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:
Jun. 08, 2010
Filed:
Dec. 22, 2005
Sachiko Kawakami, Kanagawa, JP;
Harue Nakashima, Kanagawa, JP;
Kumi Kojima, Tokyo, JP;
Ryoji Nomura, Kanagawa, JP;
Nobuharu Ohsawa, Kanagawa, JP;
Sachiko Kawakami, Kanagawa, JP;
Harue Nakashima, Kanagawa, JP;
Kumi Kojima, Tokyo, JP;
Ryoji Nomura, Kanagawa, JP;
Nobuharu Ohsawa, Kanagawa, JP;
Abstract
It is an object of the present invention to provide a light-emitting substance which is resistant to repetition of an oxidation reaction. It is another object of the invention to provide a light-emitting element which is resistant to repetition of a reduction reaction. An aspect of the present invention is an anthracene derivative represented by a general formula (1). In the general formula (1), R1 represents hydrogen or an alkyl group having 1 to 4 carbon atoms; R2 represents any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 12 carbon atoms, which may have a substituent or no substituent; Ph1 represents a phenyl group, which may have a substituent or no substituent; and X1 represents an arylene group having 6 to 15 carbon atoms.