The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 2005
Filed:
Jun. 20, 2001
Manabu Uchida, Yokohama, JP;
Guofang Wang, Yokohama, JP;
Takaharu Nakano, Yokohama, JP;
Kenji Furukawa, Yokohama, JP;
Keiji Okada, Yokohama, JP;
Masatoshi Kozaki, Yokohama, JP;
Manabu Uchida, Yokohama, JP;
Guofang Wang, Yokohama, JP;
Takaharu Nakano, Yokohama, JP;
Kenji Furukawa, Yokohama, JP;
Keiji Okada, Yokohama, JP;
Masatoshi Kozaki, Yokohama, JP;
Chisso Corporation, Osaka, JP;
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), Rto Reach 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, Xand Xeach represents independently an oxygen atom or a sulfur atom, and Yand Yeach represents independently a substituted or not-substituted alkyl group of 1 to 6 carbon atoms, an aryl group or a heterocyclic group).