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).

  • Functionalized polymers and improved tires therefrom
    Patent number: 8399570
    Abstract: A tire component comprising a vulcanized residue of a functionalized polymer defined by the formula I where ? is a rubbery polymer chain, B is a boron atom, R1 is a bond or a divalent organic group, and each ? is independently selected from thioalkoxy groups (—SR), amino groups (—NR2), or phosphino groups (—PR2), where each R is independently selected from monovalent organic groups or two R groups form a divalent organic group, which forms a cyclic structure.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: March 19, 2013
    Assignee: Bridgestone Corporation
    Inventors: Christine Rademacher, Steven Luo, Terrence E. Hogan
  • Functionalized polymer
    Patent number: 8389644
    Abstract: A functionalized polymer includes a directly bonded moiety, which can be located at a terminus of the polymer, defined by the formula —NH—NR1R2 where R1 and R2 independently are substituted or unsubstituted alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl, allyl, aralkyl, alkaryl, or alkynyl groups, or together form a substituted or unsubstituted alkylene, alkenylene, cycloalkylene, cycloalkenylene, or arylene group. The functionalized polymer can be provided by reacting a living polymer with a hydrazone. Such polymers can be used in the production of compositions that include particulate fillers.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: March 5, 2013
    Assignee: Bridgestone Corp.
    Inventors: Dennis R. Brumbaugh, Steven Luo, Christine Rademacher, Yuan-Yong Yan
  • Polymers functionalized with heterocyclic nitrile compounds
    Patent number: 8362156
    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: October 14, 2008
    Date of Patent: January 29, 2013
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Ryouji Tanaka, Kouichirou Tani
  • Polymers functionalized with nitrile compounds containing a protected amino group
    Patent number: 8344066
    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: Grant
    Filed: January 22, 2010
    Date of Patent: January 1, 2013
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Eiju Suzuki, Dennis R. Brumbaugh
  • Polymers functionalized with polyoxime compounds and methods for their manufacture
    Patent number: 8338544
    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: Grant
    Filed: December 21, 2009
    Date of Patent: December 25, 2012
    Assignee: Bridgestone Corporation
    Inventor: Steven Luo
  • POLYMERS FUNCTIONALIZED WITH HALOSILANES CONTAINING AN AMINO GROUP
    Publication number: 20120309906
    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: August 17, 2012
    Publication date: December 6, 2012
    Inventors: Terrence E. Hogan, Steven Luo, Yoichi Ozawa, Matsushita Junko, Nakagawa Ryuji, Suzuki Eiju, Ken Tanaka
  • Process for producing functionalized polymers
    Patent number: 8324329
    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: August 7, 2007
    Date of Patent: December 4, 2012
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Kevin M. McCauley, Timothy L. Tartamella, Mark W. Smale, Randhir Shetty
  • POLYMERS FUNCTIONALIZED WITH NITRILE COMPOUNDS CONTAINING A PROTECTED AMINO GROUP
    Publication number: 20120296041
    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 24, 2011
    Publication date: November 22, 2012
    Inventor: Steven Luo
  • Polymers functionalized with heterocyclic nitrile compounds
    Patent number: 8314189
    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: June 23, 2008
    Date of Patent: November 20, 2012
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Ryouji Tanaka, Kouichirou Tani
  • Process for Producing Blends of Syndiotactic, 1,2-Polybutadiene and Rubbery Elastomers
    Publication number: 20120252979
    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: Application
    Filed: November 28, 2011
    Publication date: October 4, 2012
    Inventors: Christine Rademacher, Steven Luo, Zhong-Ren Chen, Walter Tomaszewski, Edward Kelley
  • Polymers functionalized with polyimine compounds
    Patent number: 8268933
    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 polyimine compound.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: September 18, 2012
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Yuan-Young Yan
  • Polymers functionalized with halosilanes containing an amino group
    Patent number: 8258332
    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: June 18, 2008
    Date of Patent: September 4, 2012
    Assignee: Bridgestone Corporation
    Inventors: Terrence E. Hogan, Steven Luo, Yoichi Ozawa, Junko Matsushita, Ryuji Nakagawa, Eiju Suzuki, Ken Tanaka
  • Functionalized polymer and methods for making and using
    Patent number: 8236892
    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: Grant
    Filed: December 26, 2008
    Date of Patent: August 7, 2012
    Inventors: Steven Luo, Yoichi Ozawa, Jason Poulton, Dennis R Brumbaugh, Michael W. Hayes
  • FUNCTIONALIZED POLYMERS AND METHODS FOR THEIR MANUFACTURE
    Publication number: 20120184677
    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, 2010
    Publication date: July 19, 2012
    Inventor: Steven Luo
  • Process For Producing Polydienes
    Publication number: 20120172553
    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: Application
    Filed: June 24, 2010
    Publication date: July 5, 2012
    Inventors: Steven Luo, Kevin M. McCauley, Jason T. Poulton
  • 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
  • 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
  • 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
  • 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