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).

  • Publication number: 20240076486
    Abstract: Disclosed is an impact modified resin comprises a matrix polymer resin and an impact modifier. The impact modifier comprises particles of a crosslinked polyolefin elastomer having one or more (meth)acrylic monomers grafted to the crosslinked polyolefin elastomer particles. The matrix polymer resin is a styrenic polymer.
    Type: Application
    Filed: October 14, 2020
    Publication date: March 7, 2024
    Inventors: Carlos Alfonso Cruz, Liang Chen, Steven C. Brown, Pu Luo
  • Patent number: 11884767
    Abstract: A vulcanizable composition comprising rubber component, a filler, and a curing agent, where the rubber component includes a block copolymer of polybutadiene and polyisoprene, and where the block copolymer has a cis content of at least 90%.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: January 30, 2024
    Assignee: Bridgestone Corporation
    Inventors: Hyeonjae Kim, Walter A. Salamant, Noriaki Yukimura, Steven Luo
  • Publication number: 20230183399
    Abstract: A method for preparing cis-1,4-polydienes, the method comprising the steps of preparing a preformed, active lanthanide-based catalyst, aging the active lanthanide-based catalyst for more than 5 days to thereby formed an aged catalyst, and introducing the aged catalyst and conjugated diene monomer to be polymerized to thereby form an active polymerization mixture in which the conjugated diene monomer is polymerized to form a polydiene having a reactive chain end.
    Type: Application
    Filed: February 13, 2023
    Publication date: June 15, 2023
    Inventors: Joshua S. DICKSTEIN, Steven LUO, Joshua ABELL, Laura S. KOCSIS, Kevin MCCAULEY
  • Publication number: 20220119573
    Abstract: A vulcanizable composition comprising rubber component, a filler, and a curing agent, where the rubber component includes a block copolymer of polybutadiene and polyisoprene, and where the block copolymer has a cis content of at least 90%.
    Type: Application
    Filed: December 29, 2021
    Publication date: April 21, 2022
    Inventors: Hyeonjae KIM, Walter A. SALAMANT, Noriaki YUKIMURA, Steven LUO
  • Patent number: 11230622
    Abstract: A vulcanizable composition comprising rubber component, a filler, and a curing agent, where the rubber component includes a block copolymer of polybutadiene and polyisoprene, and where the block copolymer has a cis content of at least 90%.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: January 25, 2022
    Assignee: Bridgestone Corporation
    Inventors: Hyeonjae Kim, Walter A. Salamant, Noriaki Yukimura, Steven Luo
  • Patent number: 11066486
    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 an imine compound containing a cyano group.
    Type: Grant
    Filed: January 25, 2020
    Date of Patent: July 20, 2021
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Joshua S. Dickstein
  • Patent number: 10899718
    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 an N-protected hydantoin compound.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: January 26, 2021
    Assignee: Bridgestone Corporation
    Inventor: Steven Luo
  • Publication number: 20200407473
    Abstract: A method for preparing cis-1,4-polydienes, the method comprising the steps of preparing a preformed, active lanthanide-based catalyst, aging the active lanthanide-based catalyst for more than 5 days to thereby formed an aged catalyst, and introducing the aged catalyst and conjugated diene monomer to be polymerized to thereby form an active polymerization mixture in which the conjugated diene monomer is polymerized to form a polydiene having a reactive chain end.
    Type: Application
    Filed: September 9, 2020
    Publication date: December 31, 2020
    Inventors: Joshua S. DICKSTEIN, Steven LUO, Joshua ABELL, Laura S. KOCSIS, Kevin MCCAULEY
  • Patent number: 10774162
    Abstract: A method for preparing cis-1,4-polydienes, the method comprising the steps of preparing a preformed, active lanthanide-based catalyst, aging the active lanthanide-based catalyst for more than 5 days to thereby formed an aged catalyst, and introducing the aged catalyst and conjugated diene monomer to be polymerized to thereby form an active polymerization mixture in which the conjugated diene monomer is polymerized to form a polydiene having a reactive chain end.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: September 15, 2020
    Assignee: Bridgestone Corporation
    Inventors: Joshua S. Dickstein, Steven Luo, Joshua Abell, Laura S. Kocsis, Kevin McCauley
  • Publication number: 20200157253
    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 an imine compound containing a cyano group.
    Type: Application
    Filed: January 25, 2020
    Publication date: May 21, 2020
    Inventors: Steven LUO, Joshua S. DICKSTEIN
  • Patent number: 10590208
    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 an imine compound containing a cyano group.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: March 17, 2020
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Joshua S. Dickstein
  • Patent number: 10550203
    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: July 18, 2018
    Date of Patent: February 4, 2020
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Ryouji Tanaka, Kouichirou Tani
  • Publication number: 20190359755
    Abstract: A vulcanizable composition comprising rubber component, a filler, and a curing agent, where the rubber component includes a block copolymer of polybutadiene and polyisoprene, and where the block copolymer has a cis content of at least 90%.
    Type: Application
    Filed: November 9, 2017
    Publication date: November 28, 2019
    Applicant: Bridgestone Corporation
    Inventors: Hyeonjae Kim, Walter A. Salamant, Noriaki Yukimura, Steven Luo
  • Patent number: 10364300
    Abstract: A method for preparing a coupled polymer, the method comprising the steps of polymerizing monomer to form a reactive polymer and reacting the reactive polymer with a carboxylic or thiocarboxylic ester containing a nitro group, where the carboxylic or thiocarboxylic ester containing a nitro group includes a single nitro group.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: July 30, 2019
    Assignee: Bridgestone Corporation
    Inventor: Steven Luo
  • Patent number: 10301397
    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: Grant
    Filed: August 1, 2016
    Date of Patent: May 28, 2019
    Assignee: Bridgestone Corporation
    Inventor: Steven Luo
  • Publication number: 20180319905
    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: July 18, 2018
    Publication date: November 8, 2018
    Inventors: Steven LUO, Ryouji TANAKA, Kouichirou TANI
  • Patent number: 10081688
    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: Grant
    Filed: September 19, 2016
    Date of Patent: September 25, 2018
    Assignee: Bridgestone Corporation
    Inventor: Steven Luo
  • Patent number: 10077323
    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 an imine compound containing a protected thiol group.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: September 18, 2018
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Joshua P. Abell
  • Patent number: 10035908
    Abstract: A process for preparing a blend of trans-1,4-polybutadiene and syndiotactic 1,2-polybutadiene, the process comprising the steps of (i) polymerizing 1,3-butadiene in the presence of a lanthanide-based catalyst to form a polymerization mixture including trans-1,4-polybutadiene, where the lanthanide-based catalyst includes (a) a lanthanide-containing compound, and (b) an organomagnesium compound; and (ii) polymerizing 1,3-butadiene in the presence of an iron-based catalyst within the polymerization mixture including trans-1,4-polybutadiene to form syndiotactic 1,2-polybutadiene within the polymerization mixture including trans-1,4-polybutadiene and thereby produce a blend of trans-1,4-polybutadiene and syndiotactic 1,2-polybutadiene; where the iron-based catalyst includes (a) an iron-containing compound, (b) an organomagnesium compound, and (c) a silyl phosphonate.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: July 31, 2018
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Sheel Agarwal, John D Rensel
  • Patent number: 10030083
    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 oxime compound containing a cyano group.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: July 24, 2018
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Joshua S. Dickstein