Patents by Inventor David F. Lawson

David F. Lawson 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).

  • Processes for preparing aminosilane functionalized polymers
    Patent number: 11104748
    Abstract: Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: August 31, 2021
    Assignee: Bridgestone Corporation
    Inventors: David F. Lawson, Terrence E. Hogan, Christine M. Rademacher, David M. Roggeman, Fuminori Ota
  • Aminosilane initiators and functionalized polymers prepared therefrom
    Patent number: 10745497
    Abstract: Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: August 18, 2020
    Assignee: Bridgestone Corporation
    Inventors: David F. Lawson, Terrence E. Hogan, Christine M. Rademacher, David M. Roggeman, Fuminori Ota
  • Processes For Preparing Aminosilane Functionalized Polymers
    Publication number: 20190338052
    Abstract: Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer.
    Type: Application
    Filed: July 15, 2019
    Publication date: November 7, 2019
    Applicant: Bridgestone Corporation
    Inventors: David F. Lawson, Terrence E. Hogan, Christine M. Rademacher, David M. Roggeman, Fuminori Ota
  • Processes for preparing aminosilane functionalized polymers
    Patent number: 10351636
    Abstract: Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: July 16, 2019
    Assignee: Bridgestone Corporation
    Inventors: David F. Lawson, Terrence E. Hogan, Christine Rademacher, David M. Roggeman, Fuminori Ota
  • Aminosilane Initiators And Functionalized Polymers Prepared Therefrom
    Publication number: 20180155460
    Abstract: Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer.
    Type: Application
    Filed: February 5, 2018
    Publication date: June 7, 2018
    Applicant: Bridgestone Corporation
    Inventors: David F. Lawson, Terrence E. Hogan, Christine M. Rademacher, David M. Roggeman, Fuminori Ota
  • Aminosilane initiators and functionalized polymers prepared therefrom
    Patent number: 9884923
    Abstract: Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: February 6, 2018
    Assignee: Bridgestone Corporation
    Inventors: David F. Lawson, Terrence E. Hogan, Christine Rademacher, David M. Roggeman, Fuminori Ota
  • PROCESSES FOR PREPARING AMINOSILANE FUNCTIONALIZED POLYMERS
    Publication number: 20170283516
    Abstract: Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer.
    Type: Application
    Filed: June 12, 2017
    Publication date: October 5, 2017
    Applicant: Bridgestone Corporation
    Inventors: David F. Lawson, Terrence E. Hogan, Christine Rademacher, David M. Roggeman, Fuminori Ota
  • Processes for preparing aminosilane functionalized polymers
    Patent number: 9676874
    Abstract: Disclosed herein are metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer. A telechelic polymer may result from use of the metallated aminosilane compound and a functional terminator.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: June 13, 2017
    Assignee: Bridgestone Corporation
    Inventors: David F. Lawson, Terrence E. Hogan, Christine Rademacher, David M. Roggeman, Fuminori Ota
  • PROCESSES FOR PREPARING AMINOSILANE FUNCTIONALIZED POLYMERS
    Publication number: 20160152756
    Abstract: Disclosed herein are metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer. A telechelic polymer may result from use of the metallated aminosilane compound and a functional terminator.
    Type: Application
    Filed: February 3, 2016
    Publication date: June 2, 2016
    Applicant: Bridgestone Corporation
    Inventors: David F. Lawson, Terrence E. Hogan, Christine Rademacher, David M. Roggeman, Fuminori Ota
  • Aminosilane initiators, functionalized polymers prepared therefrom and related processes
    Patent number: 9255158
    Abstract: Disclosed herein are metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer. A telechelic polymer may result from use of the metallated aminosilane compound and a functional terminator.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: February 9, 2016
    Assignee: Bridgestone Corporation
    Inventors: David F. Lawson, Terrence E. Hogan, Christine Rademacher, David M. Roggeman, Fuminori Ota
  • AMINOSILANE INITIATORS, FUNCTIONALIZED POLYMERS PREPARED THEREFROM AND RELATED PROCESSES
    Publication number: 20150099852
    Abstract: Disclosed herein are metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer. A telechelic polymer may result from use of the metallated aminosilane compound and a functional terminator.
