Patents by Inventor Anthony C. Tansley

Anthony C. Tansley 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).

  • System for sizing paper and cardboard
    Patent number: 5626719
    Abstract: A process for increasing the resistance of the cut edges of liquid packaging board to penetration by hot hydrogen peroxide, comprising adding to an aqueous pulp slurry at a neutral to alkaline pH, either separately or in preblended form an aqueous emulsion of a cellulose-reactive size, a non-cellulose-reactive size selected from the group consisting of waxes, bis-stearamides, and fatty acid derivatives, and a thermosetting resin that is capable of covalent bonding to cellulose fibre and self-cross-linking.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 6, 1997
    Assignee: Hercules Incorporated
    Inventors: Anthony C. Tansley, John D. Ballantine
  • System for sizing paper and cardboard
    Patent number: 5456800
    Abstract: A process for increasing the resistance of the cut edges of liquid packaging board to penetration by hot hydrogen peroxide, comprising adding to an aqueous pulp slurry at a neutral to alkaline pH, either separately or in preblended form an aqueous emulsion of a cellulose-reactive size, a non-cellulose-reactive size selected from the group consisting of waxes, bis-stearamides, and fatty acid derivatives, and a thermosetting resin that is capable of covalent bonding to cellulose fiber and self-cross-linking.
    Type: Grant
    Filed: July 19, 1993
    Date of Patent: October 10, 1995
    Assignee: Hercules Incorporated
    Inventors: Anthony C. Tansley, John D. Ballantine