Inventor
WAECHTLER ANDREAS
DE56 patents
Patents
50 patentsUS5211878AMay 18, 1993
Difluorobenzonitrile derivatives
MERCK PATENT GMBH200 citations99
US4820839AApr 11, 1989
Nitrogen-containing heterocyclic esters
MERCK PATENT GMBH50 citations96
US5279764AJan 18, 1994
Dihalogenobenzene derivatives
MERCK PATENT GMBH34 citations93
US5273680ADec 28, 1993
Fluorinated oligophenyls and their use in liquid crystal materials
MERCK PATENT GMBH43 citations93
US5236620AAug 17, 1993
2,3-difluorobenzene derivatives
MERCK PATENT GMBH28 citations93
US4925590AMay 15, 1990
Derivatives of 4-cyano-2,3-difluorophenol
MERCK PATENT GMBH30 citations93
US6146720ANov 14, 2000
Electro-optical liquid-crystal display
MERCK PATENT GMBH24 citations92
US5993691ANov 30, 1999
Electro-optical liquid crystal display
MERCK PATENT GMBH30 citations92
US5198149AMar 30, 1993
Smectic liquid-crystal medium
MERCK PATENT GMBH32 citations92
US4846998AJul 11, 1989
Cyclohexane derivatives
MERCK PATENT GMBH54 citations92
US5171469ADec 15, 1992
Liquid-crystal matrix display
MERCK PATENT GMBH38 citations91
US4873019AOct 10, 1989
Cyclopentane derivatives
MERCK PATENT GMBH30 citations91
US5891360AApr 6, 1999
Phenylcyclohexanes and a liquid-crystalline medium
MERCK PATENT GMBH11 citations82
US5458805AOct 17, 1995
Phenylcyclohexanes and a liquid-crystalline medium
MERCK PATENT GMBH17 citations82
US5389295AFeb 14, 1995
Benzene derivatives, and a liquid crystal medium
MERCK PATENT GMBH19 citations82
US5196140AMar 23, 1993
Electro-optical liquid crystal display element
MERCK PATENT GMBH20 citations82
US4985583AJan 15, 1991
Cyclohexane derivatives
MERCK PATENT GMBH19 citations82
US4886620ADec 12, 1989
Smectic liquid-crystalline phases
MERCK PATENT GMBH20 citations82
US4871470AOct 3, 1989
Cyclohexane derivatives
MERCK PATENT GMBH19 citations82
US4704227ANov 3, 1987
Liquid crystal compounds
MERCK PATENT GMBH24 citations82
US6677002B2Jan 13, 2004
Phenylcyclohexanes and a liquid-crystalline medium
MERCK PATENT GMBH6 citations74
US6284154B1Sep 4, 2001
Phenylcyclohexanes and a liquid-crystalline medium
MERCK PATENT GMBH7 citations74
US5348677ASep 20, 1994
Electro-optical liquid crystal display element
MERCK PATENT GMBH7 citations74
US5288427AFeb 22, 1994
Electrooptical display element
MERCK PATENT GMBH12 citations74
US5248447ASep 28, 1993
2,3-difluorohydroquinone derivatives
MERCK PATENT GMBH13 citations74
US5232624AAug 3, 1993
Chiral 1,2-difluorobenzene derivatives
MERCK PATENT GMBH7 citations74
US5209866AMay 11, 1993
Heterocyclic 1,2-difluorobenzene derivatives
MERCK PATENT GMBH7 citations74
US5204019AApr 20, 1993
2,3-difluorobiphenyls
MERCK PATENT GMBH19 citations74
US5167859ADec 1, 1992
2,5-disubstituted heterocycle and liquid-crystalline phase
MERCK PATENT GMBH14 citations74
US5164111ANov 17, 1992
Polymerizable liquid-crystal material and polymers exhibiting liquid-crystal phases
MERCK PATENT GMBH17 citations74
US5116527AMay 26, 1992
Display element based on the electroclinic effect
MERCK PATENT GMBH15 citations74
US5064569ANov 12, 1991
Optically active compounds
MERCK PATENT GMBH11 citations74
US5002694AMar 26, 1991
Nitrogen-containing heterocyclic compounds
MERCK PATENT GMBH9 citations74
US4970022ANov 13, 1990
Liquid-crystalline mustard oils
MERCK PATENT GMBH11 citations74
US4897216AJan 30, 1990
2,3-difluorophenol derivatives
MERCK PATENT GMBH17 citations74
US4853149AAug 1, 1989
Heterocyclic liquid crystal compounds
MERCK PATENT GMBH11 citations74
US4784471ANov 15, 1988
2-fluorobenzonitrile derivatives and their use in optical display devices
MERCK PATENT GMBH12 citations74
US4751017AJun 14, 1988
Heterocyclic boron compounds
MERCK PATENT GMBH11 citations74
US4719032AJan 12, 1988
Cyclohexane derivatives
MERCK PATENT GMBH9 citations74
US5075032ADec 24, 1991
Smectic liquid-crystalline phases
MERCK PATENT GMBH6 citations73
US4707295ANov 17, 1987
Bicyclooctane derivatives
MERCK PATENT GMBH17 citations73
US6353125B1Mar 5, 2002
Perfluoro-n-alkylsulfonic acid derivatives
MERCK PATENT GMBH12 citations71
US4913837AApr 3, 1990
Heterocyclic compounds
MERCK PATENT GMBH8 citations71
US9932337B2Apr 3, 2018
Method for the production of Praziquantel and precursors thereof
MERCK PATENT GMBH4 citations68
US5811029ASep 22, 1998
Benzene derivatives, and a liquid-crystalline medium
MERCK PATENT GMBH2 citations63
US5478496ADec 26, 1995
Media containing thiazole derivatives and thiadiazole derivatives and having a smectic liquid-crystalline phase
MERCK PATENT GMBH3 citations63
US5393459AFeb 28, 1995
Optically active compounds, and a liquid-crystalline phase
MERCK PATENT GMBH4 citations63
US5230827AJul 27, 1993
Derivatives of 2,3-difluorobenzoic acid
MERCK PATENT GMBH5 citations63
US5068389ANov 26, 1991
Tertiary alcohols
MERCK PATENT GMBH3 citations63
US5340497AAug 23, 1994
Fluorophenylpyrimidines
MERCK PATENT GMBH4 citations62
Showing the top 50 of 56 patents by PatentIndex Score.