Patents by Inventor Zofia Stolarz

Zofia Stolarz 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 ethane derivatives, their preparation and the liquid crystal compositions containing same
    Patent number: 4849130
    Abstract: Liquid crystalline ethane derivatives by the described method in order to form liquid crystalline compositions with known liquid crystalline compounds have a general formula I: ##STR1## wherein, if ring A idicates a 1,4-substituted benzene ring, then ring B indicates 1.4-substituted benzene ring or 1.4-trans-substituted cyclohexane ring or 1.4-substituted bicyclo[2,2,2]octane ring or 2.5-substituted pyrimidine ring or 2.5-substituted 1.3- dioxane ring, or if ring B indicates a 1.4-substituted benzene ring, then A indicates 1.4-trans-substituted cyclohexane ring or 1.4-substituted bicylo[2,2,2]octane ring or 2.5-substituted pyrimidine ring or 2.5-substituted 1.3-dioxane ring, and R indicates a normal alkyl chain C.sub.n H.sub.2n+1 or a non-branched alkoxy group C.sub.n H.sub.2n+1 O or an alkylcarboxylic group C.sub.n H.sub.2n+1 COO or an alkyl carbonato group C.sub.n H.sub.2n+1 OCOO or a branched alkyl chain CH.sub.3 --CH.sub.2 --CH(CH.sub.3)--(CH.sub.2).sub.k -- or a branched alkoxy group CH.sub.3 --CH.sub.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: July 18, 1989
    Assignees: Wojskowa Akademia Techniczna, Zaklady Kineskopowe "Unitra-Polkolor" Zaklady Kineskopow Kolorowych
    Inventors: Roman Dabrowski, Jerzy Dziaduszek, Tomasz Szczucinnski, Witold Drzewinski, Zofia Stolarz, Jozef Zmija, Janusz Parka, Bozena Sosnowska
  • Liquid crystalline isothiocyanates with dioxane ring and liquid crystalline admixtures containing same
    Patent number: 4676924
    Abstract: New compounds of the general formula: ##STR1## wherein the symbols X stand for carbon atom bonded with two hydrogen atoms /--CH.sub.2 -- group/ and the symbols Z stand for oxygen atom or the symbols X stand for oxygen atom and the symbols Z stand for carbon atom bonded with two hydrogen atoms /--CH.sub.2 -- group/, m is an integer of 1 to 2, R represents an alkyl /H.sub.2n+1 C.sub.n / or an 4-alkylphenyl /H.sub.2n+1 C.sub.n --C.sub.6 H.sub.4 / or an alkylbiphenyl /H.sub.2n+1 C.sub.n --C.sub.6 H.sub.4 --C.sub.6 H.sub.4 / or an alkylcyclohexylphenyl group /H.sub.2n+1 C.sub.n --C.sub.6 H.sub.10 --C.sub.6 H.sub.4 /, the term alkyl group signifies an alkyl chain containing 1 to 15 carbon atoms or it also signifies a branched-chain alkyl group C.sub.2 H.sub.5 --CH/CH.sub.3 /--/CH.sub.2 /.sub.k where k in an integer of 1 to 3, have utility as liquid crystals. A process for manufacture of compounds of the general formula I.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: June 30, 1987
    Assignee: Wojskowa Akademia Techniczna
    Inventors: Roman Dabrowski, Jerzy Dziaduszek, Jaroslaw Szulc, Zygfryd Witkiewicz, Zofia Stolarz, Krystyna Kenig, Gabriela Adamska
  • Liquid crystalline cyclohexylbenzene derivatives their preparation and the liquid compositions containing same
    Patent number: 4528116
    Abstract: Novel 4-/trans-4'-n-alkylcyclohexyl/-1-isothiocyanatobenzenes expressed by the general formula ##STR1## where n is an integer number from 1 to 12, method of their preparation and liquid crystal composition containing these novel compounds revealing a wide nematic phase range and low viscosity.
    Type: Grant
    Filed: March 29, 1984
    Date of Patent: July 9, 1985
    Assignee: Wojskowa Akademia Techniczna Im.
    Inventors: Roman Dabrowski, Jerzy Dziaduszek, Tomasz Szczucinski, Zofia Stolarz, Jerzy Zielinski, Krystyna Kenig