The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7270856 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 18, 2007

Filed:

Nov. 05, 2003
Applicants:

Andreas Taugerbeck, Darmstadt, DE;

Michael Heckmeier, Hemsbach, DE;

Peer Kirsch, Kanagawa, JP;

Georg Luessem, Petershausen, DE;

Eike Poetsch, Muehltal, DE;

Inventors:

Andreas Taugerbeck, Darmstadt, DE;

Michael Heckmeier, Hemsbach, DE;

Peer Kirsch, Kanagawa, JP;

Georg Luessem, Petershausen, DE;

Eike Poetsch, Muehltal, DE;

Assignee:

Merck Patent GmbH, Darmstadt, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 19/30 (2006.01); C09K 19/34 (2006.01); C09K 19/32 (2006.01); C07D 319/06 (2006.01); C07D 309/02 (2006.01); C07C 43/192 (2006.01); C07C 25/13 (2006.01);
U.S. Cl.
CPC ...
Abstract

The invention relates to novel cyclobutane derivatives of the formula (I), in which R, R, A, Z, m, n and o have the meaning indicated in claim, to the use thereof as components of liquid-crystalline media, and to liquid-crystal and electro-optical display elements which contain the liquid-crystalline media according to the invention


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