Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2004-01-20
2009-12-22
Seidleck, James (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C428S473500, C428S001100, C428S001200, C528S332000, C528S424000, C528S353000, C528S125000
Reexamination Certificate
active
07635746
ABSTRACT:
Diamine compound containing specific triazine group, polyamic acid obtained by reacting the diamine compound and tetracarboxylic dianhydride, and liquid crystal alignment film obtained by coating and imidizing the polyamic acid. The liquid crystal alignment film has good heat-resistance, high transparency in visible light region and improved voltage holding ratio. Also, pretilt angle is easily controlled over broad range.
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Kim Chul Hee
Kwon O Bum
Lee Bum Jin
Lee Moo Young
Oh Jae Min
Cheil Industries Inc.
Clark Paul T.
Clark & Elbing LLP
Listvoyb Gregory
Seidleck James
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