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.:
Date of Patent:
Apr. 03, 2012
Filed:
Dec. 29, 2006
Applicants:
Rudolf Eidenschink, Mainz, DE;
Holger Kretzschmann, Ruemmelsheim, DE;
Inventors:
Rudolf Eidenschink, Mainz, DE;
Holger Kretzschmann, Ruemmelsheim, DE;
Assignee:
Merck Patent Gesellschaft MIT Beschraenkter Haftung, Darmstadt, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 69/75 (2006.01); C07C 41/00 (2006.01); C09K 19/52 (2006.01); C09K 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to tricyclic aromatics of the general formula I in which A, A, A, A, Q-Q, R, R, X, X, X, Z, Z, Z, Z, q, r, s, t and u have the meaning indicated, and to the use thereof as components of liquid-crystalline media and to an electro-optical display element containing same.