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. 19, 2012
Filed:
May. 13, 2011
Youhei Ono, Chiba, JP;
Hiroshi Yamada, Chiba, JP;
Akiko Kageyama, Chiba, JP;
Manabu Uchida, Chiba, JP;
Youhei Ono, Chiba, JP;
Hiroshi Yamada, Chiba, JP;
Akiko Kageyama, Chiba, JP;
Manabu Uchida, Chiba, JP;
JNC Corporation, Tokyo, JP;
Abstract
A compound represented by the following Formula (1) is useful as an electron transport material of an organic EL device, and an organic EL device comprising the compound in the electron transport layer is long in life, and low in drive voltage: wherein G is an n-valent link, n is an integer of 2 to 4; Rto Rare each independently hydrogen, a monovalent group, or a free valency bonded with G, and Rto Rare each independently hydrogen or a monovalent group, and one of Rto Ris a free valency bonded with G; and n groups of 2,3'-bipyridyl may be the same or different with each other.