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. 20, 2002
Filed:
Feb. 22, 1999
Applicant:
Inventors:
Tadahisa Sato, Kanagawa, JP;
Shintaro Hara, Osaka, JP;
Akira Gyoutoku, Osaka, JP;
Hideaki Iwanaga, Osaka, JP;
Takahiro Komatsu, Osaka, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 3/312 ;
U.S. Cl.
CPC ...
H05B 3/312 ;
Abstract
An organic electroluminescence element comprising a substrate having provided thereon an anode for injecting holes, a cathode for injecting electrons, and at least one organic compound layer therebetween, wherein the organic compound layer contains at least one compound represented by formula (I), and at least one compound represented by formula (II), (III) or (IV) (definitions of formulas (I) to (IV) are described in the specification).