US 6,808,764 B2Granted

Liquid-crystalline medium having a high birefringence and improved UV stability

AssigneeMerck Patent GmbH

InventorsMichael Heckmeier, Volker Reiffenrath

Life of this patent

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Abstract

A liquid-crystalline medium comprises the compound of the formula (I): generally in amounts from 1 to 30% by weight, preferably from 2 to 20% by weight, particularly preferably from 3 to 10% by weight, and further liquid-crystalline compounds.

Claims23

Dependent claims

Liquid-crystalline medium comprising the compound of the formula (I):

Dependencies are inferred from the claim text.

Facts

Application: 10/358,400Filed 5 Feb 2003
Priority: DE 102 04 6075 Feb 2002
Published: US 2003/0228426 A111 Dec 2003
Granted: 26 Oct 2004
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

C09K 19/12
Containing at least two benzene rings: at least two benzene rings directly linked, e.g. biphenyls
C09K 19/44
Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40: containing compounds with benzene rings…
C09K 19/46
Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40: containing esters
C09K 2019/0466
Characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group: the…

Family

US 2003/0228426 A1Pre-grant publication · published 11 Dec 2003
US 6,808,764 B2This patent

From the US filing history. Foreign family members aren’t listed.

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