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).

  • Polymers functionalized with oxime compounds containing an acyl group
    Patent number: 8748531
    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: Grant
    Filed: December 10, 2010
    Date of Patent: June 10, 2014
    Assignee: Bridgestone Corporation
    Inventor: Steven Luo
  • Polymers functionalized with nitrile compounds containing a protected amino group
    Patent number: 8735494
    Abstract: A method for preparing a polydiene polymer, the method comprising: (i) preparing an active polymerization mixture by introducing conjugated diene monomer, and optionally monomer copolymerizable therewith, and a lanthanide-based catalyst system; (ii) adding a nitrile compound containing a protected amino group to the active polymerization mixture; and (iii) adding a co-functionalizing agent to the active polymerization mixture.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: May 27, 2014
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Eiju Suzuki, Dennis R. Brumbaugh
  • POLYMERS FUNCTIONALIZED WITH NITROSO COMPOUNDS
    Publication number: 20140100340
    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 10, 2013
    Publication date: April 10, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Steven LUO
  • Lanthanide Complex Catalyst And Polymerization Method Employing Same
    Publication number: 20140039126
    Abstract: A novel class of lanthanide metal salen complexes can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers.
    Type: Application
    Filed: February 5, 2012
    Publication date: February 6, 2014
    Applicant: Bridgestone Corporation
    Inventors: Zengquan Qin, Steven Luo, Joshua S. Dickstein
  • Polymers Functionalized With Protected Hydrazone Compounds Containing An Acyl Group
    Publication number: 20140031488
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer to form a reactive polymer; and (ii) reacting the reactive polymer with a protected hydrazone compound containing an acyl group.
    Type: Application
    Filed: July 26, 2013
    Publication date: January 30, 2014
    Applicant: Bridgestone Corporation
    Inventors: Steven Luo, Joshua S. Dickstein
  • Metal Complex Catalysts And Polymerization Methods Employing Same
    Publication number: 20140031502
    Abstract: A novel class of aminidate complexes can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers.
    Type: Application
    Filed: February 5, 2012
    Publication date: January 30, 2014
    Applicant: Bridgestone Corporation
    Inventors: Zengquan Qin, Steven Luo
  • Lanthanide Complex Catalyst And Polymerization Method Employing Same
    Publication number: 20140031503
    Abstract: A novel class of lanthanide metal phenoxyimine complexes can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers.
    Type: Application
    Filed: February 5, 2012
    Publication date: January 30, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Zengquan Qin, Steven Luo, Joshua S. Dickstein
  • Polymers Functionalized With A Carboxylic Or Thiocarboxylic Ester Containing A Silylated Amino Group
    Publication number: 20140018500
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer with an anionic initiator to form a reactive polymer; and (ii) reacting the reactive polymer with a carboxylic or thiocarboxylic ester containing a silylated amino group, where the silylated amino group is directly attached to a moiety selected from the group consisting of acyclic moieties, heterocyclic moieties, and nonaromatic cyclic moieties.
    Type: Application
    Filed: March 29, 2012
    Publication date: January 16, 2014
    Applicant: Bridgestone Corporation
    Inventor: Steven Luo
  • PROCESS FOR PRODUCING POLYDIENES
    Publication number: 20140011963
    Abstract: A method for producing a polydiene, the method comprising the steps of: (i) forming an active catalyst by combining a lanthanide-containing compound, an alkylating agent, and a halogen source in the substantial absence of an amine; and (ii) polymerizing conjugated diene monomer in the presence of the active catalyst and an amine.
