Patents Assigned to Merck Patent Beschraenkter Haftung
  • Fluorinated (dihydro)phenanthrene derivatives, and their use in liquid-crystalline media
    Patent number: 6793984
    Abstract: The invention relates to liquid-crystalline (dihydro)phenanthrene derivatives of the formula I in which R, G, A1, Z1, m, L1, L2, L3, L4, L5 and Y are as defined in claim 1, and to liquid-crystalline media comprising at least one (dihydro)phenanthrene derivative of the formula I, and to electro-optical displays containing a liquid-crystalline medium of this type.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: September 21, 2004
    Assignee: Merck Patent Beschraenkter Haftung
    Inventors: Matthias Bremer, Detlef Pauluth, Michael Heckmeier, Hans-Rolf Dübal, Barbara Hornung, Wolfgang Schmidt, Rainer Wingen