Patents by Inventor Katia Jackow

Katia Jackow 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).

  • Green decoration coloring substance for high-temperature firing, process for its production and use thereof
    Patent number: 6077797
    Abstract: The invention makes available for the first time pure green decoration coloring substances for high-temperature firing at least at 1000.degree. C., in particular at 1100 to 1250.degree. C., with a color hue angle h in the range of 160.degree..+-.20.degree.. The decoration coloring substance comprises chromium oxide as the pigment and one or several glass frits as glass flux, and additionally a cobalt compound from the series CoO, Co(OH).sub.2 and Co compounds forming CoO below or at the firing temperature, with the atomic ratio of Co to Cr being in the range of 0.01 to 0.35, preferably 0.15 to 0.25.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: June 20, 2000
    Assignee: Cerdec Aktiengesellschaft Keramische Farben
    Inventors: Jorg Sperlich, Katia Jackow, Stephan Ludwig, Dietrich Speer, Kai Dorer