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. 04, 2005
Filed:
Nov. 14, 2002
Applicants:
Yu-tai Tao, Taipei, TW;
Chung-wen Ko, Taipei, TW;
Chang-hao Chuen, Taipei, TW;
Jing-wen Peng, Taipei, TW;
Inventors:
Yu-Tai Tao, Taipei, TW;
Chung-Wen Ko, Taipei, TW;
Chang-Hao Chuen, Taipei, TW;
Jing-Wen Peng, Taipei, TW;
Assignee:
Academia Sinica, Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 3314 ; C07D47114 ;
U.S. Cl.
CPC ...
Abstract
This invention features a dipyrazolo-pyridine compound of formula (I):each of R, R, R, and R, independently, is H, alkyl, alkenyl, cycloalkyl, aryl, or heteroaryl; and each of Rand R, independently, is aryl or heteroaryl, or Rand R, together with the N atom they are attached to, are heteroaryl. The dipyrazolo-pyridine compound can be used in an electro-luminescence device.