Patents by Inventor Peggy Hagberg

Peggy Hagberg 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).

  • Modified starch
    Patent number: 6670470
    Abstract: The present invention relates to a process for the preparation of a stable, chlorine free modified starch which is useful in paper coating and sizing. In the process, starch is degraded by catalyzed hydrogen peroxide oxydation, and stabilized by acetyl esterification, combined with crosslinking of the starch.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: December 30, 2003
    Assignee: Raisio Chemicals Ltd.
    Inventors: Hannu Ketola, Peggy Hagberg