US PATENT SUBCLASS 252 / 299.6
.~ Containing nonsteryl liquid crystalline compound of specified structure

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


252 /   HD   COMPOSITIONS

299.01  DF  LIQUID CRYSTAL COMPOSITIONS {7}
299.6.~ Containing nonsteryl liquid crystalline compound of specified structure {7}
299.61  DF  .~.~> Including heterocyclic ring
299.62  DF  .~.~> Including fused or bridged rings
299.63  DF  .~.~> Including fully saturated ring
299.64  DF  .~.~> Aryl ester of aryl acid having three benzene rings {1}
299.66  DF  .~.~> Benzene rings linked by direct bond
299.67  DF  .~.~> Phenyl benzoate derivative
299.68  DF  .~.~> Including benzene rings bonded through azo, azoxy, or azomethine linkage

DEFINITION

Classification: 252/299.6

Containing nonsteryl liquid crystalline compound of specified structure:

(under subclass 299.01) Compositions containing a liquid crystal compound of specified chemical structure for which a definite structural formula can be drawn and which does not contain the cyclopentanophenanthren neucleus, i.e., [figure]

(1) Note. A polymer which is not of a single molecular species and is identifiable as an average of various molecular species is excluded herefrom. A polymer which is a single molecular species, e.g., dimer, etc., is included hereunder. The recitation "polymer" will be presumed to be material of no single molecular species in the absence of specific contrary disclosure.