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:
Aug. 04, 2009
Filed:
Jan. 29, 2007
Toshihiro Koike, Ichihara, JP;
Manabu Uchida, Ichihara, JP;
Makoto Satsuki, Okayama, JP;
Makoto Fujiwara, Okayama, JP;
Ayashi Noguchi, Okayama, JP;
Toshihiro Koike, Ichihara, JP;
Manabu Uchida, Ichihara, JP;
Makoto Satsuki, Okayama, JP;
Makoto Fujiwara, Okayama, JP;
Ayashi Noguchi, Okayama, JP;
Chisso Corporation, Osaka, JP;
Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo, Okayama, JP;
Abstract
Provided are an organic electroluminescent device having better performances in luminous efficiency, device life and driving voltage, a display unit equipped with the same and a lighting instrument equipped with the same. The organic electroluminescent device comprises an electron transport layer containing a specific arylamine-substituted coumarin compound.