Patents by Inventor Thottinal A. Mathew

Thottinal A. Mathew 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).

  • Branched crystalline polypropylene
    Patent number: 7439312
    Abstract: Branched crystalline polypropylene compositions and methods for the preparation of branched crystalline polypropylene compositions are provided. For example, described herein is a process of preparing a branched crystalline polypropylene composition that includes combining two or more different metallocene catalyst compounds with a polymerization medium that includes propylene, for a time sufficient to provide branched crystalline polypropylene that has from 0.0 wt % to 2.0 wt % ethylene and a heat of fusion of 70 J/g or more.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: October 21, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Palanisamy Arjunan, Thottinal A. Mathew, Patrick Brant, James C. Vizzini
  • Branched crystalline polypropylene
    Publication number: 20040132935
    Abstract: Branched crystalline polypropylene compositions and methods for the preparation of branched crystalline polypropylene compositions are provided. For example, described herein is a process of preparing a branched crystalline polypropylene composition that includes combining two or more different metallocene catalyst compounds with a polymerization medium that includes propylene, for a time sufficient to provide branched crystalline polypropylene that has from 0.0 wt % to 2.0 wt % ethylene and a heat of fusion of 70 J/g or more.
    Type: Application
    Filed: October 9, 2003
    Publication date: July 8, 2004
    Inventors: Palanisamy Arjunan, Patrick Brant, Thottinal A. Mathew, James Charles Vizzini
  • Branched crystalline polypropylene
    Publication number: 20040127649
    Abstract: Branched crystalline polypropylene compositions and methods for the preparation of branched crystalline polypropylene compositions are provided. For example, described herein is a process of preparing a branched crystalline polypropylene composition that includes combining two or more different metallocene catalyst compounds with a polymerization medium that includes propylene, for a time sufficient to provide branched crystalline polypropylene that has from 0.0 wt % to 2.0 wt % ethylene and a heat of fusion of 70 J/g or more.
    Type: Application
    Filed: October 10, 2003
    Publication date: July 1, 2004
    Inventors: Palanisamy Arjunan, Thottinal A. Mathew, Patrick Brant, James C. Vizzini