US PATENT SUBCLASS 349 / 171
.~ Within smectic 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}
171.~ Within smectic phase {1}
172  DF  .~.~> Within chiral smectic phase (includes ferroelectric) {2}


DEFINITION

Classification: 349/171

Within smectic phase:

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