    Type: Application
    Filed: December 15, 2014
    Publication date: April 9, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: David F. Lawson, Terrence E. Hogan, Christine Rademacher, David M. Roggeman, Fuminori Ota
  • Aminosilane initiators and functionalized polymers prepared therefrom
    Patent number: 8916665
    Abstract: Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer. A telechelic polymer may result from use of the metallated aminosilane compound as a functional terminator.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: December 23, 2014
    Assignee: Bridgestone Corporation
    Inventors: David F. Lawson, Terrence E. Hogan, Christine Rademacher, David M. Roggeman, Fuminori Ota
  • Hysteresis elastomeric compositions comprising polymers terminated with isocyanato alkoxysilanes
    Patent number: 8642704
    Abstract: A functionalized polymer terminated by using an isocyanato alkoxysilane terminating agent. A method of preparing a functionalized polymer comprising the step of contacting a living polymer with an isocyanato alkoxysilane terminating agent.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: February 4, 2014
    Assignee: Bridgestone Corporation
    Inventors: Christine Rademacher, David F. Lawson, Terrence E. Hogan
  • Aminosilane Initiators And Functionalized Polymers Prepared Therefrom
    Publication number: 20130281645
    Abstract: Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer. A telechelic polymer may result from use of the metallated aminosilane compound as a functional terminator.
    Type: Application
    Filed: June 22, 2011
    Publication date: October 24, 2013
    Applicant: Bridgestone Corporation
    Inventors: David F. Lawson, Terrence E. Hogan, Christine Rademacher, David M. Roggeman, Fuminori Ota
  • AMINOSILANE INITIATORS AND FUNCTIONALIZED POLYMERS PREPARED THEREFROM
    Publication number: 20130066008
    Abstract: Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer.
    Type: Application
    Filed: December 30, 2010
    Publication date: March 14, 2013
    Inventors: David F. Lawson, Terrence E. Hogan, Christine Rademacher, David M. Roggeman, Fuminori Ota
  • Functionalized polymers and improved vulcanizates therefrom
    Patent number: 8207275
    Abstract: A functionalized polymer defined by the formula ?-R1-?, where ? is a polymer chain, R1 is a bond or a divalent organic group, and ? is a sulfur-containing heterocycle.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: June 26, 2012
    Assignee: Bridgestone Corporation
    Inventors: Terrence E. Hogan, Christine Rademacher, William Hergenrother, David F. Lawson
  • Functionalized polymer with linking group
    Patent number: 8063153
    Abstract: A functionalized polymer includes an elastomer, a terminal functional group including at least one heteroatom, and a unit intermediate the elastomer and the functional group; the intermediate unit includes a terminal moiety which, in its anionic form, is less basic than a secondary amino radical ion. Methods of making the functionalized polymer and of using it with particulate filler to make, e.g., a tire tread composition also are disclosed.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: November 22, 2011
    Assignee: Bridgestone Corporation
    Inventors: Yuan-Yong Yan, David F. Lawson
  • Method of improving carbon black dispersion in rubber compositions
    Patent number: 7964656
    Abstract: A method for forming a vulcanizable composition of matter, the method comprising providing a polymer cement or latex comprising at least one rubber, adding at least one processing aid to the cement or latex to form a modified rubber cement or latex, isolating the rubber and at least one processing aid to form a premix, and mixing the premix with carbon black.
    Type: Grant
    Filed: February 1, 2007
    Date of Patent: June 21, 2011
    Assignee: Bridgestone Corporation
    Inventors: Georg G. A. Böhm, Anthony J. Ramic, James D. Ulmer, William L. Hergenrother, Christine M. Rademacher, David F. Lawson, Sunil B. Sarkar
  • Functionalized polymers and improved tires therefrom
    Patent number: 7879945
    Abstract: A method of forming a functionalized polymer, the method comprising reacting a living polymer with a compound defined by the formula where R5 includes a monovalent organic group, R6 independently includes a monovalent organic group, each R7 independently includes hydrogen or a monovalent organic group, each R8 independently includes hydrogen or monovalent organic group, R9 includes a monovalent organic group, M is silicon or tin, and x includes an integer from about 2 to about 10, where R5 and R6 may optionally each independently be alkoxy groups, and where R7, R8, and R9 are non-Zerewitinoff organic groups.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: February 1, 2011
    Assignee: Bridgestone Corporation
    Inventors: Terrence E. Hogan, Christine Rademacher, David F. Lawson, H. James Harwood
  • FUNCTIONALIZED POLYMERS AND IMPROVED VULCANIZATES THEREFROM
    Publication number: 20100298465
    Abstract: A functionalized polymer defined by the formula ?-R1-?, where ? is a polymer chain, R1 is a bond or a divalent organic group, and ? is a sulfur-containing heterocycle.
    Type: Application
    Filed: May 24, 2010
    Publication date: November 25, 2010
    Inventors: Terrence E. Hogan, Christine Rademacher, William Hergenrother, David F. Lawson