Patents by Inventor Madeleine Petronella Jansen

Madeleine Petronella Jansen 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).

  • Detergent compositions comprising immobilized enzymes
    Patent number: 6030933
    Abstract: The present invention relates to detergent compositions comprising one or more enzymes which are immobilized by a covalent binding on an activated polymer. Such enzymes are preferably bound to the activated polymer via a spacer molecule. The enzymes are selected from a variety of enzymes including, for example, cellulases, hemicellulases, peroxidases, proteases, glucoamylases, amylases, lipases, cutinases, pectinases, reductases, oxidases, phenoloxidases, lipoxygenases, laccases, ligninases, pullulanases, xylanases, tannases, pentosanases, manlanases, .beta.-glucanases, arabinosidases, and mixtures thereof. The polymer is selected from a variety of polymers. A preferred polymer for use in the present invention is polyethylene glycol.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: February 29, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Ivan Maurice Alfons Jan Herbots, Madeleine Petronella Jansen, Andre Cesar Baeck, Jean Wevers
  • Liquid detergent compositions containing cellulase and amine
    Patent number: 5883066
    Abstract: The present invention is a liquid detergent composition containing anionic surfactant and cellulase. Said composition further comprises hydrophobic amines as cellulase stabilizers.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: March 16, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Ivan Maurice Alfons Jan Herbots, Madeleine Petronella Jansen