusion-molded product and a blow-molded product but also an injection-molded product, by blending two kinds of block copolymers having a hard segment block of a specific structure.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: July 1, 2008
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Jun Watanabe, Hiroyuki Kurimura, Shigeru Suzuki, Takeshi Oda, Norihiro Shimizu
  • Patent number: 7393897
    Abstract: The method for manufacturing a thermoplastic elastomer composition of the present invention comprises continuously feeding a mixture comprising pelletized olefinic resin (A), a pulverized product (B) obtained by pulverizing bulk olefinic rubber, and a crosslinking agent (C) into a continuous kneading machine, and performing a dynamic heat treatment to yield the thermoplastic elastomer composition. An olefinic thermoplastic elastomer composition having excellent tensile characteristics and molded appearance can be manufactured with high productivity by the method of the present invention.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: July 1, 2008
    Assignee: Mitsui Chemicals, Inc.
    Inventor: Yuichi Ito
  • Patent number: 7390850
    Abstract: A thermoplastic elastomer composition comprises a blend of a thermoplastic component with a cured elastomer component characterised in that the elastomer component prior to curing comprises a major proportion of a main elastomer and a minor proportion of a high molecular weight reactive polymer which shows a higher crosslinking efficiency in free-radical induced vulcanisation than the main elastomer. Preferably, the high molecular weight reactive polymer comprises from (3) to (15), and more preferably (4) to (10), parts by weight per one hundred parts of the total elastomer component of the composition. The use of the high molecular weight reactive polymer in the composition improves the low temperature performance of the composition and gives improvements to the processing behaviour, the resistance to stiffening at low temperatures and recovery/relaxation properties. Preferably, the high molecular weight reactive polymer is miscible with the main elastomer in the elastomer component.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: June 24, 2008
    Assignee: Tun Abdul Razak Research Centre
    Inventors: Stuart Cook, Andrew Tinker, Jaymini Patel
  • Patent number: 7390540
    Abstract: Various embodiments of the present invention are directed to methods for manufacturing complex, anisotropic materials with desirable properties for information storage, processing, and display. Certain of these methods involve employing a magnetic field during manufacture to induce desired orientations of precursors, subunits, and/or molecular subassemblies. The applied magnetic field steers the precursors, subunits, and/or molecular subassemblies into desirable orientations while the precursors, subunits, and/or molecular subassemblies are assembled or self-assemble into a complex, anisotropic material. One embodiment of the present invention is a class of new, complex, well-ordered, network-like materials that include a ferromagnetic-material-based framework in which organic and/or organometallic compounds are organized.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: June 24, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Patricia A. Beck, Sean Zhang