Patents by Inventor Karl Osterried

Karl Osterried 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).

  • Surface-modified pigments
    Patent number: 5468289
    Abstract: The present invention relates to surface-modified pigments based on platelet-like substrates which, for improving the settling and redispersion behavior, have been recoated with a mixture comprising two metal oxides selected from the group consisting of silica, alumina and zirconium dioxide.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: November 21, 1995
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Gerhard Herget, Margarete Herbski, Karl Osterried
  • Precursor preparation for the production of neutral metal oxide sols
    Patent number: 5389361
    Abstract: The invention relates to a preparation which is suitable for preparing a neutral metal oxide sol and contains 35-75% by weight of one or more metal oxide sols or metal oxide hydrates and 15-45% by weight of one or more hydroxycarboxylic acids and/or hydroxycarboxylic acid derivatives as stabilizers.
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: February 14, 1995
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Karl Osterried, Wolfgang Hechler, Hans-Dieter Bruckner, Roland Martin
  • Glass-stable colored pigments
    Patent number: 5106419
    Abstract: Colored pigments having an improved stability in decorative colors, engobes, glazes, and enamels, based on platelet-type substrates coated with metal oxides, in which the coating is free from alkaline earth metal oxides and contains a colored metal oxide or metal hydroxide and at least 10% by weight of aluminum oxide, are outstandingly suitable for pigmenting glazes and enamels.
    Type: Grant
    Filed: March 7, 1991
    Date of Patent: April 21, 1992
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventors: Wolfgang Hechler, Karl Osterried, Manfred Weigand