Inventor

Ingrid Muller

Inventor

Hofheim, DE

Overview

1989–1999

Patent span

Chemistry

Primary field (CPC C)

Patents· 23 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C09Kprimary

C09KMaterials for miscellaneous applications, not provided for elsewhere44%

C07DHeterocyclic compounds32%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein8%

C07CAcyclic or carbocyclic compounds4%

A61MDevices for introducing media into, or onto, the body2%

B23BTurning2%

C04BLime, magnesia2%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium2%

C22CAlloys2%

C22FChanging the physical structure of non-ferrous metals and non-ferrous alloys2%

PatentTitleYear

5,876,628'Compounds for use in liquid-crystal composition'1999 5,651,918'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'1997 5,641,428'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'1997 5,594,575'Ferroelectric liquid-crystal systems having three or more chiral additives with different signs of the helical twist in the cholesteric phase'1997 5,439,612'Cyclohexylphenylpyrimidines, process for their preparation, and their use in liquid-crystalline mixtures'1995 5,407,599'Cyclopropylaklyl or -alkenyl or heterocyclic compounds, process for their preparation and their use in liquid-crystalline mixtures'1995 5,384,070'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'1995 5,378,394'Ferroelectric liquid-crystalline mixtures'1995 5,366,657'Geminal dimethylalkyl compounds, process for their preparation and their use in liquid-crystalline mixtures'1994 5,354,500'Optically active carboxylic esters of oxygen-containing heterocycles as doping substances in liquid crystal mixtures and liquid crystal mixtures containing them'1994 5,348,684'Organosilylalkyl or organosilylalkenyl compounds, process for preparing them and their use in liquid-crystalline mixtures'1994 5,328,638'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'1994 5,286,409'Liquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixtures'1994 5,200,521'Cyclohexylphenylpyrimidines, process for their preparation, and their use in liquid-crystalline mixtures'1993 5,192,377'Process of producing continuously cast monotectic aluminum-silicon alloy strip and wire'1993 5,071,589'Liquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixtures'1991 4,988,459'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'1991 4,985,172'Chiral aryloxypropionates, and the use thereof as dopes in liquid-crystal phases'1991 4,906,401'Use of liquid-crystal 5-phenylpyrimidine derivatives as components of smectic liquid-crystal mixtures'1990 4,906,752'Liquid-crystal 5-phenylpyrimidine derivatives having sc or sc* phases and a process for preparing them'1990 4,891,151'Liquid-crystalline phenylpyrimidinyl cyclohexanecarboxylates having a smectic phase, a process for their preparation, and their use in liquid-crystal mixtures'1990 4,876,028'Chiral aryl-2,3-epoxyalkyl-ethers and the corresponding thio compounds thereof, and the use thereof as dopes in liquid-crystal phases'1989 4,855,429'Chiral esters formed from .alpha.-substituted carboxylic acids and mesogenic hydroxyl compounds, and their use as dopants in liquid-crystalline phases'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–1999Patents assigned to HOECHST AG (22)· patent assignee history

1989–1997Based in Hofheim, DE· patent location history

1993Patents assigned to METALLGESELLSCHAFT AG (1)· patent assignee history

1993–1999Based in Niedernhausen, DE· patent location history

1993Based in Frankfurt am Main, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HOECHST AG	22	1989–1999
METALLGESELLSCHAFT AG	1	1993

Locations

Location	Patents	Span
Hofheim, DE	16	1989–1997
Niedernhausen, DE	6	1993–1999
Frankfurt am Main, DE	1	1993