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:
Jul. 10, 2007
Filed:
Aug. 12, 2003
Koichi Suzuki, Kanagawa, JP;
Mizuho Hiraoka, Kanagawa, JP;
Akihiro Senoo, Kanagawa, JP;
Naoki Yamada, Tokyo, JP;
Chika Negishi, Kanagawa, JP;
Akihito Saitoh, Kanagawa, JP;
Daisaku Tanaka, Yamagata, JP;
Ryoji Yashiro, Fukui, JP;
Koichi Suzuki, Kanagawa, JP;
Mizuho Hiraoka, Kanagawa, JP;
Akihiro Senoo, Kanagawa, JP;
Naoki Yamada, Tokyo, JP;
Chika Negishi, Kanagawa, JP;
Akihito Saitoh, Kanagawa, JP;
Daisaku Tanaka, Yamagata, JP;
Ryoji Yashiro, Fukui, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A fluorene compound represented by the following general formula [I]: is used to provide an organic luminescent device. Such a device has an optical output exhibiting a high luminance with an extremely high efficiency, and has an extremely high durability.