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Gerhard Illian
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Frankfurt am Main, DE
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last 30 patents
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Patent Grant
Electrical addressing of ferroelectric liquid-crystal displays
Patent number
5,859,680
Issue date
Jan 12, 1999
Hoechst Aktiengesellschaft
Dietmar Jungbauer
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Ferroelectric liquid crystal mixture
Patent number
5,779,935
Issue date
Jul 14, 1998
Hoechst Aktiengesellschaft
Ayako Takeichi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Use of complex ligands for ions in ferroelectric liquid-crystal mix...
Patent number
5,702,639
Issue date
Dec 30, 1997
Hoechst Aktiengesellschaft
Claus Escher
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Ferroelectric liquid crystal mixture
Patent number
5,695,683
Issue date
Dec 9, 1997
Hoechst Aktiengesellschaft
Ayako Takeichi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Ferroelectric liquid-crystal systems having three or more chiral ad...
Patent number
5,594,575
Issue date
Jan 14, 1997
Hoechst Aktiengesellschaft
Claus Escher
G02 - OPTICS
Information
Patent Grant
Pyridylpyrimidines, a process for their preparation and their use i...
Patent number
5,443,754
Issue date
Aug 22, 1995
Hoechst Aktiengesellschaft
Claus Escher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Cyclopropylaklyl or -alkenyl or heterocyclic compounds, process for...
Patent number
5,407,599
Issue date
Apr 18, 1995
Hoechst Aktiengesellschaft
Armin de Meijere
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Use of optically active tetrahydrofuran-2-carboxylic acid esters as...
Patent number
5,384,070
Issue date
Jan 24, 1995
Hoechst Aktiengesellschaft
Wolfgang Hemmerling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Ferroelectric liquid-crystalline mixtures
Patent number
5,378,394
Issue date
Jan 3, 1995
Hoechst Aktiengesellschaft
Hans-Rolf Dubal
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Pyrimidinecyclohexane derivatives, process for their preparation, a...
Patent number
5,370,823
Issue date
Dec 6, 1994
Hoechst Aktiengesellschaft
Gerhard Illian
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Geminal dimethylalkyl compounds, process for their preparation and...
Patent number
5,366,657
Issue date
Nov 22, 1994
Hoechst Aktiengesellschaft
Gerhard Illian
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Optically active carboxylic esters of oxygen-containing heterocycle...
Patent number
5,354,500
Issue date
Oct 11, 1994
Hoechst Aktiengesellschaft
Wolfgang Hemmerling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Ferroelectric liquid crystal with positive dielectric anisotropy, c...
Patent number
5,353,136
Issue date
Oct 4, 1994
Hoechst Aktiengesellschaft
Claus Escher
G02 - OPTICS
Information
Patent Grant
Organosilylalkyl or organosilylalkenyl compounds, process for prepa...
Patent number
5,348,684
Issue date
Sep 20, 1994
Hoechst Aktiengesellschaft
Wolfgang Hemmerling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Use of 4-fluoropyrimidine derivatives as component for ferroelectri...
Patent number
5,344,585
Issue date
Sep 6, 1994
Hoechst Aktiengesellschaft
Rainer Wingen
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Optically active esters of 5-ethyl- and 5-vinyl-1,3-dioxolane-4-car...
Patent number
5,328,638
Issue date
Jul 12, 1994
Hoechst Aktiengesellschaft
Ingrid Muller
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Liquid-crystalline mixtures, in particular ferroelectric liquid-cry...
Patent number
5,286,409
Issue date
Feb 15, 1994
Hoechst Aktiengesellschaft
Hans-Rolf Dubal
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Ferroelectric liquid crystal display having gray steps or a continu...
Patent number
5,257,122
Issue date
Oct 26, 1993
Hoechst Aktiengesellschaft
Hans-Rolf Dubal
G02 - OPTICS
Information
Patent Grant
Ferroelectric liquid crystal components having high spontaneous pol...
Patent number
5,231,528
Issue date
Jul 27, 1993
Hoechst Aktiengesellschaft
Claus Escher
G02 - OPTICS
Information
Patent Grant
Process for the production of an impact-resistant liquid crystal sw...
Patent number
5,206,751
Issue date
Apr 27, 1993
Hoechst Aktiengesellschaft
Claus Escher
G02 - OPTICS
Information
Patent Grant
Electrically conductive polymers and their use as orienting layer i...
Patent number
5,118,538
Issue date
Jun 2, 1992
Hoechst Aktiengesellschaft
Claus Escher
G02 - OPTICS