Patents by Inventor Jay A. Dickerson

Jay A. Dickerson 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).

  • Strength of paper made from pulp containing surface active, carboxyl compounds
    Patent number: 6228217
    Abstract: This invention is directed to a process for preparing an aqueous papermaking suspension containing a polyelectrolyte complex comprising providing an aqueous suspension of pulp fibers containing a water-soluble cationic polymer and a water-soluble anionic polymer that are reactable in the aqueous suspension to form the polyelectrolyte complex, and a multivalent cation having at least a +3 charge, and forming the polyelectrolyte complex. It also includes the process wherein the aqueous suspension of pulp fibers contains surface active carboxyl compounds and water-soluble anionic compounds. It further includes the process wherein the aqueous papermaking suspension is sheeted and dried to obtain paper of improved strength.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: May 8, 2001
    Assignee: Hercules Incorporated
    Inventors: Jay A. Dickerson, Harry J. Goldy, Douglas C. Smith, Ronald R. Staib