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:
Jan. 07, 2014
Filed:
Feb. 13, 2009
Norimasa Yokoyama, Tsukuba, JP;
Shuichi Hayashi, Tsukuba, JP;
Sawa Izumi, Tsukuba, JP;
Shigeru Kusano, Tsukuba, JP;
Norimasa Yokoyama, Tsukuba, JP;
Shuichi Hayashi, Tsukuba, JP;
Sawa Izumi, Tsukuba, JP;
Shigeru Kusano, Tsukuba, JP;
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Abstract
Objects of the invention are to provide an organic compound having excellent properties, which is excellent in eleclron-injecting/transporling performance, has hole-blocking ability, and is highly stable in a thin-film state, as a material for an organic electroluminescent devices having a high-efficiency and a high durability; and to provide an organic electroluminescent device having a high-efficiency and a high durability using the compound. The invention relates to: a compound having a pyridoindolc ring structure bonded with a substituted pyridyl group and an organic electroluminescent device comprising a pair of electrodes and at least one organic layer interposed between the electrodes.