Patents by Inventor Elizabeth F. McCord

Elizabeth F. McCord 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).

  • Polymers of substituted cyclopentenes
    Publication number: 20030055186
    Abstract: Substituted cyclopentenes, such as alkyl cyclopentenes, are polymerized by selected &agr;-imine complexes of nickel and palladium. The polymers are useful as molding resins or elastomers. Also disclosed herein are novel catalysts for the polymerization of cyclopentenes to form novel higher melting homopolycyclopentenes.
    Type: Application
    Filed: April 2, 2001
    Publication date: March 20, 2003
    Inventors: Stephan J. McLain, Elizabeth F. McCord, Alison M. Bennett, Steven D. Ittel, Mark F. Teasley
  • Process for preparing laminar articles from a mixture of a polyolefin and ethylene/vinyl alcohol copolymers
    Patent number: 5085816
    Abstract: A process for preparing a laminar article with multiple thin, overlapping layers, includes preparing a melted heterogeneous blend of a polyolefin, an ethylene-vinyl alcohol copolymer, and a compatibilizer having a specified level of grafted cyclic anhydride groups; extending the body of the melt; and cooling the extended body to below the melting point of the polyolefin.
    Type: Grant
    Filed: August 9, 1990
    Date of Patent: February 4, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Elizabeth F. McCord
  • Laminar articles made from mixtures of a polyolefin and ethylene/vinyl alcohol copolymers
    Patent number: 4971864
    Abstract: A laminar article is provided, comprising a combination of a polyolefin, an ethylene-vinyl alcohol copolymer having a melting point at least about 5.degree. C. higher than the polyolefin, and a compatibilizer of a compatible polyolefin backbone grafted with cyclic anhydride moieties, wherein the ethylene-vinyl alcohol copolymer is present within the polyolefin as multiple, thin, substantially parallel, overlapping layers.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: November 20, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Elizabeth F. McCord