Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified...
Reexamination Certificate
2005-12-13
2005-12-13
Wu, Shean C. (Department: 1756)
Stock material or miscellaneous articles
Liquid crystal optical display having layer of specified...
C252S299610, C252S299630, C252S299670, C549S356000, C549S428000
Reexamination Certificate
active
06974607
ABSTRACT:
Tetrahydropyran derivatives having at least one ester group (—CO—O—) and at least one group —CN, —NCS,—F, —Cl, —OCHF2, —OCF3, —CF3, —OCHFCF3, —OCF2CHFCF3, SF5, or —OCF2CF3; a process for preparing said tetrahydropyran derivatives, and the use of said tetrahydropyran derivatives as a component in a liquid crystal composition.
REFERENCES:
patent: 5368771 (1994-11-01), Namekawa et al.
patent: 6329027 (2001-12-01), Kondo et al.
patent: 6541081 (2003-04-01), Bremer et al.
patent: 6558758 (2003-05-01), Yanai et al.
patent: 2004/0140452 (2004-07-01), Hirschmann et al.
patent: 4132006 (1993-04-01), None
Adlem Kevin
Binder Werner
Duffy Warren
Goulding Mark John
Hahn Alexander
Merck Patent GmbH
Millen White Zelano & Branigan P.C.
Wu Shean C.
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