Patents by Inventor Herrmann Schubert

Herrmann Schubert 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 crystal substituted trans-4-n-alkylcyclohexanes and subst.-3-subst.-benzoyloxy-[trans-4-n-alkylcyclohexane]s
    Patent number: 4490278
    Abstract: The invention relates to liquid crystal nematic substances for electro-optical devices for the modulation of light, for the reproduction of numerals, signs and images as well as an orienting medium for spectroscopy and gas chromatography.It was found that compounds containing two or three rings, connected by carboxyl groups are new liquid crystal nematic substances of the general formula ##STR1## where R.sup.1 =C.sub.n H.sub.2n+1, CN; R.sup.2 =C.sub.m H.sub.2m+1, CN;R.sup.3 =H, CH.sub.3, C.sub.2 H.sub.5 Cl, Br; x=0 or 1; m,n=numbers from 1 to 10 are suitable for electro-optical arrangements for the modulation of transmitted or reflected light as well as for the reproduction of numeral signals and images, and further, as an orienting medium for spectroscopy and gas chromotography.Other liquid crystal substances or non-liquid crystalline substances, particularly dyes, may be added to the substances according to the invention.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: December 25, 1984
    Inventors: Herrmann Schubert, Hans-Joachim Deutscher, Horst Kresse, Dietrich Demus, Heinz Altmann, Marlies Korber, Ute Bottger
  • Nematic liquid crystal compounds
    Patent number: 4358589
    Abstract: A nematic liquid crystal compound adapted for the modulation of the transmitted or incident light and reproduction in color of numerals, symbols and images by electro-optical devices, the said compound having the formula ##STR1## wherein R.sup.1 .dbd.Br--, Cl--, C.sub.n H.sub.2n+1 --, C.sub.n H.sub.2n+1 O--, n being 1 to 10,R.sup.2 .dbd.C.sub.n H.sub.2n+1 --, n being 2 to 10,R.sup.3 .dbd.C.sub.n H.sub.2n+1 --, C.sub.n H.sub.2n+1 O--, n being 1 to 10,R.sup.4 .dbd.C.sub.n H.sub.2n+1 --, C.sub.n H.sub.2n+1 O--, n being 1 to 10.
    Type: Grant
    Filed: May 7, 1980
    Date of Patent: November 9, 1982
    Assignee: Veb Werk fur Fernsehelektronik im Veb Kombinat Mikroelektronik
    Inventors: Herrmann Schubert, Dietrich Demus, Horst Zaschke, Frank Kuschel, Gerhard Pelzl, Hans-Ulrich Nothnikz, Willibald Schliemann
  • Liquid crystals for electro-optical devices
    Patent number: 4356103
    Abstract: Liquid crystal compound for color modulation of light in electro-optical devices characterized by an oriented smectic C-phase with positive dielectric anisotropy. The compound has the property of a dichroitic dyestuff.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: October 26, 1982
    Assignee: Veb Werk fur Fernsehelektronik
    Inventors: Herrmann Schubert, Gerhard Pelzl, Horst Zaschke, Dietrich Demus, Hans-Ulrich Nothni, Frank Kuschel
  • Liquid crystal compounds
    Patent number: 4293434
    Abstract: The invention describes nematic compositions for electrooptical devices for modulation of the transmitted or incident light and for the rendition of numbers, symbols and images as orientation in the spectroscopy and gas chromatography.
    Type: Grant
    Filed: February 13, 1979
    Date of Patent: October 6, 1981
    Assignee: VEB Werk fur Fernsehelektronik Berlin im VEB Kombinat Mikroelektronik
    Inventors: Hans-Joachim Deutscher, Herrmann Schubert, Christina Seidel, Dietrich Demus, Horst Kresse