Patents by Inventor Mary Ellen McKillip

Mary Ellen McKillip 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).

  • Publication number: 20030226648
    Abstract: A multiple-ply paperboard material having improved oil and grease resistance properties, and improved stain masking properties to minimize the appearance of oil and grease stains in the paperboard material, and a method for forming same. The multiple-ply paperboard includes a substantially paperboard substrate having at least two plies, including at least a top ply and a bottom ply formed of substantially paperboard material, a grease resistant coating, a pigment-based pre-coating and a pigment-based top coating. The grease resistant coating includes a fluorochemical component applied to the outer surface of the top ply and to the outer surface of the bottom ply to hinder the penetration and migration of grease and oil into said substantially paperboard substrate through both the top ply and the bottom ply. The pigment-based pre-coating is applied to the top ply over the grease resistant coating, while the top coating is applied over the pre-coating.
    Type: Application
    Filed: June 6, 2002
    Publication date: December 11, 2003
    Inventors: William T. McDonnell, Mary Ellen McKillip