Patents by Inventor Rudolf Willem Pieter van Drunen

Rudolf Willem Pieter van Drunen 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).

  • Enzymatic oxidation process
    Patent number: 6080573
    Abstract: There is provided an enzymatic oxidation process wherein a substance which is to be oxidised is reacted with (a) an enzyme exhibiting peroxidase activity and a source of hydrogen peroxide or an enzyme exhibiting oxidase activity on phenolic compounds and (b) a compound which enhances the oxidation activity of the enzyme, characterized in that the compound specifically binds the substance which is to be oxidized. Furthermore, there is provided an enzymatic stain bleaching or anti dye-transfer composition comprising: (a) an enzyme exhibiting peroxidase activity and a source of hydrogen peroxide or an enzyme exhibiting oxidase activity on phenolic compounds and (b) a compound which enhances the oxidation activity of the enzyme and which is capable of binding selectively to a stain chromophore or textile dye in solution.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: June 27, 2000
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Daniel Convents, Rudolf Willem Pieter van Drunen, Cornelis Theodorus Verrips
  • Detergent compostion
    Patent number: 5872093
    Abstract: A detergent composition with excellent color care properties. The detergent composition comprises a dendritic macromolecule.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: February 16, 1999
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Daniel Convents, Rudolf Willem Pieter van Drunen, Jean Hypolites Koek