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 protected hydrazone compounds containing an acyl group
    Patent number: 9115231
    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: Grant
    Filed: July 26, 2013
    Date of Patent: August 25, 2015
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Joshua S. Dickstein
  • Polymers functionalized with heterocyclic nitrile compounds
    Patent number: 9085646
    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: Grant
    Filed: November 6, 2012
    Date of Patent: July 21, 2015
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Ryouji Tanaka, Kouichirou Tani
  • RUBBER ARTICLES SUBJECTED TO REPEATED DEFORMATION AND COMPOSITIONS FOR MAKING THE SAME
    Publication number: 20150167771
    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: February 27, 2015
    Publication date: June 18, 2015
    Inventors: Sheel AGARWAL, Steven LUO, John RENSEL
  • POLYMERS FUNCTIONALIZED WITH NITRILE COMPOUNDS CONTAINING A PROTECTED AMINO GROUP
    Publication number: 20150148489
    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 nitrile compound containing a protected amino group, where the protected amino group is directly attached to a moiety selected from the group consisting of acyclic moieties, heterocyclic moieties, and non-aromatic cyclic moieties.
    Type: Application
    Filed: January 28, 2015
    Publication date: May 28, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Steven LUO, Eiju SUZUKI, Dennis R. BRUMBAUGH
  • Polymers functionalized with lactones or thiolactones containing a protected amino group
    Patent number: 8993683
    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 lactone or thiolactone that contains a protected amino group.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: March 31, 2015
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Zengquan Qin
  • Bulk polymerization of conjugated dienes using a nickel-based catalyst system
    Patent number: 8987395
    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: Grant
    Filed: December 30, 2011
    Date of Patent: March 24, 2015
    Assignee: Bridgestone Corporation
    Inventors: Kevin M. McCauley, Steven Luo
  • Process for producing functionalized polymers
    Patent number: 8981020
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of (a) polymerizing monomer in the presence of a coordination catalyst to form a polymer, (b) inhibiting said step of polymerizing with a Lewis base, and (c) reacting the polymer with a functionalizing agent.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: March 17, 2015
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Kevin M. McCauley, Timothy L. Tartamella, Mark W. Smale, Randhir Shetty
  • Polymers functionalized with polyhydrazone compounds
    Patent number: 8962766
    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: Grant
    Filed: September 17, 2012
    Date of Patent: February 24, 2015
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Joshua S. Dickstein, Dennis R. Brumbaugh
  • Method for producing polydienes and polydiene copolymers with reduced cold flow
    Patent number: 8952090
    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: Grant
    Filed: June 10, 2013
    Date of Patent: February 10, 2015
    Assignee: Bridgestone Corporation
    Inventor: Steven Luo
  • Process For Producing Polydienes
    Publication number: 20150031845
    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 organosulfide; and (ii) polymerizing conjugated diene monomer in the presence of the active catalyst and an organosulfide.
    Type: Application
    Filed: March 12, 2013
    Publication date: January 29, 2015
    Applicant: Bridgestone Corporation
    Inventors: Kevin M. McCauley, Zengquan Qin, Steven Luo
  • Polymers Functionalized With Lactones Or Thiolactones Containing A Protected Amino Group
    Publication number: 20150018488
    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 lactone or thiolactone that contains a protected amino group.
    Type: Application
    Filed: August 31, 2012
    Publication date: January 15, 2015
    Applicant: Bridgestone Corporation
    Inventors: Steven Luo, Zengquan Qin
  • Branched polymers and methods for their synthesis and use
    Patent number: 8933181
    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: Grant
    Filed: January 6, 2012
    Date of Patent: January 13, 2015
    Assignee: Bridgestone Corporation
    Inventors: Hiroshi Mouri, Steven Luo, Jessica Kurasch, Christopher G. Robertson, Sandra Warren
  • Functionalized Polymer
    Publication number: 20150011710
    Abstract: A method for providing a polymer having terminal functionality involves reacting a terminally active polymer with an ?,?-ethylenically unsaturated compound that includes a group 2-13 element so as to provide a functionalized polymer. The resulting polymer exhibits enhanced interactivity with particulate fillers and can be used in the manufacture of vulcanizates.
    Type: Application
    Filed: December 20, 2012
    Publication date: January 8, 2015
    Applicant: Bridgestone Corporation
    Inventors: Zengquan Qin, Terrence E. Hogan, Toshihiro Uchiyama, Joshua P. Abell, Steven Luo
  • Bulk Polymerization Process For Producing Polydienes
    Publication number: 20140378630
    Abstract: A process for preparing a polydiene, the process comprising the steps of: polymerizing conjugated diene monomer with a metallocene complex catalyst system within a polymerization mixture that includes less than 20% by weight of solvent based on the total weight of the polymerization mixture, where the metallocene complex catalyst system includes the combination or reaction product of: (a) metallocene complex, (b) an alkylating agent, and optionally (c) a non-coordinating anion.
    Type: Application
    Filed: December 27, 2012
    Publication date: December 25, 2014
    Applicant: Bridgestone Corporation
    Inventors: Kevin M. McCauley, Zengquan Qin, Joshua S. Dickstein, Steven Luo
  • Functionalized polymers and methods for their manufacture
    Patent number: 8895670
    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: Grant
    Filed: September 30, 2010
    Date of Patent: November 25, 2014
    Assignee: Bridgestone Corporation
    Inventor: Steven Luo
  • Process For Producing Polydienes
    Publication number: 20140303327
    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 a sulfone, a sulfoxide, and a phosphine oxide; and (ii) polymerizing conjugated diene monomer in the presence of the active catalyst and a polymerization modulator selected from the group consisting of a sulfone, a sulfoxide, and a phosphine oxide.
    Type: Application
    Filed: November 19, 2012
    Publication date: October 9, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Kevin M. McCauley, Steven Luo
  • Functionalized polymer and method for making
    Patent number: 8853352
    Abstract: A functionalized polymer includes a directly bonded moiety, which can be located at a terminus of the polymer, defined by the formula —CR1R2NH-Q-M where M is (N?CR1R2) or N-(QN?CR1R2)2 each Q independently is a substituted or unsubstituted, cyclic or acyclic C1-C40 alkyl, aryl, or alkaryl radical, and each R1 and R2 independently is a hydrogen atom or a substituted or unsubstituted alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl, allyl, aralkyl, alkaryl, or alkynyl group. The polymer can be provided by introducing a polyimine compound into a system that includes carbanionic (living) polymer. Such polymers can be used in the production of compositions that include particulate fillers.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: October 7, 2014
    Assignee: Bridgestone Corporation
    Inventors: Yuan-Yong Yan, Steven Luo
  • Method For Producing Polydienes And Polydiene Copolymers With Reduced Cold Flow
    Publication number: 20140296445
    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 glycidic ester.
    Type: Application
    Filed: November 19, 2012
    Publication date: October 2, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Steven Luo
  • POLYMERS FUNCTIONALIZED WITH POLYCYANO COMPOUNDS
    Publication number: 20140275403
    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: June 3, 2014
    Publication date: September 18, 2014
    Inventor: Steven LUO
  • Polymers functionalized with halosilanes containing an amino group
    Patent number: 8809464
    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: Grant
    Filed: August 17, 2012
    Date of Patent: August 19, 2014
    Assignee: Bridgestone Corporation
    Inventors: Terrence E. Hogan, Steven Luo, Yoichi Ozawa, Junko Matsushita, Ryuji Nakagawa, Eiju Suzuki, Ken Tanaka