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. 07, 2017
Filed:
Oct. 26, 2012
Jnc Corporation, Tokyo, JP;
Akiko Kageyama, Chiba, JP;
JNC CORPORATION, Tokyo, JP;
Abstract
The present invention is capable of providing a light emitting device with excellent device lifetime while maintaining low driving voltage and good color purity by using a benzofluorene compound which is substituted with a diaryl amino group having a naphthyl and a phenyl or a heteroaryl and which is represented by general formula (1) as a material for luminescent layers of an organic electroluminescent device, for example. (In the formula, Ar is a phenyl, a heteroaryl, etc., Rand Rare fluorine or a substituted silyl, etc., n1 and n2 are an integer of 0-5, and Ris an alkyl, etc.)
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile