Patents by Inventor Klausg Ambrosius

Klausg Ambrosius 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).

  • Carbon-containing metal oxide pigments
    Patent number: 5271771
    Abstract: The invention relates to carbon-containing plate-like pigments, obtainable by pyrolysis of carbon-containing compounds in the presence of either plate-like metal oxides or metal oxide mixtures or plate-like substrates coated with titanium dioxide and at least one further metal oxide under conditions in which the metal of the metal oxide is reduced.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: December 21, 1993
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Klaus-Dieter Franz, Klausg Ambrosius, Hans-Dieter Bruckner