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:
Nov. 24, 2015
Filed:
Jul. 29, 2011
Norimasa Yokoyama, Tokyo, JP;
Makoto Nagaoka, Tsukuba, JP;
Kazunori Togashi, Tokyo, JP;
Kouki Kase, Tsukuba, JP;
Eiji Takahashi, Tsukuba, JP;
Norimasa Yokoyama, Tokyo, JP;
Makoto Nagaoka, Tsukuba, JP;
Kazunori Togashi, Tokyo, JP;
Kouki Kase, Tsukuba, JP;
Eiji Takahashi, Tsukuba, JP;
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Abstract
An organic compound with excellent characteristics excelling in hole-injecting/transporting performance and having electron blocking ability, high stability in a thin-film state and high luminous efficiency is provided as material for an organic electroluminescent device. The compound of a general formula () having an indenocarbazole ring structure is used as a constituent material of at least one organic layer in the organic electroluminescent device that includes a pair of electrodes and one or more organic layers sandwiched between the pair of electrodes.