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:
Jan. 11, 2005
Filed:
Apr. 17, 2003
Applicants:
Xiao-chang Charles LI, Union City, CA (US);
Kazunori Ueno, Kanagawa, JP;
Akihito Saitoh, Kanagawa, JP;
Hiroshi Tanabe, Kanagawa, JP;
Tadashi Okamoto, Kanagawa, JP;
Inventors:
Xiao-Chang Charles Li, Union City, CA (US);
Kazunori Ueno, Kanagawa, JP;
Akihito Saitoh, Kanagawa, JP;
Hiroshi Tanabe, Kanagawa, JP;
Tadashi Okamoto, Kanagawa, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 3314 ;
U.S. Cl.
CPC ...
Abstract
An organic light-emitting device (OLED) in which pyrylium salt or its derivative, such as thiapyrylium, selenapyrylium, or telluropyrylium, is used as a charge transport material and/or at least a dopant or principal component in a charge transport layers.