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. 04, 2015
Filed:
Jan. 23, 2013
Jnc Corporation, Tokyo, JP;
Guofang Wang, Chiba, JP;
Akiko Kageyama, Chiba, JP;
Toshihiro Koike, Chiba, JP;
Manabu Uchida, Chiba, JP;
JNC CORPORATION, Tokyo, JP;
Abstract
Disclosed are benzofluorene compounds of formula (1) exhibiting excellent performance when applied to an organic electroluminescent device, wherein Arand Arare aryl which may be substituted; Rand Reach are independently hydrogen, alkyl which may be substituted, cycloalkyl which may be substituted or aryl which may be substituted, and at least one of Rand Ris aryl which may be substituted; and the substituents in Ar, Ar, Rand Reach are independently selected from the group consisting of alkyl having 1 to 24 carbon atoms, cycloalkyl having 3 to 12 carbon atoms and aryl having 6 to 30 carbon atoms.