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:
Oct. 13, 1998
Filed:
Jan. 30, 1996
Applicant:
Inventors:
Toshihiro Ohnishi, Tsukuba, JP;
Takanobu Noguchi, Tsukuba, JP;
Shuji Doi, Tsukuba, JP;
Makiko Ohshima, Kamakura, JP;
Assignee:
Sumitomo Chemical Company, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
H05B / ; H05B / ; C08G / ;
U.S. Cl.
CPC ...
428690 ; 313504 ; 25230116 ; 428691 ; 428917 ;
Abstract
Disclosed in this specification is a polymeric fluorescent substance which emits a fluorescence in a solid state, contains at least one kind of repeating unit represented by the following formula (1) with the amount of the formula (1) repeating units being at least 50 mole % based on the total repeating units, and has a polystyrene-reduced number-average molecular weight of 10.sup.3 -10.sup.7, characterized in that it has a monofunctional group represented by the following formula (2) at at least one terminal of the molecule: