Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2006-04-04
2006-04-04
Wu, Shean C. (Department: 1756)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C252S299610, C428S001100, C570S144000
Reexamination Certificate
active
07022865
ABSTRACT:
A tetrahydropyran derivative comprising at least three cyclic rings and one aromatic endgroup of the formula Aa process for preparing said tetrahydropyran derivatives, and the use of said tetrahydropyran derivatives as a component in a liquid crystal composition.
REFERENCES:
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patent: 6329027 (2001-12-01), Kondo 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
English abstract of DE-4,132,006.
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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