Inventor · Niedernhausen, DE

Ingrid Muller

23Patents
6h-index
22Co-inventors
61Inventor score

Filing activity: May 28, 1987 → Oct 18, 1995

Most-cited inventions

PatentTitleAreaCited byStatus
US4988459A 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 Physics 15 Expired
US5384070A 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 Chemistry; Metallurgy 14 Expired
US4876028A Chiral aryl-2,3-epoxyalkyl-ethers and the corresponding thio compounds thereof, and the use thereof as dopes in liquid-crystal phases Chemistry; Metallurgy 13 Expired
US5071589A Liquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixtures Chemistry; Metallurgy 11 Expired
US4906401A Use of liquid-crystal 5-phenylpyrimidine derivatives as components of smectic liquid-crystal mixtures Chemistry; Metallurgy 9 Expired
US4985172A Chiral aryloxypropionates, and the use thereof as dopes in liquid-crystal phases Performing Operations; Transporting 7 Expired
US4906752A Liquid-crystal 5-phenylpyrimidine derivatives having sc or sc* phases and a process for preparing them Chemistry; Metallurgy 6 Expired
US5348684A Organosilylalkyl or organosilylalkenyl compounds, process for preparing them and their use in liquid-crystalline mixtures Chemistry; Metallurgy 6 Expired
US5407599A Cyclopropylaklyl or -alkenyl or heterocyclic compounds, process for their preparation and their use in liquid-crystalline mixtures Chemistry; Metallurgy 6 Expired
US5876628A Compounds for use in liquid-crystal composition Chemistry; Metallurgy 4 Expired
US4855429A Chiral esters formed from .alpha.-substituted carboxylic acids and mesogenic hydroxyl compounds, and their use as dopants in liquid-crystalline phases Chemistry; Metallurgy 4 Expired
US5366657A Geminal dimethylalkyl compounds, process for their preparation and their use in liquid-crystalline mixtures Chemistry; Metallurgy 4 Expired
US5651918A 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 Chemistry; Metallurgy 3 Expired
US5200521A Cyclohexylphenylpyrimidines, process for their preparation, and their use in liquid-crystalline mixtures Chemistry; Metallurgy 3 Expired
US5328638A 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 Chemistry; Metallurgy 3 Expired
US5286409A Liquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixtures Chemistry; Metallurgy 3 Expired
US5192377A Process of producing continuously cast monotectic aluminum-silicon alloy strip and wire Chemistry; Metallurgy 3 Expired
US5378394A Ferroelectric liquid-crystalline mixtures Chemistry; Metallurgy 2 Expired
US4891151A Liquid-crystalline phenylpyrimidinyl cyclohexanecarboxylates having a smectic phase, a process for their preparation, and their use in liquid-crystal mixtures Chemistry; Metallurgy 2 Expired
US5594575A Ferroelectric liquid-crystal systems having three or more chiral additives with different signs of the helical twist in the cholesteric phase Physics 0 Expired
US5641428A 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 Chemistry; Metallurgy 0 Expired
US5354500A Optically active carboxylic esters of oxygen-containing heterocycles as doping substances in liquid crystal mixtures and liquid crystal mixtures containing them Physics 0 Expired
US5439612A Cyclohexylphenylpyrimidines, process for their preparation, and their use in liquid-crystalline mixtures Chemistry; Metallurgy 0 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.