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:
Jun. 07, 2005
Filed:
Nov. 26, 2002
Applicant:
Jian Ping Chen, Palo Alto, CA (US);
Inventor:
Jian Ping Chen, Palo Alto, CA (US);
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B033/00 ; C09K011/00 ;
U.S. Cl.
CPC ...
Abstract
An organic light-emitting device (OLED) in which an azulene based compound is used as an emissive layer and/or one or more charge transport layers, or as a host material, or is doped into a functional layer of an OLED to improve device efficiency.