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:
Apr. 26, 2005
Filed:
Jul. 09, 2002
Applicants:
Chin-ti Chen, Taipei, TW;
Hsiu-chih Yeh, Sanchung, TW;
Wei-ching Wu, Taipei County, TW;
Li-hsin Chan, Yangmei, TW;
Inventors:
Chin-Ti Chen, Taipei, TW;
Hsiu-Chih Yeh, Sanchung, TW;
Wei-Ching Wu, Taipei County, TW;
Li-Hsin Chan, Yangmei, TW;
Assignee:
Academia Sinica, Taipei, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B033/14 ;
U.S. Cl.
CPC ...
Abstract
This invention features a compound having the formula:X is O or NR; and each of Y and Z, independently, isin which each of R, R, R, and R, independently, is alkyl, cyclyl, heterocyclyl, aralkyl, aryl, or heteroaryl; Aris aralkyl, aryl, or heteroaryl; and Aris cyclyl, heterocyclyl, aralkyl, aryl, or heteroaryl; or Arand Artaken together is heterocyclyl, aralkyl, or heteroaryl. This compound can be used as a red light emitting material in an electro-luminescence device.