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. 06, 2006
Filed:
Aug. 11, 2003
Hyoyoung Lee, Taejon, KR;
Jiyoung OH, Taejon, KR;
Hye Yong Chu, Taejon, JP;
Jeong Ik Lee, Kyunggi-do, KR;
Seong Hyun Kim, Taejon, KR;
Lee-mi DO, Taejon, KR;
Taehyoung Zyung, Taejon, KR;
Hyoyoung Lee, Taejon, KR;
Jiyoung Oh, Taejon, KR;
Hye Yong Chu, Taejon, JP;
Jeong Ik Lee, Kyunggi-do, KR;
Seong Hyun Kim, Taejon, KR;
Lee-Mi Do, Taejon, KR;
Taehyoung Zyung, Taejon, KR;
Abstract
Provided are bisphenylene-spirobifluorene compounds, a method for synthesizing the same, and EL material and device having the same. The bisphenylene-spirobifluorene compound is defined by the following formula: wherein Rand Rare identical or different and are independently a straight-chain or branched alkyl group having from 1 to 22 carbon atoms, Xand Xindependently contains one or more elements selected from the group consisting of C, O, N, S, Si and Ge, and m and n are integers from 1 to 4.