Patents by Inventor Carolyn Sheldon

Carolyn Sheldon 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).

  • High tenacity and toughness in metallocene polypropylene films
    Publication number: 20050106973
    Abstract: A film product and a method of making the same are provided, the film product comprising a metallocene catalyzed polypropylene and a tenacity of at least about 2.5 g/den is provided. The film product is capable of being drawn at a draw ratio of from about 5.0:1 to about 10.0:1. The film product is also capable of being processed into a slit tape product. A method of weaving a woven product from the slit tape product is also provided, wherein the woven product may have a tenacity within about 10.0 percent of the tenacity of the film product.
    Type: Application
    Filed: November 14, 2003
    Publication date: May 19, 2005
    Inventors: Carolyn Sheldon, Mike Musgrave, Peter Selg, Rodney Cummings
  • Polyproplylene materials and method of preparing polypropylene materials
    Patent number: 6881793
    Abstract: A polypropylene material is prepared from a blend of heterophasic propylene copolymers and propylene homopolymers. The material is prepared by blending the polymers while they are in a molten state, and forming a film or sheet from the polymer blend. The material has particular application to forming slit film tapes and similar materials. The resultant materials exhibit increased tenacity, elongation and toughness and greater surface roughness as compared to those materials prepared solely from propylene homopolymers.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: April 19, 2005
    Assignee: Fina Technology, Inc.
    Inventors: Carolyn Sheldon, Michael Musgrave, Scott D. Cooper
  • Polyproplylene materials and method of preparing polypropylene materials
    Publication number: 20040013870
    Abstract: A polypropylene material is prepared from a blend of heterophasic propylene copolymers and propylene homopolymers. The material is prepared by blending the polymers while they are in a molten state, and forming a film or sheet from the polymer blend. The material has particular application to forming slit film tapes and similar materials. The resultant materials exhibit increased tenacity, elongation and toughness and greater surface roughness as compared to those materials prepared solely from propylene homopolymers.
    Type: Application
    Filed: July 16, 2002
    Publication date: January 22, 2004
    Inventors: Carolyn Sheldon, Michael W. Musgrave, Scott D. Cooper