Inventor

Andreas Wachtler

Inventor

Griesheim, DE

Overview

1987–2007

Patent span

Chemistry

Primary field (CPC C)

Patents· 62 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C09Kprimary

C09KMaterials for miscellaneous applications, not provided for elsewhere49%

C07CAcyclic or carbocyclic compounds28%

C07DHeterocyclic compounds19%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium3%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein1%

PatentTitleYear

7,250,199'Phenylcyclohexanes and a liquid-crystalline medium'2007 6,955,837'Phenylcyclohexanes and a liquid-crystalline medium'2005 6,710,198'Perfluoro-n-alkylsulfonic acid derivatives'2004 6,677,002'Phenylcyclohexanes and a liquid-crystalline medium'2004 6,353,125'Perfluoro-n-alkylsulfonic acid derivatives'2002 6,326,066'1,4-disubstituted 2,6-difluorobenzene compounds, and a liquid-crystalline medium'2001 6,284,154'Phenylcyclohexanes and a liquid-crystalline medium'2001 6,200,654'1,4-disubstituted 2,6-difluorobenzene compounds, and a liquid-crystalline medium'2001 6,177,594'4-(4-oxocyclohexyl) benzamides as intermediate products for medicaments'2001 6,146,720'Electro-optical liquid-crystal display'2000 5,993,691'Electro-optical liquid crystal display'1999 5,891,360'Phenylcyclohexanes and a liquid-crystalline medium'1999 5,811,029'Benzene derivatives, and a liquid-crystalline medium'1998 5,565,140'Halogenated benzene derivatives, and a liquid-crystalline medium'1996 5,478,496'Media containing thiazole derivatives and thiadiazole derivatives and having a smectic liquid-crystalline phase'1995 5,458,805'Phenylcyclohexanes and a liquid-crystalline medium'1995 5,393,459'Optically active compounds, and a liquid-crystalline phase'1995 5,389,295'Benzene derivatives, and a liquid crystal medium'1995 5,348,677'Electro-optical liquid crystal display element'1994 5,340,497'Fluorophenylpyrimidines'1994 5,308,541'Halogenated benzene derivatives, and a liquid-crystalline medium'1994 5,288,427'Electrooptical display element'1994 5,279,764'Dihalogenobenzene derivatives'1994 5,273,680'Fluorinated oligophenyls and their use in liquid crystal materials'1993 5,250,220'2,5-disubstituted heterocyclic compounds, and a liquid-crystalline medium'1993 5,248,447'2,3-difluorohydroquinone derivatives'1993 5,236,620'2,3-difluorobenzene derivatives'1993 5,232,624'Chiral 1,2-difluorobenzene derivatives'1993 5,230,827'Derivatives of 2,3-difluorobenzoic acid'1993 5,211,878'Difluorobenzonitrile derivatives'1993 5,209,866'Heterocyclic 1,2-difluorobenzene derivatives'1993 5,204,019'2,3-difluorobiphenyls'1993 5,204,476'Fluorophenylpyridines'1993 5,198,149'Smectic liquid-crystal medium'1993 5,196,140'Electro-optical liquid crystal display element'1993 5,196,141'5-oxy-2-phenylpyridines, and a liquid-crystalline medium'1993 5,171,469'Liquid-crystal matrix display'1992 5,167,859'2,5-disubstituted heterocycle and liquid-crystalline phase'1992 5,164,111'Polymerizable liquid-crystal material and polymers exhibiting liquid-crystal phases'1992 5,116,527'Display element based on the electroclinic effect'1992 5,093,026'Biphenylylethanes'1992 5,075,032'Smectic liquid-crystalline phases'1991 5,068,389'Tertiary alcohols'1991 5,064,569'Optically active compounds'1991 5,055,221'Smectic liquid-crystalline phases'1991 5,002,694'Nitrogen-containing heterocyclic compounds'1991 4,985,583'Cyclohexane derivatives'1991 4,970,022'Liquid-crystalline mustard oils'1990 4,925,590'Derivatives of 4-cyano-2,3-difluorophenol'1990 4,913,837'Heterocyclic compounds'1990 4,897,216'2,3-difluorophenol derivatives'1990 4,886,620'Smectic liquid-crystalline phases'1989 4,873,019'Cyclopentane derivatives'1989 4,871,470'Cyclohexane derivatives'1989 4,853,149'Heterocyclic liquid crystal compounds'1989 4,846,998'Cyclohexane derivatives'1989 4,820,839'Nitrogen-containing heterocyclic esters'1989 4,784,471'2-fluorobenzonitrile derivatives and their use in optical display devices'1988 4,751,017'Heterocyclic boron compounds'1988 4,719,032'Cyclohexane derivatives'1988 4,707,295'Bicyclooctane derivatives'1987 4,704,227'Liquid crystal compounds'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–2007Patents assigned to MERCK PATENT GMBH (61)· patent assignee history

1987–2007Based in Griesheim, DE· patent location history

1989Based in Griescheim, DE· patent location history

1999–2004Based in Tubingen, DE· patent location history

2001Patents assigned to MERCK PATENT GES MIT RESCHANKT (1)· patent assignee history

2002Based in Tbingen, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MERCK PATENT GMBH	61	1987–2007
MERCK PATENT GES MIT RESCHANKT	1	2001

Locations

Location	Patents	Span
Griesheim, DE	56	1987–2007
Tubingen, DE	4	1999–2004
Tbingen, DE	1	2002
Griescheim, DE	1	1989