Patents by Inventor Constance K. Klaisner

Constance K. Klaisner 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).

  • Process for increasing the dry strength of paper
    Patent number: 6723204
    Abstract: Addition of a premixed aqueous mixture of anionic dry strength resin and cationic or amphoteric starch to a paper making pulp slurry yields paper with higher dry strength than paper that is the same except that the starch and dry strength resin are added separately.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: April 20, 2004
    Assignee: Hercules Incorporated
    Inventors: Joseph Donald Van Handel, Constance K. Klaisner, John C. Gast
  • Process for increasing the dry strength of paper
    Publication number: 20030188840
    Abstract: Addition of a premixed aqueous mixture of anionic dry strength resin and cationic or amphoteric starch to a paper making pulp slurry yields paper with higher dry strength than paper that is the same except that the starch and dry strength resin are added separately.
    Type: Application
    Filed: April 8, 2002
    Publication date: October 9, 2003
    Inventors: Joseph Donald Van Handel, Constance K. Klaisner, John C. Gast