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. 02, 2011
Filed:
Feb. 28, 2008
Kazumasa Nagao, Otsu, JP;
Tsuyoshi Tominaga, Otsu, JP;
Kazumasa Nagao, Otsu, JP;
Tsuyoshi Tominaga, Otsu, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
A light emitting device material comprises a pyrene compound represented by formula (1) below. Also disclosed is a light emitting device using such a material. (Rto Rmay be the same or different and are each selected from the group consisting of hydrogen, an alkyl group, a cycloalkyl group, a heterocyclic group, an alkoxy group, an alkylthio group, an aryl ether group, an aryl thioether group, an aryl group, a heteroaryl group, an amino group, a silyl group, —P(═O)RR, and a ring structure formed together with an adjacent substituent; Rand Rare each selected from an aryl group and a heteroaryl group; n is an integer of 1 to 2; and X is selected from the group consisting of a single bond, an arylene group and a heteroarylene group, provided that at least one of Rto Ris used to link to X.)