Patents Examined by Paul Thibodaau
  • Surface-modified platelet-shaped substrates
    Patent number: 6139962
    Abstract: The present invention relates to surface-modified pigments based on platelet-shaped substrates, having improved settling and reagitation characteristics, and to their preparation processes and use.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: October 31, 2000
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Gerhard Herget, Brigitte Husseini