Patents by Inventor Demus Dietrich

Demus Dietrich 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).

  • Ferroelectric liquid crystals
    Patent number: 4874544
    Abstract: Fast-switching displays with memory properties are provided, which can display digits, symbols, and images, and which contain as chemically and thermally stable ferroelectric liquid crystalline substances, according to the invention, liquid crystalline derivatives which contain a chiral alkyl halide residue corresponding to the general formula ##STR1## are used in mixtures of one another as well as in conjunction with other liquid crystalline or non-crystalline liquid substances.
    Type: Grant
    Filed: February 3, 1988
    Date of Patent: October 17, 1989
    Assignee: VEB Werk fuer Fernsehelektronik im VEB Kombinat Mikroelektronik
    Inventors: Bak G. Yong, Barth Petra, Demus Dietrich, Joachimi Detlev, Barbara Kampa, Saskia Kohler, Kristine Mohr, Reinhard Paschke, Gerhard Pelzl, Ulrich Rosenfeld, Wolfgang Schafer, Klaus-Dieter Scherf, Carsten Tschirske, Wolfgang Weissflog, Horst Zaschke