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Peter Wegener
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D-65926 Frankfurt am Main, DE
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last 30 patents
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-...
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
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
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
Process for the preparation of thiophene derivatives
Patent number
5,100,520
Issue date
Mar 31, 1992
Hoechst Aktiengesellschaft
Steffen Dapperheld
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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Patent Grant
Soluble, electrically conductive polymers, process for preparing th...
Patent number
5,093,033
Issue date
Mar 3, 1992
Hoechst Aktiengesellschaft
Michael Feldhues
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for the preparation of thiophene ethers
Patent number
4,931,568
Issue date
Jun 5, 1990
Hoechst Aktiengesellschaft
Peter Wegener
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Continuous process for the production of chloroalkyl-sulfonyl isocy...
Patent number
4,375,436
Issue date
Mar 1, 1983
Hoechst Aktiengesellschaft
Peter Wegener
C07 - ORGANIC CHEMISTRY