Patents by Inventor Dorine Lisa Van Brussel-Verreast

Dorine Lisa Van Brussel-Verreast 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).

  • Acidic superabsorbent polysaccharides
    Publication number: 20040236016
    Abstract: A process is disclosed for producing an acidic superabsorbent polysaccharide derivative, comprising the steps of. (a) crosslinking at least one polysaceharide containing acidic groups, such as carboxymethyl cellulose and/or 6-carboxy stanch, with a crosslinking agent to produce a gel; (b) if necessary, adjusting the pH of the polysaccharide to a value between 3.5 and 5.5; (c) comminuting the acidified polysaccharide gel; and (d) drying the comminuted polysaccharide at elevated temperature. The superabsorbent polysaccharide obtainable by this process has a pH below 5 and provides odour control when contacted with malodorous fluids.
    Type: Application
    Filed: June 28, 2004
    Publication date: November 25, 2004
    Inventors: Jeffrey Wilson Thornton, Bas Schraven, Harm Jan Thiewes, Dorine Lisa Van Brussel-Verreast, Luca Bemporad, Anne-Mieke Yvonne Wilhelmina Verwiiligen, Arie Cornelis Besemer, Pia Kalentuin
  • Acidic superabsorbent polysaccharides
    Patent number: 6765042
    Abstract: A process is disclosed for producing an acidic superabsorbent polysaccharide derivative, comprising the steps of: (a) crosslinking at least one polysaccharide containing acidic groups, such as carboxymethyl cellulose and/or 6-carboxy starch, with a crosslinking agent to produce a gel; (b) if necessary, adjusting the pH of the polysaccharide to a value between 3.5 and 5.5; (c) comminuting the acidified polysaccharide gel; and (d) drying the comminuted polysaccharide at elevated temperature. The superabsorbent polysaccharide obtainable by this process has a pH below 5 and provides odour control when contacted with malodorous fluids.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: July 20, 2004
    Assignee: SCA Hygiene Products Zeist B.V.
    Inventors: Jeffrey Wilson Thornton, Bas Schraven, Harm Jan Thiewes, Dorine Lisa Van Brussel-Verreast, Luca Bemporad, Anne-Mieke Yvonne Wilhelmina Verwiiligen, Arie Cornelis Besemer, Pia Kalentuin