US PATENT SUBCLASS 428 / 1.26
.~.~ Polyimide

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

1.1  DF  LIQUID CRYSTAL OPTICAL DISPLAY HAVING LAYER OF SPECIFIED COMPOSITION {5}
1.2  DF  .~ Alignment layer of specified composition {4}
1.26.~.~ Polyimide {2}
1.27  DF  .~.~.~> Polyimidfluoride
1.28  DF  .~.~.~> Polyimidmetalo

DEFINITION

Classification: 428/1.26

Polyimide:

(under subclass 1.2) Subject matter wherein the alignment layer is an organic polymer, or derivative, with structural units linked by imide grouping.