Gerd Heppke

Person

Berlin, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Electro-optical devices from banana-shaped liquid crystals
- Patent number 6,924,009
- Issue date Aug 2, 2005
- Kent State University
- Antal Jakli
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Compounds having side chains with multiple methyl branches and thei...
- Patent number 5,776,363
- Issue date Jul 7, 1998
- Hoechst Aktiengesellschaft
- Barbara Hornung
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Switchable columnar liquid-crystalline systems
- Patent number 5,384,068
- Issue date Jan 24, 1995
- Hoechst Aktiengesellschaft
- Harald Bock
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Liquid crystal phase
- Patent number 5,236,618
- Issue date Aug 17, 1993
- Merck Patent Gesellschaft mit beschrankter Haftung
- Gerd Heppke
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chiral esters of mesogenic carboxylic acids in liquid crystal phases
- Patent number 5,043,095
- Issue date Aug 27, 1991
- Hoechst Aktiengesellschaft
- Christian Bahr
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Chiral smetic liquid crystals and glassy materials containing the s...
- Patent number 4,997,591
- Issue date Mar 5, 1991
- Hoechst Aktiengesellschaft
- Gerd Heppke
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Liquid crystal phase containing admixtures which effect temperature...
- Patent number 4,988,458
- Issue date Jan 29, 1991
- Hoechst Aktiengesellschaft
- Gerd Heppke
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Chiral esters of mesogenic carboxylic acids
- Patent number 4,939,287
- Issue date Jul 3, 1990
- Hoechst Aktiengesellschaft
- Christian Bahr
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Use of compounds or mixtures of compounds which have a chiral, orth...
- Patent number 4,927,244
- Issue date May 22, 1990
- Hoechst Aktiengesellschaft
- Christian Bahr
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chiral esters of .alpha.-substituted phenylalkanoic acids and mesog...
- Patent number 4,874,545
- Issue date Oct 17, 1989
- Hoechst Aktiengesellschaft
- Gerd Heppke
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chiral esters formed from .alpha.-substituted carboxylic acids and...
- Patent number 4,855,429
- Issue date Aug 8, 1989
- Hoechst Aktiengesellschaft
- Gerd Heppke
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chiral phenolic esters of mesogenic carboxylic acids and their use...
- Patent number 4,826,620
- Issue date May 2, 1989
- Hoechst Aktiengesellschaft
- Gerd Heppke
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Color-selective circular polarizer and its use
- Patent number 4,818,076
- Issue date Apr 4, 1989
- Merck Patent Gesellschaft mit beschrankter Haftung
- Gerd Heppke
- G02 - OPTICS
Information Patent Grant
Blue phase liquid crystal system, method of operation and its use
- Patent number 4,767,194
- Issue date Aug 30, 1988
- Merck Patent Gesellschaft mit beschrankter Haftung
- Gerd Heppke
- G02 - OPTICS
Information Patent Grant
Liquid crystal phase
- Patent number 4,744,918
- Issue date May 17, 1988
- Merck Patent Gesellschaft mit beschrankter Haftung
- Gerd Heppke
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Liquid crystal phase
- Patent number 4,650,600
- Issue date Mar 17, 1987
- Merck Patent Gesellschaft mit beschrankter Haftung
- Gerd Heppke
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Liquid-crystal mixture with a pleochroic anthraquinone dye, and met...
- Patent number 4,491,532
- Issue date Jan 1, 1985
- Siemens Aktiengesellschaft
- Gunther Scherowsky
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Liquid crystal display devices having an induced cholesteric phase
- Patent number 4,264,148
- Issue date Apr 28, 1981
- Siemens Aktiengesellschaft
- Annerose Gobl-Wunsch
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Electro-optical devices from banana-shaped liquid crystals
- Publication number 20040033321
- Publication date Feb 19, 2004
- Antal Jakli
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Gerd Heppke

Person

Patents Grantslast 30 patents

Electro-optical devices from banana-shaped liquid crystals

Compounds having side chains with multiple methyl branches and thei...

Switchable columnar liquid-crystalline systems

Liquid crystal phase

Chiral esters of mesogenic carboxylic acids in liquid crystal phases

Chiral smetic liquid crystals and glassy materials containing the s...

Liquid crystal phase containing admixtures which effect temperature...

Chiral esters of mesogenic carboxylic acids

Use of compounds or mixtures of compounds which have a chiral, orth...

Chiral esters of .alpha.-substituted phenylalkanoic acids and mesog...

Chiral esters formed from .alpha.-substituted carboxylic acids and...

Chiral phenolic esters of mesogenic carboxylic acids and their use...

Color-selective circular polarizer and its use

Blue phase liquid crystal system, method of operation and its use

Liquid crystal phase

Liquid crystal phase

Liquid-crystal mixture with a pleochroic anthraquinone dye, and met...

Liquid crystal display devices having an induced cholesteric phase

Patents Applicationslast 30 patents

Electro-optical devices from banana-shaped liquid crystals