Patents by Inventor Rita E. Cook

Rita E. Cook 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).

  • Patent number: 12319795
    Abstract: A vulcanizate prepared by a method comprising introducing an elastomer, a filler, and a polar polysulfide crosslinking agent to form a masterbatch and introducing a curative to the masterbatch to form a vulcanizable composition. Vulcanizing the composition to graft the polar group from the crosslinking agent onto an elastomer to increase the hydrophilicity of the composition.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: June 3, 2025
    Assignee: Bridgestone Corporation
    Inventors: Erin Sheepwash, Rita E. Cook
  • Patent number: 12006422
    Abstract: Disclosed herein are coupled polymer products comprising polymer with up to five polymer chains bonded to a functionalizing compound of either formula (II) or formula (III), wherein the polymer chains are comprised of conjugated diene-containing monomers optionally in combination with vinyl aromatic monomers and further include vinyl group-functionalized aminosilane compound of formula (I) bonded within the polymer chain. Also disclosed are processes for producing the coupled polymer products as well as a rubber composition containing the coupled polymer product and tire components comprising the rubber composition.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: June 11, 2024
    Assignee: Bridgestone Corporation
    Inventors: Yuan-Yong Yan, Rita E. Cook, Christine M. Rademacher
  • Patent number: 11807704
    Abstract: Disclosed herein are a functionalized diene monomer-containing polymer containing first and second functionalizing groups, processes for preparing the functionalized polymer, and rubber compositions containing the functionalized polymer. The functionalized polymer contains polymer chains comprises of at least one conjugated diene monomer optionally in combination with at least one vinyl aromatic monomer wherein each polymer chain is functionalized at its chain end with at least the first functionalizing group and is coupled via the first functionalizing group to the second functionalizing group.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: November 7, 2023
    Assignee: Bridgestone Corporation
    Inventors: Yuan-Yong Yan, Zengquan Qin, Koichi Saito, Rita E. Cook
  • Publication number: 20230030838
    Abstract: A vulcanizate prepared by a method comprising introducing an elastomer, a filler, and a polar polysulfide crosslinking agent to form a masterbatch and introducing a curative to the masterbatch to form a vulcanizable composition. Vulcanizing the composition to graft the polar group from the crosslinking agent onto an elastomer to increase the hydrophilicity of the composition.
    Type: Application
    Filed: December 30, 2020
    Publication date: February 2, 2023
    Inventors: Erin Sheepwash, Rita E. Cook
  • Patent number: 11203658
    Abstract: Disclosed herein is a coupled polymer product comprising polymer with up to four polymer chains bonded to a functionalizing compound of formula II, wherein the polymer chains are comprised of conjugated diene-containing monomers optionally in combination with vinyl aromatic monomers and further include vinyl group-functionalized silane compound of formula I bonded within the polymer chain. Also disclosed are processes for producing the coupled polymer product as well as a rubber composition containing the coupled polymer product and tire components comprising the rubber composition.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: December 21, 2021
    Assignee: Bridgestone Corporation
    Inventors: Yuan-Yong Yan, Rita E. Cook
  • Publication number: 20210171676
    Abstract: Disclosed herein are a functionalized diene monomer-containing polymer containing first and second functionalizing groups, processes for preparing the functionalized polymer, and rubber compositions containing the functionalized polymer. The functionalized polymer contains polymer chains comprises of at least one conjugated diene monomer optionally in combination with at least one vinyl aromatic monomer wherein each polymer chain is functionalized at its chain end with at least the first functionalizing group and is coupled via the first functionalizing group to the second functionalizing group.
    Type: Application
    Filed: December 13, 2018
    Publication date: June 10, 2021
    Applicant: Bridgestone Corporation
    Inventors: Yuan-Yong Yan, Zengquan Qin, Koichi Saito, Rita E. Cook
  • Publication number: 20210163720
    Abstract: Disclosed herein are coupled polymer products comprising polymer with up to five polymer chains bonded to a functionalizing compound of either formula (II) or formula (III), wherein the polymer chains are comprised of conjugated diene-containing monomers optionally in combination with vinyl aromatic monomers and further include vinyl group-functionalized aminosilane compound of formula (I) bonded within the polymer chain. Also disclosed are processes for producing the coupled polymer products as well as a rubber composition containing the coupled polymer product and tire components comprising the rubber composition.
    Type: Application
    Filed: December 13, 2018
    Publication date: June 3, 2021
    Applicant: Bridgestone Corporation
    Inventors: Yuan-Yong Yan, Rita E. Cook, Christine M. Rademacher
  • Publication number: 20200031979
    Abstract: Disclosed herein is a coupled polymer product comprising polymer with up to four polymer chains bonded to a functionalizing compound of formula II, wherein the polymer chains are comprised of conjugated diene-containing monomers optionally in combination with vinyl aromatic monomers and further include vinyl group-functionalized silane compound of formula I bonded within the polymer chain. Also disclosed are processes for producing the coupled polymer product as well as a rubber composition containing the coupled polymer product and tire components comprising the rubber composition.
    Type: Application
    Filed: March 8, 2018
    Publication date: January 30, 2020
    Applicant: Bridgestone Corporation
    Inventors: Yuan-Yong Yan, Rita E. Cook