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).

  • Processable rubber composition
    Patent number: 7932316
    Abstract: A composition that includes functionalized polymers and one or more types of particulate filler exhibits both an increased gum Mooney viscosity and a decreased compound Mooney viscosity relative to a comparable composition that includes only one such functionalized polymer. The functionalized polymers include first and second types of functionalities which exhibit a non-covalent interaction that has a bond energy of from about 0.1 to about 20 kJ/mol.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: April 26, 2011
    Assignee: Bridgestone Corporation
    Inventors: Yuan-Yong Yan, Steven Luo
  • FUNCTIONALIZED POLYMERS AND METHODS FOR THEIR MANUFACTURE
    Publication number: 20110077325
    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 carboxylic or thiocarboxylic ester containing a silylated amino group.
    Type: Application
    Filed: September 30, 2009
    Publication date: March 31, 2011
    Applicant: Bridgestone Corporation
    Inventor: Steven Luo
  • Polymers functionalized with imide compounds containing a protected amino group
    Patent number: 7906592
    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: Grant
    Filed: July 3, 2008
    Date of Patent: March 15, 2011
    Assignee: Bridgestone Corporation
    Inventor: Steven Luo
  • Process and catalyst system for polydiene production
    Patent number: 7902309
    Abstract: Compositions and polydiene production processes involving catalyst systems comprising at least one lanthanide-containing compound, at least one alkylating agent, at least one halogen source, and at least one N,N-dihydrocarbylhydroxylamine.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: March 8, 2011
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Jason T. Poulton, Daniel F. Graves
  • METHOD FOR BULK POLYMERIZATION
    Publication number: 20110046327
    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: Application
    Filed: April 6, 2009
    Publication date: February 24, 2011
    Inventors: Steven Luo, Mark W. Smale, Kevin McCauley, Randhir Shetty
  • Polyhydroxy compounds as polymerization quenching agents
    Patent number: 7879958
    Abstract: A method for quenching an active polymerization mixture, the method comprising introducing a polyhydroxy compound to an active polymerization mixture.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: February 1, 2011
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Timothy L. Tartamella, Mark W. Smale, Kevin M. McCauley, Zhong-Ren Chen
  • Functionalized polymers
    Patent number: 7879952
    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 an azine compound.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: February 1, 2011
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Ryuji Nakagawa, Jason T. Poulton, Eiju Suzuki, Yuan-Yong Yan
  • POLYMERS FUNCTIONALIZED WITH HALOSILANES CONTAINING AN AMINO GROUP
    Publication number: 20100317818
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of preparing a reactive polymer, and reacting the reactive polymer with a halosilane compound containing an amino group.
    Type: Application
    Filed: June 18, 2008
    Publication date: December 16, 2010
    Inventors: Terrence Hogan, Steven Luo, Yoichi Ozawa, Junko Matsushita, Ryuji Nakagawa, Ken Tanaka, Eiju Susuki
  • FUNCTIONALIZED POLYMER AND METHODS FOR MAKING AND USING
    Publication number: 20100311899
    Abstract: A functionalized polymer includes a polymer chain and a terminal functionality that includes at least one disilylamino group. The polymer can be the reaction product of a terminally active polymer chain and a compound that includes at least one disilylamino group and a group capable of reacting with terminally active polymers. Methods for making and using such polymers also are provided, as are compositions containing the polymer and one or more types of filler particles as well as vulcanizates provided from such compositions.
    Type: Application
    Filed: December 26, 2008
    Publication date: December 9, 2010
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Steven Luo, Dennis R. Brumbaugh, Michael W. Hayes, Yoichi Ozawa, Jason T. Poulton
  • POLYMERS FUNCTIONALIZED WITH HETEROCYCLIC NITRILE COMPOUNDS
    Publication number: 20100280217
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of preparing a reactive polymer and reacting the reactive polymer with a heterocyclic nitrile compound.
    Type: Application
    Filed: October 14, 2008
    Publication date: November 4, 2010
    Inventors: Steven Luo, Ryouji Tanaka, Kouichirou Tani
  • Process for producing polydienes
    Patent number: 7825201
    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 takes place within a polymerization mixture that includes less than 20% by weight of organic solvent based on the total weight of the polymerization mixture, and where said step of polymerizing employs a lanthanide-based catalyst system that includes the combination of or reaction product of ingredients including (a) a lanthanide compound, (b) an aluminoxane, (c) an organoaluminum compound other than an aluminoxane, and (d) a bromine-containing compound selected from the group consisting of elemental bromine, bromine-containing mixed halogens, and organic bromides.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: November 2, 2010
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Kevin M. McCauley, Jason T. Poulton
  • PROCESS FOR PRODUCING POLYDIENES
    Publication number: 20100273963
    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: Application
    Filed: June 15, 2010
    Publication date: October 28, 2010
    Applicant: Bridgestone Corporation
    Inventors: Steven Luo, Kevin M. McCauley, Jason T. Poulton
  • Method for bulk polymerization
    Patent number: 7807763
    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 7, 2008
    Date of Patent: October 5, 2010
    Assignee: Bridgestone Corporation
    Inventors: Mark W. Smale, Steven Luo, Kevin McCauley, Randhir Shetty
  • PROCESS AND CATALYST SYSTEM FOR POLYDIENE PRODUCTION
    Publication number: 20100216956
    Abstract: Compositions and polydiene production processes involving catalyst systems comprising at least one lanthanide-containing compound, at least one alkylating agent, at least one halogen source, and at least one N,N-dihydrocarbylhydroxylamine.
    Type: Application
    Filed: February 23, 2009
    Publication date: August 26, 2010
    Inventors: Steven Luo, Jason T. Poulton, Daniel F. Graves
  • POLYMERS FUNCTIONALIZED WITH NITROSO COMPOUNDS
    Publication number: 20100168378
    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: Application
    Filed: December 31, 2008
    Publication date: July 1, 2010
    Inventor: Steven LUO
  • Process for producing polydienes
    Patent number: 7741418
    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: December 31, 2007
    Date of Patent: June 22, 2010
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Kevin M. McCauley, Jason T. Poulton
  • Polymers functionalized with nitro compounds
    Patent number: 7732534
    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 nitro compound.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: June 8, 2010
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Ryuji Nakagawa
  • Branched Polymers and Methods for Their Synthesis and Use
    Publication number: 20100137520
    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: October 5, 2007
    Publication date: June 3, 2010
    Inventors: Christopher G. Robertson, Sandra Warren, James Hall, Georg G.A. Böhm, Mark Arigo, Steven Luo, Hiroshi Mouri, Jessica Kurasch, Noriko Mori
  • Polymers functionized with hydrobenzamides
    Patent number: 7671138
    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 hydrobenzamide compound.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: March 2, 2010
    Assignee: Bridgestone Corporation
    Inventor: Steven Luo
  • BULK POLYMERIZATION PROCESS FOR PRODUCING POLYDIENES
    Publication number: 20100004413
    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: Application
    Filed: December 30, 2008
    Publication date: January 7, 2010
    Inventors: Steven LUO, Kevin McCauley, Jason T. Poulton