Patents by Inventor Steven Luo

Steven Luo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • PROCESS AND CATALYST SYSTEM FOR POLYDIENE PRODUCTION
    Publication number: 20120165484
    Abstract: A process for preparing a polydiene, the process comprising the step of polymerizing conjugated diene monomer with a lanthanide-based catalyst system in the presence of a vinylsilane, an allylsilane, or an allylvinylsilane.
    Type: Application
    Filed: August 24, 2010
    Publication date: June 28, 2012
    Inventor: Steven Luo
  • POLYMERS FUNCTIONALIZED WITH OXIME COMPOUNDS CONTAINING AN ACYL GROUP
    Publication number: 20120149833
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of polymerizing monomer to form a reactive polymer; and reacting the reactive polymer with a protected oxime compound containing an acyl group.
    Type: Application
    Filed: December 10, 2010
    Publication date: June 14, 2012
    Applicant: Bridgestone Corporation
    Inventor: Steven Luo
  • Polymers functionalized with nitroso compounds
    Patent number: 8188195
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer with a coordination catalyst to form a reactive polymer; and (ii) reacting the reactive polymer with a nitroso compound.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: May 29, 2012
    Assignee: Bridgestone Corporation
    Inventor: Steven Luo
  • Bulk polymerization process for producing polydienes
    Patent number: 8188201
    Abstract: A process for preparing a polydiene, the process comprising the step of polymerizing conjugated diene monomer with a lanthanide-based catalyst system including the combination or reaction product of: (a) a lanthanide compound selected from the group consisting of lanthanide organophosphates, lanthanide organophosphonates, and lanthanide organophosphinates, (b) an alkylating agent, and (c) a chlorine-containing compound, where said step of polymerizing takes place within a polymerization mixture that includes less than 20% by weight of solvent based on the total weight of the polymerization mixture.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: May 29, 2012
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Kevin McCauley, Jason T. Poulton
  • Functionalized polymer
    Patent number: 8183326
    Abstract: A polymer includes directly bonded aromatic pendent groups and at least one moiety defined by one of the following formulas >N—N?CR1R2 or —N?N—CR1R2— where R1 and R2 (a) are independently H or a substituted or unsubstituted alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl, allyl, aralkyl, alkaryl, or alkynyl group, or (b) together form a substituted or unsubstituted alkylene, alkenylene, cycloalkylene, cycloalkenylene, or arylene group. The moiety can be attached to the polymer through one or both of the two open bonds and, where it is attached through only one bond, the other bond attaches to a hydrogen atom, i.e., the moiety is at a terminus of the polymer. Such polymers can be used to provide compositions that also include particulate fillers.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: May 22, 2012
    Assignee: Bridgestone Corporation
    Inventors: Yuan-Yong Yan, Dennis R. Brumbaugh, Steven Luo
  • BRANCHED POLYMERS AND METHODS FOR THEIR SYNTHESIS AND USE
    Publication number: 20120108755
    Abstract: Branched polymers including multi-branched polymers, functionalized branched polymers, star-branched polymers, and dendigraft polymers. Methods for the synthesis of branched polymers and method for the use of branched polymers in tire components are also included.
    Type: Application
    Filed: January 6, 2012
    Publication date: May 3, 2012
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Christopher G. Robertson, Sandra Warren, James Hall, Georg G. A. Böhm, Mark Arigo, Steven Luo, Hiroshi Mouri, Jessica Kurasch, Noriko Mori
  • RUBBER COMPOSITIONS INCLUDING A POLYMERIC COMPONENT HAVING A MULTI-MODAL MOLECULAR WEIGHT DISTRIBUTION
    Publication number: 20120108736
    Abstract: A vulcanizable composition of matter comprising a rubber component, a filler, a curative for the rubber, where the rubber component includes a multi-modal polymer including at least two distinct peak molecular weights within a range defined by a lower limit of 80 kg/mole and an upper limit of 500 kg/mole.
    Type: Application
    Filed: December 28, 2009
    Publication date: May 3, 2012
    Applicant: Bridgestone Corporation
    Inventors: Zhong-Ren Chen, Kevin McCauley, Mark Smale, Michael W. Hayes, Steven Luo
  • Method for bulk polymerization
    Patent number: 8163855
    Abstract: A method for polymerizing conjugated diene monomer into polydienes, the method comprising: polymerizing conjugated diene monomer within a liquid-phase polymerization mixture that includes conjugated diene monomer, a lanthanide-based catalyst system, dicyclopentadiene or substituted dicyclopentadiene, and optionally organic solvent, with the proviso that the organic solvent, if present, is less than about 20% by weight based on the total weight of the polymerization mixture.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: April 24, 2012
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Mark W. Smale, Kevin McCauley, Randhir Shetty
  • POLYMERS FUNCTIONALIZED WITH PROTECTED OXIME COMPOUNDS
    Publication number: 20120077941
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of (i) polymerizing conjugated diene monomer by employing a lanthanide-based catalyst to form a reactive polymer, and (ii) reacting the reactive polymer with a protected oxime compound.
    Type: Application
    Filed: December 2, 2011
    Publication date: March 29, 2012
    Inventors: Steven Luo, Yuan-Yong Yan, Jason T. Poulton, Eiju Suzuki
  • POLYMERS FUNCTIONALIZED WITH NITRILE COMPOUNDS COMTAINING A PROTECTED AMINO GROUP
    Publication number: 20120059112
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of (i) polymerizing monomer with a coordination catalyst to form a reactive polymer; and (ii) reacting the reactive polymer with a nitrile compound containing a protected amino group.
