Inventor
HEMMERLING WOLFGANG
DE21 patents
Patents
21 patentsUS5384070AJan 24, 1995
Use of optically active tetrahydrofuran-2-carboxylic acid esters as dopants in liquid-crystal mixtures, liquid-crystal mixtures containing same and novel optically active tetrahydrofuran-2-carboxylic acid esters
HOECHST AG26 citations92
US5071589ADec 10, 1991
Liquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixtures
HOECHST AG13 citations74
US4985172AJan 15, 1991
Chiral aryloxypropionates, and the use thereof as dopes in liquid-crystal phases
HOECHST AG8 citations74
US4906401AMar 6, 1990
Use of liquid-crystal 5-phenylpyrimidine derivatives as components of smectic liquid-crystal mixtures
HOECHST AG12 citations74
US4906752AMar 6, 1990
Liquid-crystal 5-phenylpyrimidine derivatives having sc or sc* phases and a process for preparing them
HOECHST AG9 citations74
US4876028AOct 24, 1989
Chiral aryl-2,3-epoxyalkyl-ethers and the corresponding thio compounds thereof, and the use thereof as dopes in liquid-crystal phases
HOECHST AG13 citations74
US5407599AApr 18, 1995
Cyclopropylaklyl or -alkenyl or heterocyclic compounds, process for their preparation and their use in liquid-crystalline mixtures
HOECHST AG11 citations73
US5348684ASep 20, 1994
Organosilylalkyl or organosilylalkenyl compounds, process for preparing them and their use in liquid-crystalline mixtures
HOECHST AG9 citations73
US5231528AJul 27, 1993
Ferroelectric liquid crystal components having high spontaneous polarization and low helical pitch
HOECHST AG12 citations73
US4988459AJan 29, 1991
Use of optically active oxirane-2-carboxylic acid esters as dopants in liquid-crystal mixtures, liquid-crystal mixtures containing same and novel optically active oxirane-2-carboxylic acid esters
HOECHST AG14 citations72
US4891151AJan 2, 1990
Liquid-crystalline phenylpyrimidinyl cyclohexanecarboxylates having a smectic phase, a process for their preparation, and their use in liquid-crystal mixtures
HOECHST AG2 citations63
US5378394AJan 3, 1995
Ferroelectric liquid-crystalline mixtures
HOECHST AG3 citations62
US5328638AJul 12, 1994
Optically active esters of 5-ethyl- and 5-vinyl-1,3-dioxolane-4-carboxylic acid, their use as doping substances in liquid crystal mixtures and the liquid crystal mixtures containing the new esters
HOECHST AG3 citations62
US5286409AFeb 15, 1994
Liquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixtures
HOECHST AG3 citations62
US5651918AJul 29, 1997
Optically active 1,3-dioxolane derivatives carrying a mesogenic radical in the 4-position, a process for their preparation and their use as doping agents in liquid-crystal mixtures
HOECHST AG6 citations61
US5594575AJan 14, 1997
Ferroelectric liquid-crystal systems having three or more chiral additives with different signs of the helical twist in the cholesteric phase
HOECHST AG1 citations52
US5370823ADec 6, 1994
Pyrimidinecyclohexane derivatives, process for their preparation, and their use in liquid-crystalline mixtures
HOECHST AG0 citations52
US5360576ANov 1, 1994
Chiral alkenylaryl 2,3-epoxyalkyl ethers, and the use thereof in liquid-crystalline mixtures
HOECHST AG1 citations50
US5641428AJun 24, 1997
Use of optically active 1,3-dioxolane-4-carboxylates as dopes in liquid-crystal mixtures, liquid-crystal mixtures containing these compounds, and novel optically active 1,3-dioxolane-4-carboxylates
HOECHST AG0 citations42
US5443754AAug 22, 1995
Pyridylpyrimidines, a process for their preparation and their use in liquid-crystalline mixtures
HOECHST AG0 citations41
US5354500AOct 11, 1994
Optically active carboxylic esters of oxygen-containing heterocycles as doping substances in liquid crystal mixtures and liquid crystal mixtures containing them
HOECHST AG0 citations41