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:
Feb. 07, 2006
Filed:
Aug. 14, 2001
Applicants:
Takanobu Noguchi, Tsukuba, JP;
Masato Ueda, Tsukuba, JP;
Masamitsu Ishitobi, Tsukuba, JP;
Inventors:
Assignee:
Sumitomo Chemical Company, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 33/14 (2006.01); C09K 11/06 (2006.01); C08G 61/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A polymeric fluorescent substance exhibiting strong visible fluorescence in solid state. The substance has a polystyrene reduced number-average molecular weight of 1×10to 1×10, and contains repeating units represented by formula (1),—Ar—(CR═CR)—  (1)in the formula, Arrepresents an arylene group having a specific substituent. By using the polymeric fluorescent substance, a high performance polymer LED can be prepared easily.