    Type: Application
    Filed: January 22, 2010
    Publication date: March 8, 2012
    Inventors: Steven Luo, Eiju Suzuki, Dennis R. Brumbaugh
  • Polymers functionalized with protected oxime compounds
    Patent number: 8088868
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of (i) polymerizing conjugated diene monomer by employing a lanthanide-based catalyst to form a reactive polymer, and (ii) reacting the reactive polymer with a protected oxime compound.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: January 3, 2012
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Yuan-Yong Yan, Jason T. Poulton, Eiju Suzuki
  • Process for producing blends of syndiotactic, 1,2-polybutadiene and rubbery elastomers
    Patent number: 8067503
    Abstract: Blends of syndiotactic 1,2-polybutadiene and rubbery elastomers are prepared by a process that comprises polymerizing 1,3-butadiene monomer into syndiotactic 1,2-polybutadiene within a rubber cement of an elastomeric terpolymer by using a chromium-based, molybdenum-based, or iron-based catalyst composition. Polymer composition comprising the blend with improved properties is also provided.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: November 29, 2011
    Assignee: Bridgestone Corporation
    Inventors: Christine Rademacher, Steven Luo, Zhong-Ren Chen, Walter Tomaszewski, Edward Kelley
  • POLYMERS FUNCTIONALIZED WITH POLYCYANO COMPOUNDS
    Publication number: 20110288200
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of polymerizing monomer to form a reactive polymer, and reacting the reactive polymer with a polycyano compound.
    Type: Application
    Filed: January 22, 2010
    Publication date: November 24, 2011
    Inventor: Steven Luo
  • Rubber Composition Having Improved Crack Resistance
    Publication number: 20110237729
    Abstract: A method includes: (a) mixing in a first step a first polymer and a filler, (b) mixing in a second step a second polymer and a polyhydroxy compound, and (c) mixing in a third mixing step the mixtures resulting from steps (a) and (b) and optionally additional filler, wherein said first polymer and second polymer may be the same polymer or different polymers, and wherein steps (a) and (b) can occur simultaneously or consecutively.
    Type: Application
    Filed: December 30, 2010
    Publication date: September 29, 2011
    Inventors: Zhong-Ren Chen, Steven Luo
  • Method for producing functionalized cis-1,4-polydienes having high cis-1,4-linkage content and high functionality
    Patent number: 8017695
    Abstract: This invention relates to a method for producing functionalized cis-1,4-polydienes having a combination of a high cis-1,4-linkage content and a high functionality, the resulting polymers and the vulcanized products containing the polymers. The functionalized cis-1,4-polydienes of the present invention are produced by a method comprising the steps of: (1) preparing a reactive polymer by polymerizing conjugated diene monomer with a lanthanide-based catalyst in the presence of less than 20% by weight of organic solvent based on the total weight of monomer, organic solvent, and resulting polymer, where the lanthanide-based catalyst is the combination of or reaction product of (a) a lanthanide compound, (b) an aluminoxane, (c) an organoaluminum compound other than an aluminoxane, and (d) a halogen-containing compound; and (2) contacting the reactive polymer with a functionalizing agent.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: September 13, 2011
    Inventors: Steven Luo, Junko Kurazumi, Yoichi Ozawa, Timothy L. Tartamella, Mark Smale, Kevin McCauley
  • RUBBER ARTICLES SUBJECTED TO REPEATED DEFORMATION AND COMPOSITIONS FOR MAKING THE SAME
    Publication number: 20110210486
    Abstract: An air spring having an airsleeve, wherein at least one layer of said airsleeve includes the vulcanization product of an elastomer and syndiotactic 1,2-polybutadiene.
    Type: Application
    Filed: August 14, 2009
    Publication date: September 1, 2011
    Inventors: Sheel Agarwal, Steven Luo, John Rensel
  • FUNCTIONALIZED POLYMERS AND PROCESSES FOR MAKING SAME
    Publication number: 20110172369
    Abstract: A macromolecule includes at least one polymer chain with at least one functionality. The polymer can include unsaturated mer units and can be provided via anionic and pseudo-living polymerization techniques. In either technique, the functionality can include at least one 5- or 6-membered ring which includes a secondary amine group and at least one additional heteroatom; in the latter technique, the functionality can include a hydrazone radical. Such polymers can be used to provide compositions that also include particulate fillers, such compositions being useful for the production of vulcanizates.
    Type: Application
    Filed: March 30, 2009
    Publication date: July 14, 2011
    Applicant: Bridgestone Corporaion
    Inventors: Yuan-Yong Yan, Steven Luo, Mark T. Arigo
  • Process for producing polydienes
    Patent number: 7977437
    Abstract: A process for preparing a polydiene, the process comprising the step of polymerizing conjugated diene monomer in the presence of a dihydrocarbyl ether, where said step of polymerizing employs a lanthanide-based catalyst system.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: July 12, 2011
    Inventors: Steven Luo, Kevin M. McCauley, Jason T. Poulton
  • POLYMERS FUNCTIONALIZED WITH POLYOXIME COMPOUNDS AND METHODS FOR THEIR MANUFACTURE
    Publication number: 20110152449
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of polymerizing monomer to form a reactive polymer, and reacting the reactive polymer with a protected polyoxime compound.
    Type: Application
    Filed: December 21, 2009
    Publication date: June 23, 2011
    Applicant: Bridgestone Corporation
    Inventor: Steven Luo
  • POLYMERS FUNCTIONALIZED WITH IMIDE COMPOUNDS CONTAINING A PROTECTED AMINO GROUP
    Publication number: 20110144282
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of preparing a reactive polymer and reacting the reactive polymer with an imide compound containing a protected amino group.
    Type: Application
    Filed: February 22, 2011
    Publication date: June 16, 2011
    Inventor: Steven LUO