Patents by Inventor James J. Kuhel, III

James J. Kuhel, III 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).

  • POLYMERIZATION CATALYST COMPOSITION AND METHOD OF EMPLOYING SAME
    Publication number: 20230192910
    Abstract: Without significantly impacting monomer conversion, the cis-1,4 mer content of conjugated diene mer in polymers can be increased by adding one or more Lewis bases to a catalyst composition that includes a Group 3 metal atom-containing carboxylate. This effect can be seen even at above average monomer concentrations.
    Type: Application
    Filed: February 20, 2023
    Publication date: June 22, 2023
    Inventors: Steven M. Baldwin, James J. Kuhel, III
  • Polymerization catalyst composition and method of employing same
    Patent number: 11584808
    Abstract: Without significantly impacting monomer conversion, the cis-1,4 mer content of conjugated diene mer in polymers can be increased by adding one or more Lewis bases to a catalyst composition that includes a Group 3 metal atom-containing carboxylate. This effect can be seen even at above average monomer concentrations.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: February 21, 2023
    Assignees: Bridgestone Corporation, Bridgestone Americas Tire Operations, LLC
    Inventors: Steven M. Baldwin, James J. Kuhel, III
  • Method For Producing Polydienes With Reduced Cold Flow
    Publication number: 20220106421
    Abstract: A process for preparing a polydiene having increased viscosity and reduced cold flow that includes polymerizing a conjugated diene monomer in the presence of a lanthanide-containing compound to form an intermediate polymer, and then adding a non-organometallic trimellitate ester compound as a coupling agent to raise the viscosity of the intermediate polymer. The coupling agent is added to the intermediate polymer mixture in an amount of about 0.01 to about 0.15 parts per hundred monomer (phm) of the starting monomer amount.
    Type: Application
    Filed: January 28, 2020
    Publication date: April 7, 2022
    Applicant: Bridgestone Americas Tire Operations, LLC
    Inventors: James J. Kuhel, III, David M. Roggeman
  • Polymerization Catalyst Composition And Method Of Employing Same
    Publication number: 20210198390
    Abstract: Without significantly impacting monomer conversion, the cis-1,4 mer content of conjugated diene mer in polymers can be increased by adding one or more Lewis bases to a catalyst composition that includes a Group 3 metal atom-containing carboxylate. This effect can be seen even at above average monomer concentrations.
    Type: Application
    Filed: December 30, 2020
    Publication date: July 1, 2021
    Applicants: Bridgestone Corporation, Bridgestone Americas Tire Operations, LLC
    Inventors: Steven M. Baldwin, James J. Kuhel, III