Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2005-06-07
2005-06-07
Yamnitzky, Marie (Department: 1774)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C313S506000, C257S040000
Reexamination Certificate
active
06902832
ABSTRACT:
A charge transporting material, a light emitting material and an organic electroluminescent device having high efficiency using a specified diazapentacene derivative represented by the following general formula (1):(in the general formula (1), R1to R10each represents independently a hydrogen atom, a halogen atom, an alkyl group of 1 to 6 carbon atoms, an alkoxy group, a substituted or not-substituted amino group, an aryl group or a heterocyclic group, in which the substituted or not-substituted aryl group or heterocyclic group, when they are adjacent with each other, may be of a structure condensed to each other, X1and X2each represents independently an oxygen atom or a sulfur atom, and Y1and Y2each represents independently a substituted or not-substituted alkyl group of 1 to 6 carbon atoms, an aryl group or a heterocyclic group).
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Furukawa Kenji
Kozaki Masatoshi
Nakano Takaharu
Okada Keiji
Uchida Manabu
Chisso Corporation
Wenderoth , Lind & Ponack, L.L.P.
Yamnitzky Marie
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