Patents by Inventor Andreas Stübbe

Andreas Stübbe 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).

  • Aqueous carbon black dispersions
    Patent number: 6685769
    Abstract: Aqueous carbon black dispersions contain carbon black and cationic and non-ionic surfactants in addition to water. The dispersions are produced by dispersing the carbon black and the other components in water with bead mills, ultrasonic mills or an Ultra Turrax mixer. The dispersions can be used to produce inks, lacquers and printing inks.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: February 3, 2004
    Assignee: Degussa-Huls AG
    Inventors: Alfons Karl, Horst Kleinhenz, Werner Kalbitz, Gerd Tauber, Andreas Stübbe, Johann Mathias
  • Aqueous carbon black dispersions
    Patent number: 6451100
    Abstract: Aqueous carbon black dispersions contain carbon black and cationic surfactants in addition to water. The aqueous carbon black dispersions are produced by dispersing the carbon black and other components in water with bead mills, ultrasonic mills or an Ultra Turrax mixer. The dispersions can be used to produce inks, lacquers and printing inks.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: September 17, 2002
    Assignee: Degussa-Huls AG
    Inventors: Alfons Karl, Horst Kleinhenz, Werner Kalbitz, Johann Mathias, Gerd Tauber, Andreas Stübbe
  • Ink mixture
    Patent number: 6224660
    Abstract: The ink mixture contains at least one organosilane and optionally at least one hydrophobic silicic acid. The ink mixture can be used as a printing ink, especially as an ink for ink-jet printing.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: May 1, 2001
    Assignee: Degussa-Huls Aktiengesellschaft
    Inventors: Andreas Stübbe, Wolfgang Lortz, Thomas Göbel, Holger Glaum