Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified...
Reexamination Certificate
2005-04-12
2005-04-12
Wu, Shean C. (Department: 1756)
Stock material or miscellaneous articles
Liquid crystal optical display having layer of specified...
C252S299620, C252S299630, C252S299660, C252S299640, C252S299650, C252S299610
Reexamination Certificate
active
06878421
ABSTRACT:
The invention relates to a liquid crystalline medium, based on a mixture of polar compounds with a positive dielectric anisotropy. Said medium is characterised in that it contains one or more compounds of formula (I) wherein R, A1, A2, Z1, Z2, X1, X2, n and o are defined as per claim1.
REFERENCES:
patent: 4601547 (1986-07-01), Shingu
patent: 5744058 (1998-04-01), Reiffenrath et al.
patent: 4303634 (1994-08-01), None
patent: 4409526 (1995-09-01), None
patent: 19520246 (1995-12-01), None
patent: 62-181247 (1987-08-01), None
patent: 62-195355 (1987-08-01), None
patent: 6-263663 (1994-09-01), None
English translation by computer for JP 6-263663, http://www4.ipdl.jpo.go.jp/Tokujitu/PAJdetail.ipdl?N0000=60&N0120=01&N2001=2&N3001=H06-263663.*
English abstract for JP 62-181247, 1987.*
English abstract for JP 62-195355, 1987.*
Database WPI, Section Ch. Week 199442, Derwent Publications Ltd., London, GB; Class E14, AN 1994-338220, XP002188660 & JP 06 263663 A (Asahi Glass Co Ltd), Sep. 20, 1994, Summary.
Database WPI, Section Ch, Week 198737, Derwent Publication Ltd., London, GB; Class E14, AN 1987-260922, XP002188661 & JP 62 181247 A (Asahi Glass Co Ltd), Aug. 8, 1987, Summary.
Database WPI, Section Ch, Week 198740, Derwent Publication Ltd., London, GB; Class E14, AN 1987-280990, XP002188662 & JP 62 195355 A (Asahi Glass Co Ltd), Aug. 28, 1987, Summary.
Bremer Matthias
Engel Martin
Heckmeier Michael
Pauluth Detlef
Schuler Brigitte
Merck Patent GmbH
Millen White Zelano & Branigan P.C.
Wu Shean C.
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