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:
Jul. 08, 2008
Filed:
Jun. 28, 2007
Applicants:
Masato Ueda, Tsukuba, JP;
Takanobu Noguchi, Tsukuba, JP;
Inventors:
Masato Ueda, Tsukuba, JP;
Takanobu Noguchi, Tsukuba, JP;
Assignee:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided is a polymeric fluorescent substance showing fluorescence in solid state, which has a specific carrier drift mobility, a specific repeating unit, and specific number-average molecular weight. The polymeric fluorescent substance is excellent in solubility to organic solvents, and has higher efficiency and longer lifetime in applying as a polymer LED.