Patents by Inventor Charles Allen Williams

Charles Allen Williams 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).

  • APPARATUS FOR METHOD FOR POLYMER CHARACTERIZATION
    Publication number: 20110239746
    Abstract: Apparatus for GPC/TREF and TREF/GPC characterization of a polymer sample. The apparatus provides for the automated and integrated use of multiple TREF columns and a GPC system employing a multiple flow through detectors. In addition, a method for TREF/GPC characterization of a polymer sample by GPC analysis of TREF fractions at increasing TREF elution temperatures from multiple TREF columns operated in a coordinated and synchronized temperature cycle for increased sample throughput. Also, a method for GPC/TREF characterization of a polymer sample by GPC fractionation followed by TREF fractionation of the GPC fractionations.
    Type: Application
    Filed: June 15, 2011
    Publication date: October 6, 2011
    Applicant: Dow Global Technologies LLC
    Inventors: David T. Gillespie, Colin Li Pi Shan, Lonnie G. Hazlitt, Alexander W. Degroot, Peter B. Arnoudse, Charles Allen Williams
  • Apparatus and method for polymer characterization
    Patent number: 7985593
    Abstract: Apparatus for GPC/TREF and TREF/GPC characterization of a polymer sample. The apparatus provides for the automated and integrated use of multiple TREF columns and a GPC system employing a multiple flow through detectors. In addition, a method for TREF/GPC characterization of a polymer sample by GPC analysis of TREF fractions at increasing TREF elution temperatures from multiple TREF columns operated in a coordinated and synchronized temperature cycle for increased sample throughput. Also, a method for GPC/TREF characterization of a polymer sample by GPC fractionation followed by TREF fractionation of the GPC fractionations.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: July 26, 2011
    Assignee: Dow Global Technologies LLC
    Inventors: David T. Gillespie, Colin Li Pi Shan, Lonnie G. Hazlitt, Alexander W. DeGroot, Peter B. Arnoudse, Charles Allen Williams
  • Apparatus and Method for Polymer Characterization
    Publication number: 20080166817
    Abstract: Apparatus for GPC/TREF and TREF/GPC characterization of a polymer sample. The apparatus provides for the automated and integrated use of multiple TREF columns and a GPC system employing a multiple flow through detectors. In addition, a method for TREF/GPC characterization of a polymer sample by GPC analysis of TREF fractions at increasing TREF elution temperatures from multiple TREF columns operated in a coordinated and synchronized temperature cycle for increased sample throughput. Also, a method for GPC/TREF characterization of a polymer sample by GPC fractionation followed by TREF fractionation of the GPC fractionations.
    Type: Application
    Filed: January 19, 2006
    Publication date: July 10, 2008
    Inventors: David T. Gillespie, Colin Li Pi Shan, Lonnie G. Hazlitt, Alexander W. Degroot, Peter B. Arnoudse, Charles Allen Williams