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Heinz Rieger
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Hofheim am Taunus, DE
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last 30 patents
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Patent Grant
Polymer sensor
Patent number
5,958,787
Issue date
Sep 28, 1999
Ticona GmbH
Axel Schonfeld
G01 - MEASURING TESTING
Information
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
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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
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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
Process for producing ferroelectric liquid-crystal cells
Patent number
5,361,152
Issue date
Nov 1, 1994
Hoechst Aktiengesellschaft
Takamasa Harada
G02 - OPTICS