Liquid crystal composition containing an optically active...

Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified...

Reexamination Certificate

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C252S299010

Reexamination Certificate

active

07108895

ABSTRACT:
It is to provide a liquid crystal composition containing at least one type of optically active compounds of the following formulae (1) to (4), and a liquid crystal electro-optical element excellent in display quality. In each formula, C* is asymmetric carbon, and the respective symbols are as defined in descriptionin-line-formulae description="In-line Formulae" end="lead"?R1-A1-C*HX—Y-A2-(Z1-A3)m-C≡C-A4-(Z2-A5)n-R2  (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?R1-A1-C*HX1—Y1-A2-Z1-A3-Z2-A4-R2  (2)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?R5-Pn-C*HX2—CH2-A6-Y2-A7-R6  (3)in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
patent: 4754051 (1988-06-01), Sasaki et al.
patent: 5209867 (1993-05-01), Koden et al.
patent: 6551670 (2003-04-01), Tahara et al.
patent: 2002/0134966 (2002-09-01), Tahara et al.
patent: 217354 (1986-09-01), None
patent: 0 311 329 (1989-04-01), None
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patent: 5-170679 (1993-07-01), None
patent: 8-245960 (1996-09-01), None
patent: 10-251185 (1998-09-01), None
patent: 11-255675 (1999-09-01), None
patent: 2002-80413 (2002-03-01), None
patent: 95/14067 (1995-05-01), None
English translation by computer for JP 11-255675, http://www4.ipdl.ncipi.go.jp/Tokujitu/PAJdetail.ipdl?N0000=60&N0120=01&N2001=2&N3001=H11-255675.
English translation by computer for JP 10-251185, http:/www4.ipdl.ncipi.go.jp/Tokujitu/PAJdetail.ipdl?N0000=60&N0120=01&N2001=2N3001=H10-251185.
English abstract for JP-2002/080413, 1996.
English abstract for JP 08/245960, 2002.
Patent Abstracts of Japan, JP 01-316348, Dec. 21, 1989 (corr. US 5,209,867).
Patent Abstracts of Japan, JP 02-036152, Feb. 6, 1990 (corr. US 5,209,867).

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