Patents by Inventor Gayann S. McDonnell

Gayann S. McDonnell 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).

  • Coating composition comprising an anhydride-containing polymer and a structured epoxy-containing polymer
    Patent number: 5206295
    Abstract: A coating composition, useful for finishing automobiles and trucks, in which the film forming binder contains, as reactive binder components, a mixture of a first polymer having at least two reactive anhydride groups and a second polymer or oligomer having at least two reactive epoxy groups, characterized by the second polymer being structured so that the epoxy groups are skewed to have a majority thereof at one end of the polymer.
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: April 27, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Lee R. Harper, Gayann S. McDonnell