Patents by Inventor Karin Susanne Maria Walter

Karin Susanne Maria Walter 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 of producing high-yield pulp
    Patent number: 8268122
    Abstract: The present invention relates to a process for preparing a high-yield pulp comprising a) treating a lignocellulose containing material chemically by means of an oxidizing system comprising at least one non-enzymatic oxidant substantially free from ozone and chlorine dioxide and an activator at a pH from about 2 to about 6.5; and b) treating the lignocellulose containing material mechanically for a time sufficient to produce a high-yield pulp, wherein the lignocellulose containing material is chemically treated prior to and/or during any mechanical treatment stage, and wherein the lignocellulose containing material is not chemically treated at a pH from about 11.5 to about 14 between stages a) and b).
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: September 18, 2012
    Assignee: Akzo Nobel N.V.
    Inventors: Karin Susanne Maria Walter, Eva Linnea Elisabeth Wackerberg, Magnus Lars Paulsson