US PATENT SUBCLASS 349 / 177
.~ Within nematic phase

Current as of: June, 1999
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349 /   HD   LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS

167  DF  WITH SPECIFIED NONCHEMICAL CHARACTERISTIC OF LIQUID CRYSTAL MATERIAL {6}
177.~ Within nematic phase {2}
178  DF  .~.~> Negative dielectric anisotropy only
179  DF  .~.~> Twisted (or chiral) nematic or supertwisted nematic {2}

DEFINITION

Classification: 349/177

Within nematic phase:

(under subclass 167) Subject matter wherein the characteristic recited is that of a liquid crystal within the nematic mesophase.