    Type: Application
    Filed: September 15, 2011
    Publication date: January 9, 2014
    Applicant: Bridgestone Corporation
    Inventors: Kevin M. McCauley, Steven Luo
  • Process for producing polydienes
    Patent number: 8623975
    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, 2010
    Date of Patent: January 7, 2014
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Kevin M. McCauley, Jason T. Poulton
  • Polymers functionalized with nitroso compounds
    Patent number: 8623967
    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: May 14, 2012
    Date of Patent: January 7, 2014
    Assignee: Bridgestone Corporation
    Inventor: Steven Luo
  • METHOD FOR PRODUCING POLYDIENES AND POLYDIENE COPOLYMERS WITH REDUCED COLD FLOW
    Publication number: 20130331507
    Abstract: A method for preparing a coupled polymer, the method comprising the steps of: (i) polymerizing monomers to form a reactive polymer, and (ii) reacting the reactive polymer with a boronic ester containing a cyano group.
    Type: Application
    Filed: June 10, 2013
    Publication date: December 12, 2013
    Inventor: Steven LUO
  • POLYMERS FUNCTIONALIZED WITH UNSATURATED HETEROCYCLES CONTAINING A PROTECTED AMINO GROUP
    Publication number: 20130331508
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomers to form a reactive polymer, and (ii) reacting the reactive polymer with an unsaturated heterocycle containing a protected amino group.
    Type: Application
    Filed: June 10, 2013
    Publication date: December 12, 2013
    Inventor: Steven LUO
  • Rubber composition having improved crack resistance
    Patent number: 8592509
    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: Grant
    Filed: December 30, 2010
    Date of Patent: November 26, 2013
    Assignee: Bridgestone Corporation
    Inventors: Zhong-Ren Chen, Steven Luo
  • Bulk Polymerization Of Conjugated Dienes Using A Nickel-Based Catalyst System
    Publication number: 20130281642
    Abstract: A process for preparing a polydiene, the process comprising the step of polymerizing conjugated diene monomer with a nickel-based catalyst system, 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, where the temperature of the polymerization mixture is maintained below 34° C. during said step of polymerizing, and where the conversion of the conjugated diene monomer is maintained below 30%.
    Type: Application
    Filed: December 30, 2011
    Publication date: October 24, 2013
    Applicant: Bridgestone Corporation
    Inventors: Kevin M. McCauley, Steven Luo
  • Bulk Polymerization of Conjugated Dienes Using a Nickel-Based Catalyst System
    Publication number: 20130274430
    Abstract: A process for preparing a polydiene, the process comprising the steps of (i) providing conjugated diene monomer; (ii) charging a nickel-based catalyst system to the conjugated diene monomer; and (iii) charging a modulating Lewis base to the conjugated diene monomer, to thereby polymerize the conjugated diene monomer in the presence of the modulating Lewis base, where said step of charging a modulating Lewis base is separate from said step of charging a nickel-based catalyst, and where said steps of providing conjugated diene monomer, charging a nickel-based catalyst system and charging a Lewis base form a polymerization mixture that includes less than 20% by weight of organic solvent based on the total weight of the polymerization mixture.
    Type: Application
    Filed: December 30, 2011
    Publication date: October 17, 2013
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Kevin M. McCauley, Steven Luo
  • Polymers functionalized with protected oxime compounds
    Patent number: 8541509
    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 2, 2011
    Date of Patent: September 24, 2013
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Yuan-Yong Yan, Jason T. Poulton, Eiju Suzuki
  • Polymers functionalized with imide compounds containing a protected amino group
    Patent number: 8426609
    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: February 22, 2011
    Date of Patent: April 23, 2013
    Assignee: Bridgestone Corporation
    Inventor: Steven Luo
  • POLYMERS FUNCTIONALIZED WITH NITROSO COMPOUNDS
    Publication number: 20130096264
    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: May 14, 2012
    Publication date: April 18, 2013
    Inventor: Steven Luo
  • POLYMERS FUNCTIONALIZED WITH POLYHYDRAZONE COMPOUNDS
    Publication number: 20130079463
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomers to form a reactive polymer, and (ii) reacting the reactive polymer with a protected polyhydrazone compound.
    Type: Application
    Filed: September 17, 2012
    Publication date: March 28, 2013
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Steven Luo, Joshua S. Dickstein, Dennis R. Brumbaugh