Patents by Inventor Melanie Klassen-Memmer

Melanie Klassen-Memmer 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).

  • Liquid crystalline medium
    Patent number: 10533135
    Abstract: The present invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy (??), which is distinguished by the fact that it has a value for the ratio ?1/?n2 in the range 6-45 with a clearing point of >60° C. and a ?? of ??2.3. Media of this type are particularly suitable for electro-optical displays having active-matrix addressing based on the ECB, PA LCD, FFS or IPS effect.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: January 14, 2020
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Melanie Klassen-Memmer, Sabine Schoen
  • LIQUID CRYSTALLINE MEDIUM
    Publication number: 20170066966
    Abstract: The present invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy (??), which is distinguished by the fact that it has a value for the ratio ?1/?n2 in the range 6-45 with a clearing point of >60° C. and a ?? of ??2.3. Media of this type are particularly suitable for electro-optical displays having active-matrix addressing based on the ECB, PA LCD, FFS or IPS effect.
    Type: Application
    Filed: August 16, 2013
    Publication date: March 9, 2017
    Applicant: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Melanie KLASSEN-MEMMER, Sabine SCHOEN
  • LIQUID CRYSTALLINE MEDIUM
    Publication number: 20130335693
    Abstract: The present invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy (??), which is distinguished by the fact that it has a value for the ratio ?1/?n2 in the range 6-45 with a clearing point of >60° C. and a ?? of ??2.3. Media of this type are particularly suitable for electro-optical displays having active-matrix addressing based on the ECB, PA LCD, FFS or IPS effect.
    Type: Application
    Filed: August 16, 2013
    Publication date: December 19, 2013
    Applicant: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Melanie KLASSEN-MEMMER, Sabine SCHOEN
  • Homeotropic alignment layer
    Publication number: 20050179003
    Abstract: The invention relates to an alignment layer comprising a polymerized liquid crystal material with homeotrophic orientation, to methods of its preparation, to polymerizable liquid crystal compositions and liquid crystal polymers used for the preparation of the alignment layer, to liquid crystal devices comprising the alignment layer, and to a method of controlling the electrooptical steepness of a liquid crystal display comprising at least one alignment layer by varying the surface anchoring energy of the alignment layer.
    Type: Application
    Filed: November 22, 2001
    Publication date: August 18, 2005
    Inventors: Michael Heckmeier, Melanie Klassen-Memmer, Georg Lüssem, Kazuaki Tarumi, David Coates, Owain Parri, Mark Verrall, Mark Goulding, Stephen Kitson