Patents by Inventor John W. Walzer, JR.

John W. Walzer, JR. 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).

  • Multiple catalyst system and polymerization process for use thereof
    Patent number: 9422382
    Abstract: This invention relates to a catalyst system comprising a half sandwich chromocene compound featuring a tethered N-donor, with an alumoxane and consequent supportation on silica produces a catalyst that produces ultra-high molecular weight polyethylene and that further supportation of a catalyst capable of producing linear low density polyethylene produces a multiple-catalyst system on the same support, capable of producing polyethylene with a bimodal molecular weight distribution and excellent molecular weight.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: August 23, 2016
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Glen E. Alliger, John W. Walzer, Jr.
  • Multiple Catalyst System and Polymerization Process For Use Thereof
    Publication number: 20150361200
    Abstract: This invention relates to a catalyst system comprising a half sandwich chromocene compound featuring a tethered N-donor, with an alumoxane and consequent supportation on silica produces a catalyst that produces ultra-high molecular weight polyethylene and that further supportation of a catalyst capable of producing linear low density polyethylene produces a multiple-catalyst system on the same support, capable of producing polyethylene with a bimodal molecular weight distribution and excellent molecular weight.
    Type: Application
    Filed: July 8, 2015
    Publication date: December 17, 2015
    Inventors: Glen E. Alliger, John W. Walzer, JR.