Inventor · disambiguated record
Dieter Ohlendorf
Also filed as: OHLENDORF DIETER
32 granted patents·297 citations·filing 1984–1995
97Inventor score
Files withHOECHST AG32
Top patents by PatentIndex Score
32 records- 0185US4927244AUse of compounds or mixtures of compounds which have a chiral, orthogonal, more highly ordered smectic phase in the range of said phase as switching or indicating mediumHOECHST AG·Filed 1988·Granted May 22, 1990·22 cites·3 claims
- 0285US4828765AOxyalkylated quaternary ammonium compounds and their use as drag reducing agentsHOECHST AG·Filed 1988·Granted May 9, 1989·23 cites·7 claims
- 0378US4988459AUse 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
- 0472US4906752ALiquid-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
- 0571US5384070AUse 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
- 0669US5407599ACyclopropylaklyl 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
- 0768US4985172AChiral aryloxypropionates, and the use thereof as dopes in liquid-crystal phasesHOECHST AG·Filed 1987·Granted Jan 15, 1991·8 cites·9 claims
- 0867US5430564AProcess for producing ferroelectric liquid-crystal cells with oleophilic additive employing heat and low pressure overlapped a short timeHOECHST AG·Filed 1993·Granted Jul 4, 1995·22 cites·4 claims
- 0963US5118538AElectrically conductive polymers and their use as orienting layer in liquid-crystal switching and display elementsHOECHST AG·Filed 1990·Granted Jun 2, 1992·20 cites·7 claims
- 1062US5257122AFerroelectric liquid crystal display having gray steps or a continuous gray scaleHOECHST AG·Filed 1990·Granted Oct 26, 1993·24 cites·6 claims
- 1158US5071589ALiquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixturesHOECHST AG·Filed 1988·Granted Dec 10, 1991·13 cites·29 claims
- 1258US4876028AChiral 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
- 1357US4906401AUse of liquid-crystal 5-phenylpyrimidine derivatives as components of smectic liquid-crystal mixturesHOECHST AG·Filed 1989·Granted Mar 6, 1990·12 cites·5 claims
- 1456US4855429AChiral esters formed from α-substituted carboxylic acids and mesogenic hydroxyl compounds, and their use as dopants in liquid-crystalline phasesHOECHST AG·Filed 1987·Granted Aug 8, 1989·4 cites·7 claims
- 1556US4705860AQuaternary ammonium salts and their use as drag reducing agentsHOECHST AG·Filed 1986·Granted Nov 10, 1987·5 cites·3 claims
- 1652US5361152AProcess for producing ferroelectric liquid-crystal cellsHOECHST AG·Filed 1991·Granted Nov 1, 1994·18 cites·2 claims
- 1752US4859418AProcess and compositions for corrosion inhibition of metallic materialsHOECHST AG·Filed 1986·Granted Aug 22, 1989·11 cites·5 claims
- 1849US5353136AFerroelectric liquid crystal with positive dielectric anisotropy, chevron structure and grey scaleHOECHST AG·Filed 1990·Granted Oct 4, 1994·9 cites·4 claims
- 1948US5348684AOrganosilylalkyl 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
- 2048US4891151ALiquid-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
- 2139US5651918AOptically 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
- 2235US5328638AOptically 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
- 2335US5286409ALiquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixturesHOECHST AG·Filed 1990·Granted Feb 15, 1994·3 cites·15 claims
- 2434US5378394AFerroelectric liquid-crystalline mixturesHOECHST AG·Filed 1990·Granted Jan 3, 1995·3 cites·9 claims
- 2534US4915868AOptically active esters of 1-acylproline as dopes in liquid-crystal mixtures, and novel optically active esters of 1-acylprolineHOECHST AG·Filed 1987·Granted Apr 10, 1990·3 cites·4 claims
- 2633US5312553AMixtures of organic ammonium salts as flow acceleratorsHOECHST AG·Filed 1989·Granted May 17, 1994·0 cites·11 claims
- 2732US4968798ALiquid-crystalline, 1-substituted piperidine-4-carboxylic acid estersHOECHST AG·Filed 1988·Granted Nov 6, 1990·2 cites·3 claims
- 2831US5641428AUse 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
- 2931US5594575AFerroelectric 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
- 3031US5356542AMixtures of organic ammonium salts and their use as flow acceleratorsHOECHST AG·Filed 1992·Granted Oct 18, 1994·0 cites·11 claims
- 3130US5354500AOptically 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
- 3229US4584109AMethod of controlling the mobility of flows through fissures, slits or poresHOECHST AG·Filed 1984·Granted Apr 22, 1986·1 cites·8 claims
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