Cyclopenta[b]naphthalene derivatives

Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing

Reexamination Certificate

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Details

C570S129000, C570S130000, C570S131000, C570S183000, C570S187000, C570S188000, C549S369000, C549S428000

Reexamination Certificate

active

07612243

ABSTRACT:
The present invention relates to cyclopenta[b]naphthalene derivatives to the use thereof in liquid-crystalline or mesogenic media, to liquid-crystalline or mesogenic media comprising at least one of these cyclopenta[b]naphthalene derivatives, and to electro-optical display elements containing these liquid-crystalline or mesogenic media.

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patent: 7291366 (2007-11-01), Lietzau et al.
patent: 2003/0091756 (2003-05-01), Hornung et al.
patent: 2004/0150633 (2004-08-01), Heckmeier et al.
patent: 4434974 (1996-04-01), None
patent: 10217273 (2002-12-01), None
patent: 1223209 (2002-07-01), None
patent: WO 9846547 (1998-10-01), None
patent: WO 0246330 (2002-06-01), None
Chemical Abstracts, vol. 122, No. 16, 17. Apr. 1995 Columbus, Ohio, US; abstract No. 201408, Yokokoji, Osamu et al: “Fluorine-containing indane derivatives and liquid crystal compositions containing same” XP002248134 & JP 06263663 (Asahi Glass Co Ltd, Japan) Sep. 20, 1994.

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