Inventor · disambiguated record
Wolfgang Hemmerling
Also filed as: HEMMERLING WOLFGANG
21 granted patents·146 citations·filing 1987–1995
94Inventor score
Files withHOECHST AG21
Top patents by PatentIndex Score
21 records- 0178US4988459AUse 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 estersHOECHST AG·Filed 1988·Granted Jan 29, 1991·14 cites·6 claims
- 0272US4906752ALiquid-crystal 5-phenylpyrimidine derivatives having sc or sc* phases and a process for preparing themHOECHST AG·Filed 1989·Granted Mar 6, 1990·9 cites·2 claims
- 0371US5384070AUse 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 estersHOECHST AG·Filed 1993·Granted Jan 24, 1995·26 cites·5 claims
- 0469US5407599ACyclopropylaklyl or -alkenyl or heterocyclic compounds, process for their preparation and their use in liquid-crystalline mixturesHOECHST AG·Filed 1993·Granted Apr 18, 1995·11 cites·19 claims
- 0568US4985172AChiral aryloxypropionates, and the use thereof as dopes in liquid-crystal phasesHOECHST AG·Filed 1987·Granted Jan 15, 1991·8 cites·9 claims
- 0658US5071589ALiquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixturesHOECHST AG·Filed 1988·Granted Dec 10, 1991·13 cites·29 claims
- 0758US4876028AChiral aryl-2,3-epoxyalkyl-ethers and the corresponding thio compounds thereof, and the use thereof as dopes in liquid-crystal phasesHOECHST AG·Filed 1987·Granted Oct 24, 1989·13 cites·10 claims
- 0857US4906401AUse of liquid-crystal 5-phenylpyrimidine derivatives as components of smectic liquid-crystal mixturesHOECHST AG·Filed 1989·Granted Mar 6, 1990·12 cites·5 claims
- 0956US5231528AFerroelectric liquid crystal components having high spontaneous polarization and low helical pitchHOECHST AG·Filed 1992·Granted Jul 27, 1993·12 cites·12 claims
- 1048US5348684AOrganosilylalkyl or organosilylalkenyl compounds, process for preparing them and their use in liquid-crystalline mixturesHOECHST AG·Filed 1992·Granted Sep 20, 1994·9 cites·11 claims
- 1148US4891151ALiquid-crystalline phenylpyrimidinyl cyclohexanecarboxylates having a smectic phase, a process for their preparation, and their use in liquid-crystal mixturesHOECHST AG·Filed 1988·Granted Jan 2, 1990·2 cites·5 claims
- 1239US5651918AOptically 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 mixturesHOECHST AG·Filed 1995·Granted Jul 29, 1997·6 cites·6 claims
- 1337US5360576AChiral alkenylaryl 2,3-epoxyalkyl ethers, and the use thereof in liquid-crystalline mixturesHOECHST AG·Filed 1991·Granted Nov 1, 1994·1 cites·6 claims
- 1435US5328638AOptically 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 estersHOECHST AG·Filed 1992·Granted Jul 12, 1994·3 cites·3 claims
- 1535US5286409ALiquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixturesHOECHST AG·Filed 1990·Granted Feb 15, 1994·3 cites·15 claims
- 1634US5378394AFerroelectric liquid-crystalline mixturesHOECHST AG·Filed 1990·Granted Jan 3, 1995·3 cites·9 claims
- 1732US5370823APyrimidinecyclohexane derivatives, process for their preparation, and their use in liquid-crystalline mixturesHOECHST AG·Filed 1991·Granted Dec 6, 1994·0 cites·10 claims
- 1831US5641428AUse 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-carboxylatesHOECHST AG·Filed 1992·Granted Jun 24, 1997·0 cites·6 claims
- 1931US5594575AFerroelectric liquid-crystal systems having three or more chiral additives with different signs of the helical twist in the cholesteric phaseHOECHST AG·Filed 1995·Granted Jan 14, 1997·1 cites·9 claims
- 2030US5443754APyridylpyrimidines, a process for their preparation and their use in liquid-crystalline mixturesHOECHST AG·Filed 1992·Granted Aug 22, 1995·0 cites·6 claims
- 2130US5354500AOptically active carboxylic esters of oxygen-containing heterocycles as doping substances in liquid crystal mixtures and liquid crystal mixtures containing themHOECHST AG·Filed 1992·Granted Oct 11, 1994·0 cites·7 claims
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