Patents by Inventor Helge Bettina Kniess

Helge Bettina Kniess 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).

  • Laser-markable pigments
    Publication number: 20040157975
    Abstract: The present invention relates to laser-markable pigments which are distinguished by the fact that an absorber is coated with a marker and optionally with a diffusion barrier, to a process for the preparation of the laser-markable pigments, and to the use thereof.
    Type: Application
    Filed: November 5, 2003
    Publication date: August 12, 2004
    Inventors: Helge Bettina Kniess, Gerhard Pfaff, Matthias Kuntz, Hans-Juergen Brehm, Reiner Delp
  • Colored and coated plateletlike pigments
    Patent number: 6630018
    Abstract: The invention relates to a platelet-shaped pigment having high luster and high covering power or high transparency, consisting of a transparent, inorganic, platelet-shaped matrix which can contain an additional constituent, characterized in that the additional constituent is a soluble or insoluble colorant and in that the matrix is coated at least on one side with one or more thin, transparent or semi-transparent reflective layers of metal oxides or metals to achieve the luster.
    Type: Grant
    Filed: April 15, 1994
    Date of Patent: October 7, 2003
    Assignee: Merck Patent Gesellschaft mit beschränkter Haftung
    Inventors: Gerd Bauer, Karl Osterried, Christoph Schmidt, Reiner Vogt, Helge-Bettina Kniess, Michael Uhlig, Norbert Schül, Günther Brenner
  • COLORED AND COATED PLATELETLIKE PIGMENTS
    Publication number: 20030047115
    Abstract: The invention relates to a platelet-like pigment having high lustre and high covering power or high transparency, consisting of a transparent, inorganic, platelet-like matrix which can contain an additional constituent, characterised in that the additional constituent is a soluble or insoluble colorant and in that the matrix is coated at least on one side with one or more thin, transparent or semi-transparent reflective layers of metal oxides or metals to achieve the lustre.
    Type: Application
    Filed: April 15, 1994
    Publication date: March 13, 2003
    Inventors: GERD BAUER, KARL OSTERRIED, CHRISTOPH SCHMIDT, REINER VOGT, HELGE-BETTINA KNIESS, MICHAEL UHLIG, NORBERT SCHUL, GUNTHER BRENNER