US PATENT SUBCLASS 349 / 165
.~.~.~ Pleochroic dye

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

56  DF  PARTICULAR STRUCTURE {7}
84  DF  .~ Having significant detail of cell structure only {17}
163  DF  .~.~ Nonchiral additive in the liquid crystal material {3}
165.~.~.~ Pleochroic dye

DEFINITION

Classification: 349/165

Pleochroic dye:

(under subclass 163) Subject matter wherein a pleochroic dye is added to the liquid crystal for controlling the absorption of light.

(1) Note. Dichroic dyes are classified here.