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:
Feb. 04, 2014
Filed:
Feb. 25, 2009
Norimasa Yokoyama, Tsukuba, JP;
Shuichi Hayashi, Tsukuba, JP;
Makoto Nagaoka, Tsukuba, JP;
Yoshio Taniguchi, Ueda, JP;
Musubu Ichikawa, Ueda, JP;
Norimasa Yokoyama, Tsukuba, JP;
Shuichi Hayashi, Tsukuba, JP;
Makoto Nagaoka, Tsukuba, JP;
Yoshio Taniguchi, Ueda, JP;
Musubu Ichikawa, Ueda, JP;
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Shinshu University, National University Corporation, Matsumoto, JP;
Abstract
The invention provides an organic compound which shows an excellent electron-injecting/transporting performance, has a hole-blocking ability and shows a high stability as a film, that is, having excellent characteristics as a material for organic electroluminescent device having high efficiency and high durability; and provides an organic EL device comprising the compound and having high efficiency and high durability. The organic compound being a substituted bipyridyl compound represented by the general formula (1);