Patents by Inventor Charles F. Gibbons

Charles F. Gibbons 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).

  • Paperboard laminates having polar copolymer/nonpolar polymer blend surface coatings
    Patent number: 5196269
    Abstract: The present invention relates to a novel coextrusion coating for paper or paperboard substrates. The coextrusion includes a nonpolar polymer layer and a thin exterior skin layer made up of a nonpolar polymer and a polar copolymer. The addition of the polar polymer improves long term treatment level retention which improves long term wettability for printing and gluing adhesion during package or carton formation.
    Type: Grant
    Filed: November 22, 1991
    Date of Patent: March 23, 1993
    Assignee: International Paper Company
    Inventors: James M. Kittrell, Charles F. Gibbons, Allan A. Whillock, Joe L. Kinsey, Jr., Cynthia L. Tanner