Patents by Inventor Patricia Elliot

Patricia Elliot 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).

  • Pearlescent glass pigment
    Patent number: 6045914
    Abstract: A pearlescent pigment comprises C glass flakes having a first layer comprising rutile titanium dioxide or iron oxide thereon and a second layer comprising hydrous oxide or hydroxide of a polyvalent cation, precipitate of said polyvalent cation, and an anionic polymeric compound. A hydrous layer of the rutile forming titanium dioxide or iron oxide is first formed on the glass flakes and the resulting coated flakes are calcined prior to the application of the second layer.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: April 4, 2000
    Assignee: Engelhard Corporation
    Inventors: William J. Sullivan, Patricia Elliot, Dana Fleming
  • Pearlescent glass pigment
    Patent number: 5753371
    Abstract: A pearlescent pigment consists essentially of C glass flakes having a layer comprising rutile titanium dioxide or iron oxide thereon. A hydrous layer of the rutile forming titanium dioxide or iron oxide is formed on the glass flakes and the resulting coated flakes are calcined.
    Type: Grant
    Filed: June 3, 1996
    Date of Patent: May 19, 1998
    Assignee: The Mearl Corporation
    Inventors: William J. Sullivan, Patricia Elliot, Dana Fleming