Patents by Inventor Angelika Thurn-Muller

Angelika Thurn-Muller 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).

  • Platelet-like substrates
    Patent number: 5407746
    Abstract: The application relates to deagglomerated and readily dispersible platelet-like substrates with a high degree of softness, which are characterized by a content of 0.5-20% by weight of spherical particles having a small diameter in comparison with the platelet-like substrate, and to a process for their preparation and their use.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: April 18, 1995
    Assignee: Merck Patent Gesellschaft Mit Beshrankter Haftung
    Inventors: Constanze Prengel, Johann Dietz, Angelika Thurn-Muller
  • Deposition of cosmetically functional material onto pigments and fillers
    Patent number: 5310578
    Abstract: A process for coating the surface of pigment and filler particles with an oleaginous and cosmetically functional material, characterized in that an aqueous suspension of the pigment or filler is mixed with an emulsion of said oleaginous material to be coated onto the surface of pigment or filler particles, followed by adding a component capable of breaking the emulsion to the thus obtained mixture, whereby the emulsified material coalesces onto the surface of the pigment or filler particles. The thus obtained pigments or fillers exhibit excellent properties when used in cosmetics.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: May 10, 1994
    Assignee: Merck Patent Gesellschaft
    Inventors: Angelika Thurn-Muller, Jane Hollenberg, Ian Scott