Patents by Inventor Walter H. Donnellan

Walter H. Donnellan 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).

  • Heat sealed paperboard carton having a patterned solvent-based polymer coating on one side only
    Patent number: 5415340
    Abstract: Folded paperboard food cartons having a barrier polymer coating only on the interior surface and sales graphics on a substantially unplasticized clay coated exterior surface are heat sealed at contiguous areas of overlapping flaps wherein the polymer coated interior surface is in direct contact with a small portion of the clay coated exterior surface or where it is desired to secure together two portions of the clay coated exterior surface. In such heat sealing areas, small and accurately located exterior clay coated carton surface areas are printed with a patterned solvent based polymer material that is precisely applied to such areas by a printing press.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: May 16, 1995
    Assignee: Westvaco Corporation
    Inventors: Barry G. Calvert, Walter H. Donnellan, III
  • Product and process for heat sealing a paperboard carton having polymer coating on one side only
    Patent number: 5228272
    Abstract: Folded paperboard food cartons having a polymer coating only on the interior surface and sales graphics on a substantially unplasticized clay coated exterior surface are heat sealed at contiguous areas of overlapping flaps wherein the polymer coated interior surface is in direct contact with a small portion of the clay coated exterior surface, or where it is desired to secure together two portions of the clay coated exterior surface. In such heat sealing areas, small and accurately located exterior clay coated carton surface areas are primed with a water based polymer emulsion such as ethylene vinyl acetate that is precisely applied to such areas by a printing press.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: July 20, 1993
    Assignee: Westvaco Corporation
    Inventors: Barry G. Calvert, Walter H. Donnellan
  • Heat sealed paperboard carton having polymer coating on one side only
    Patent number: 5217159
    Abstract: Folded paperboard food cartons having a polymer coating only on the interior surface and sales graphics on a substantially unplasticized clay coated exterior surface are heat sealed at contiguous areas of overlapping flaps wherein the polymer coated interior surface is in direct contact with a small portion of the clay coated exterior surface or, where it is desired to secure together two portions of the clay coated exterior surface. In such heat sealing areas, small and accurately located exterior clay coated carton surface areas are primed with a water based polymer emulsion such as ethylene vinyl acetate that is precisely applied to such areas by a printing press.
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: June 8, 1993
    Assignee: Westvaco Corporation
    Inventors: Barry G. Calvert, Walter H. Donnellan