P

Inventor

BARTMANN EKKEHARD

DE52 patents
⚠️ This page may combine multiple inventors who share the name “BARTMANN EKKEHARD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MERCK PATENT GMBH

39 patents
US5384065AJan 24, 1995

Matrix liquid-crystal display

MERCK PATENT GMBH67 citations96
US5122295AJun 16, 1992

Matrix liquid crystal display

MERCK PATENT GMBH69 citations95
US5730904AMar 24, 1998

Partially fluroinated benzene derivatives, and liquid-crystalline medium

MERCK PATENT GMBH23 citations93
US5641429AJun 24, 1997

Fluorobenzene derivatives and liquid-crystalline medium

MERCK PATENT GMBH23 citations93
US5626793AMay 6, 1997

Liquid-crystalline compounds

MERCK PATENT GMBH33 citations93
US5589102ADec 31, 1996

Benzene derivatives, and liquid-crystalline medium

MERCK PATENT GMBH43 citations93
US5536442AJul 16, 1996

Fluorinated liquid crystal compounds and liquid crystal medium containing same

MERCK PATENT GMBH29 citations93
US5487845AJan 30, 1996

Fluorobenzene derivatives and liquid-crystalline medium

MERCK PATENT GMBH33 citations93
US5403512AApr 4, 1995

Vinyl compounds, and a liquid-crystalline medium

MERCK PATENT GMBH35 citations93
US5045229ASep 3, 1991

Difluoromethylene compounds

MERCK PATENT GMBH41 citations93
US5723682AMar 3, 1998

Difluorovinyl ethers

MERCK PATENT GMBH22 citations92
US5389289AFeb 14, 1995

Liquid-crystalline medium

MERCK PATENT GMBH25 citations92
US5378395AJan 3, 1995

Matrix liquid crystal display

MERCK PATENT GMBH20 citations92
US6159393ADec 12, 2000

Benzene derivatives and liquid-crystalline medium

MERCK PATENT GMBH18 citations84
US5679285AOct 21, 1997

Vinylene compounds and liquid-crystalline medium

MERCK PATENT GMBH18 citations84
US5643495AJul 1, 1997

1,2,2,2-tetrafluoroethyl ethers, and liquid-crystalline medium

MERCK PATENT GMBH18 citations84
US6905740B2Jun 14, 2005

Matrix liquid crystal display

MERCK PATENT GMBH7 citations74
US6562419B1May 13, 2003

Matrix liquid crystal display

MERCK PATENT GMBH6 citations74
US5837162ANov 17, 1998

Liquid-crystalline compounds

MERCK PATENT GMBH7 citations74
US5744060AApr 28, 1998

Liquid-crystalline medium

MERCK PATENT GMBH14 citations74
US5705095AJan 6, 1998

Partially fluorinated benzene derivatives

MERCK PATENT GMBH9 citations74
US5637672AJun 10, 1997

Polyimides for STN displays

MERCK PATENT GMBH11 citations74
US5571449ANov 5, 1996

Partially fluorinated benzene derivatives

MERCK PATENT GMBH10 citations74
US5519525AMay 21, 1996

Matrix liquid crystal display

MERCK PATENT GMBH10 citations74
US5458806AOct 17, 1995

Fluoromethyl ketones and liquid-crystalline media

MERCK PATENT GMBH8 citations74
US5422035AJun 6, 1995

Benzene derivatives, and liquid-crystalline medium

MERCK PATENT GMBH12 citations74
US5389292AFeb 14, 1995

Difluoromethyl compounds

MERCK PATENT GMBH8 citations74
US5262085ANov 16, 1993

Trifluoromethylene compounds

MERCK PATENT GMBH19 citations74
US5232624AAug 3, 1993

Chiral 1,2-difluorobenzene derivatives

MERCK PATENT GMBH7 citations74
US5230829AJul 27, 1993

Phenylcyclohexanes, and a liquid-crystalline medium

MERCK PATENT GMBH16 citations74
US5753142AMay 19, 1998

Nematic liquid-crystal composition for active matrix application

MERCK PATENT GMBH8 citations73
US5496499AMar 5, 1996

Biphenylethanes and liquid-crystalline phase

MERCK PATENT GMBH7 citations73
US7186447B2Mar 6, 2007

Matrix liquid crystal display

MERCK PATENT GMBH2 citations63
US5635107AJun 3, 1997

Fluorine-containing five-membered ring compounds, and a liquid-crystaline medium containing them

MERCK PATENT GMBH5 citations63
US5393459AFeb 28, 1995

Optically active compounds, and a liquid-crystalline phase

MERCK PATENT GMBH4 citations63
US5188759AFeb 23, 1993

Haloacetylene derivatives

MERCK PATENT GMBH5 citations63
US4980508ADec 25, 1990

Process for the preparation of 1,2-disulfone compounds

MERCK PATENT GMBH4 citations63
US7445818B2Nov 4, 2008

Matrix liquid crystal display

MERCK PATENT GMBH0 citations52
US6573404B2Jun 3, 2003

Method for producing ortho-alkylated benzoic acid derivatives

MERCK PATENT GMBH0 citations51

CIBA GEIGY CORP

4 patents
US5106718AApr 21, 1992

Positive photoresist composition containing alkali-soluble phenolic resin, photosensitive quinonediazide compound and sulfonyl containing compound

CIBA GEIGY CORP25 citations92
US4980268ADec 25, 1990

Negative photoresists of the polyimide type containing 1,2-disulfones

CIBA GEIGY CORP15 citations73
US5104768AApr 14, 1992

Positive photoresist composition containing radiation sensitive quinonediazide compound and completely esterified polyamic acid polymer

CIBA GEIGY CORP13 citations69
US5200293AApr 6, 1993

Photoresist composition containing specific amounts of a naphthoquinone diazide sulfonyl ester of tetrahydroxy diphenyl sulfide and a polyhydroxy compound

CIBA GEIGY CORP5 citations63

MERCK KGAA

3 patents
US6350904B1Feb 26, 2002

Method for producing ortho-alkylated benzoic acid derivatives

MERCK KGAA17 citations92
US6004479ADec 21, 1999

Matrix liquid crystal display

MERCK KGAA17 citations92
US6515143B2Feb 4, 2003

Method for producing ortho-alkylated benzoic acid derivatives

MERCK KGAA0 citations51

CIBA SC HOLDING AG

3 patents
US5985950ANov 16, 1999

Acid-curable binder systems containing 1,2 disulfones

CIBA SC HOLDING AG7 citations74
US5717003AFeb 10, 1998

Acid-curable binder systems containing 1,2-disulfones

CIBA SC HOLDING AG6 citations74
US6156815ADec 5, 2000

Acid-curable binder systems containing 1,2-disulfones

CIBA SC HOLDING AG6 citations63

MERCK PATENT GES MIT BESHRANKT

1 patent
US5562858AOct 8, 1996

Hexafluoropropyl ethers, and liquid-crystalline medium

MERCK PATENT GES MIT BESHRANKT27 citations92

Showing the top 50 of 52 patents by PatentIndex Score.