US PATENT SUBCLASS 252 / 299.64
.~.~ Aryl ester of aryl acid having three benzene rings

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

299.01  DF  LIQUID CRYSTAL COMPOSITIONS {7}
299.6  DF  .~ Containing nonsteryl liquid crystalline compound of specified structure {7}
299.64.~.~ Aryl ester of aryl acid having three benzene rings {1}
299.65  DF  .~.~.~> Benzene rings linked by direct bond

DEFINITION

Classification: 252/299.64

Aryl ester of aryl acid having three benzene rings:

(under subclass 299.6) Compositions wherein the liquid crystal compound has an acid containing a benzene ring which is attached through its acid function to the radical derived by the removal of -OH from an alcohol containing a benzene ring. The compound must also contain three or more benzene rings.