Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From sulfur-containing reactant
Reexamination Certificate
2007-04-24
2007-04-24
Truong, Duc (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From sulfur-containing reactant
C528S391000, C528S397000, C528S423000, C528S425000, C528S486000, C428S690000, C428S917000
Reexamination Certificate
active
10386710
ABSTRACT:
Provided is a polymer compound having a polystyrene reduced number average molecular weight of 103-108, and comprising a repeating unit represented by the below formula (1-1) or (1-2),wherein Ring A, Ring B, Ring C, or Ring D each independently represent an aromatic ring, and X represents S or O. The compound is usable as a light-emitting material, a charge transporting material, etc.
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Kitano Makoto
Oguma Jun
Sekine Chizu
Tsubata Yoshiaki
Ueoka Takahiro
Sumitomo Chemical Company Limited
Truong Duc
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