Hans-Rolf Dübal

Person

Eltville, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Liquid crystal mixture
- Patent number 9,388,338
- Issue date Jul 12, 2016
- Merck Patent GmbH
- Ji Li
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Liquid crystal mixture
- Patent number 9,260,662
- Issue date Feb 16, 2016
- Merck Patent GmbH
- Ji Li
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Smectic liquid crystal high-contrast control or display device
- Patent number 7,019,811
- Issue date Mar 28, 2006
- Clariant International, Ltd.
- Hans-Rolf Dübal
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Liquid crystal mixture
- Patent number 6,958,176
- Issue date Oct 25, 2005
- Ji Li
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Active matrix liquid crystal device and smectic liquid crystal mixture
- Patent number 6,824,707
- Issue date Nov 30, 2004
- Clariant International Ltd.
- Haruki Amakawa
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Fluorinated (dihydro)phenanthrene derivatives, and their use in liq...
- Patent number 6,793,984
- Issue date Sep 21, 2004
- Merck Patent Beschraenkter Haftung
- Matthias Bremer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Ferroelectric active matrix displays with wide operating temperatur...
- Patent number 6,746,731
- Issue date Jun 8, 2004
- Clariant GmbH
- Toshiaki Nonaka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Monostable ferroelectric active-matrix display
- Patent number 6,704,086
- Issue date Mar 9, 2004
- Aventis Research & Technologies GmbH & Co. KG
- Hans-Rolf Dübal
- G02 - OPTICS
Information Patent Grant
Monostable ferroelectric active matrix display
- Patent number 6,661,494
- Issue date Dec 9, 2003
- Aventis Research & Technologies GmbH & Co. KG
- Hans-Rolf Dübal
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Ferroelectric liquid-crystal display with wide range of working tem...
- Patent number 6,549,188
- Issue date Apr 15, 2003
- Aventis Research & Technology Deutschland GmbH & Co.KG
- Ayako Takeichi
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Disubstituted phenanthrenes and their use in liquid-crystal mixtures
- Patent number 6,495,220
- Issue date Dec 17, 2002
- Clariant International Ltd.
- Hans-Rolf Dübal
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Active matrix displays having high contrast values
- Patent number 6,482,479
- Issue date Nov 19, 2002
- Clariant International Ltd.
- Hans-Rolf Dübal
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Ferroelectric liquid-crystal display having active matric elements
- Patent number 6,368,679
- Issue date Apr 9, 2002
- Aventis Research & Technologies GmbH & Co. KG
- Wolfgang Schmidt
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chip card with bistable display
- Patent number 6,365,238
- Issue date Apr 2, 2002
- Aventis Research & Technologies GmbH
- Hans-Rolf Dübal
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Optically active 1,3-dioxolane derivatives carrying a mesogenic rad...
- Patent number 5,651,918
- Issue date Jul 29, 1997
- Hoechst Aktiengesellschaft
- Gunter Scherowsky
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Use of optically active 1,3-dioxolane-4-carboxylates as dopes in li...
- Patent number 5,641,428
- Issue date Jun 24, 1997
- Hoechst Aktiengesellschaft
- Rainer Wingen
- 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
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-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-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
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 fluorinated aromatic polyamides as orientation layer for liq...
- Patent number 5,331,081
- Issue date Jul 19, 1994
- Hoechst Aktiengesellschaft
- Hans-Rolf Dubal
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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
Substituted aromatic polyamides as orientation layers for liquid cr...
- Patent number 5,196,501
- Issue date Mar 23, 1993
- Hoechst Aktiengesellschaft
- Hans-Rolf Dubal
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Use of polyaryl ether ketones as alignment layers
- Patent number 5,166,304
- Issue date Nov 24, 1992
- Hoechst Aktiengesellschaft
- Hans-Rolf Dubal
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
Liquid crystal mixture
- Publication number 20060011886
- Publication date Jan 19, 2006
- Ji Li
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Liquid crystal mixture
- Publication number 20040085490
- Publication date May 6, 2004
- Ji Li
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Fluorinated (dihydro)phenanthrene derivatives, and their use in liq...
- Publication number 20030227000
- Publication date Dec 11, 2003
- Merck Patent GmbH
- Matthias Bremer
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Active matrix liquid crystal device and smectic liquid crystal mixture
- Publication number 20030127627
- Publication date Jul 10, 2003
- Clariant International Ltd.
- Haruki Amakawa
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Disubstituted phenanthrenes and their use in liquid-crystal mixtures
- Publication number 20010023935
- Publication date Sep 27, 2001
- Hans-Rolf Dubal
- C07 - ORGANIC CHEMISTRY

Hans-Rolf Dübal

Person

Patents Grantslast 30 patents

Liquid crystal mixture

Liquid crystal mixture

Smectic liquid crystal high-contrast control or display device

Liquid crystal mixture

Active matrix liquid crystal device and smectic liquid crystal mixture

Fluorinated (dihydro)phenanthrene derivatives, and their use in liq...

Ferroelectric active matrix displays with wide operating temperatur...

Monostable ferroelectric active-matrix display

Monostable ferroelectric active matrix display

Ferroelectric liquid-crystal display with wide range of working tem...

Disubstituted phenanthrenes and their use in liquid-crystal mixtures

Active matrix displays having high contrast values

Ferroelectric liquid-crystal display having active matric elements

Chip card with bistable display

Optically active 1,3-dioxolane derivatives carrying a mesogenic rad...

Use of optically active 1,3-dioxolane-4-carboxylates as dopes in li...

Ferroelectric liquid-crystal systems having three or more chiral ad...

Cyclopropylaklyl or -alkenyl or heterocyclic compounds, process for...

Use of optically active tetrahydrofuran-2-carboxylic acid esters as...

Ferroelectric liquid-crystal display of high contrast and brightness

Ferroelectric liquid-crystalline mixtures

Optically active carboxylic esters of oxygen-containing heterocycle...

Ferroelectric liquid crystal with positive dielectric anisotropy, c...

Organosilylalkyl or organosilylalkenyl compounds, process for prepa...

Use of fluorinated aromatic polyamides as orientation layer for liq...

Optically active esters of 5-ethyl- and 5-vinyl-1,3-dioxolane-4-car...

Liquid-crystalline mixtures, in particular ferroelectric liquid-cry...

Ferroelectric liquid crystal display having gray steps or a continu...

Substituted aromatic polyamides as orientation layers for liquid cr...

Use of polyaryl ether ketones as alignment layers

Patents Applicationslast 30 patents

Liquid crystal mixture

Liquid crystal mixture

Fluorinated (dihydro)phenanthrene derivatives, and their use in liq...

Active matrix liquid crystal device and smectic liquid crystal mixture

Disubstituted phenanthrenes and their use in liquid-crystal mixtures