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:
Mar. 29, 2011
Filed:
Mar. 08, 2005
Fumie Sato, Fujisawa, JP;
Yuuki Takayama, Funabashi, JP;
Fumie Sato, Fujisawa, JP;
Yuuki Takayama, Funabashi, JP;
Fumie Sato, Fujisawa-Shi, JP;
Nissan Chemical Industries, Ltd., Tokyo, JP;
Abstract
A π-conjugated aromatic ring-containing compound represented by the formula (1) below is relatively stable and useful as a light-emitting material for light from blue-violet region to red region. [In the formula, R-Rindependently represent a hydrogen atom or the like; A and D independently represent a pyridine ring, pyrimidine ring, pyridazine ring, pyrazine ring, furan ring, pyrrole ring, pyrazole ring, imidazole ring, thiophene ring, benzothiadiazole ring, thieno[3,4-b]pyrazine ring, furo[3,4-b]pyrazine ring, 6H-pyrrolo[3,4-b]pyrazine ring or the like; a, aand aindependently represent 0 or 1; and nand nindependently represent an integer of 1-5.]