Patents by Inventor Barbro Magnusson

Barbro Magnusson 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 sizing paper
    Patent number: 7318881
    Abstract: A process for sizing paper comprising adding to an aqueous suspension containing cellulosic fibers, and optional fillers, a sizing dispersion comprising a polymer having an aromatic group, and a sizing promoter comprising a polymer having an aromatic group, wherein the sizing dispersion and the sizing promoter are added separately to the aqueous suspension.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: January 15, 2008
    Assignee: Akzo Nobel N.V.
    Inventors: Erik Lindgren, Sten Frölich, Michael Persson, Barbro Magnusson
  • Process for sizing paper
    Patent number: 6818100
    Abstract: A process for sizing paper comprising adding to an aqueous suspension containing cellulosic fibres, and optional fillers, a sizing dispersion comprising a polymer having an aromatic group, and a sizing promoter comprising a polymer having an aromatic group, wherein the sizing dispersion and the sizing promoter are added separately to the aqueous suspension.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: November 16, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Erik Lindgren, Sten Frölich, Michael Persson, Barbro Magnusson
  • Process for sizing paper
    Publication number: 20040206467
    Abstract: A process for sizing paper comprising adding to an aqueous suspension containing cellulosic fibres, and optional fillers, a sizing dispersion comprising a polymer having an aromatic group, and a sizing promoter comprising a polymer having an aromatic group, wherein the sizing dispersion and the sizing promoter are added separately to the aqueous suspension.
    Type: Application
    Filed: May 10, 2004
    Publication date: October 21, 2004
    Inventors: Erik Lindgren, Sten Frolich, Michael Persson, Barbro Magnusson
  • Process for sizing paper
    Publication number: 20020096290
    Abstract: A process for sizing paper comprising adding to an aqueous suspension containing cellulosic fibers, and optional fillers, a sizing dispersion comprising a polymer having an aromatic group, and a sizing promoter comprising a polymer having an aromatic group, wherein the sizing dispersion and the sizing promoter are added separately to the aqueous suspension.
    Type: Application
    Filed: August 6, 2001
    Publication date: July 25, 2002
    Inventors: Erik Lindgren, Sten Frolich, Michael Persson, Barbro Magnusson