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Norbert Rosch
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D-60529 Frankfurt/Main, DE
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last 30 patents
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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
Silane couplers containing cyclic structural elements as alignment...
Patent number
5,702,777
Issue date
Dec 30, 1997
Norbert Rosch
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Maleimide copolymer as alignment layer for liquid-crystal displays
Patent number
5,644,016
Issue date
Jul 1, 1997
Horst Roschert
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Patent Grant
Stabilized complex ligands and their use in liquid crystal displays
Patent number
5,445,762
Issue date
Aug 29, 1995
Hoechst Aktiengesellschaft
Javier Manero
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing ferroelectric liquid-crystal cells with oleop...
Patent number
5,430,564
Issue date
Jul 4, 1995
Hoechst Aktiengesellschaft
Takamasa Harada
G02 - OPTICS
Information
Patent Grant
Alignment layers containing cyclic structural elements
Patent number
5,409,635
Issue date
Apr 25, 1995
Hoechst Aktiengesellschaft
Norbert Rosch
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Modified polysugar as the alignment layer for liquid-crystal displays
Patent number
5,405,552
Issue date
Apr 11, 1995
Hoechst Aktiengesellschaft
Dietmar Jungbauer
G02 - OPTICS
Information
Patent Grant
Ferroelectric liquid-crystal display of high contrast and brightness
Patent number
5,384,168
Issue date
Jan 24, 1995
Hoechst Aktiengesellschaft
Hans-Rolf Dubal
G02 - OPTICS
Information
Patent Grant
Ferroelectric liquid crystal display with liquid crystal mixtures h...
Patent number
5,373,380
Issue date
Dec 13, 1994
Hoechst Aktiengesellschaft
Takamasa Harada
G02 - OPTICS
Information
Patent Grant
Process for producing ferroelectric liquid-crystal cells
Patent number
5,361,152
Issue date
Nov 1, 1994
Hoechst Aktiengesellschaft
Takamasa Harada
G02 - OPTICS
Information
Patent Grant
Ferroelectric liquid crystal mixtures containing lipohilizing, lipo...
Patent number
5,333,075
Issue date
Jul 26, 1994
Hoechst Aktiengesellschaft
Takamasa Harada
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Ferroelectric liquid-crystal mixtures containing mercapto compounds
Patent number
5,250,215
Issue date
Oct 5, 1993
Hoechst Aktiengesellschaft
Michael Magerstadt
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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
Macrocyclic compounds as component for ferroelectric liquid crystal...
Patent number
5,178,792
Issue date
Jan 12, 1993
Hoechst Aktiengesellschaft
Takamasa Harada
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Ionophore-containing ferroelectric liquid crystal mixtures
Patent number
5,167,856
Issue date
Dec 1, 1992
Hoechst Aktiengesellschaft
Takamasa Harada
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...