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:
Aug. 08, 2006
Filed:
Apr. 13, 2005
Mari Ichimura, Kanagawa, JP;
Tadashi Ishibashi, Kanagawa, JP;
Shinichiro Tamura, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A bis(aminostyryl)naphthalene compound represented by the general formula [I] or the like below. (where Rand Reach denotes an unsubstituted aryl group; Rand Reach denotes an aryl group having a specific substituent such as methoxy group; and Rand Reach denotes a cyano group or the like.) A process for producing a bis(aminostyryl)naphthalene compound represented by the general formula [I] by condensation of, for example, 4-(N,N-diarylamino)benzaldehyde with diphosphonic ester or diphosphonium. The bis(aminostyryl)naphthalene compound emits intense yellow or red light. The process permits efficient production of the bis(aminostyryl)naphthalene compound.