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. 01, 2016
Filed:
Oct. 07, 2011
Applicants:
Hirokatsu Ito, Sodegaura, JP;
Masahiro Kawamura, Sodegaura, JP;
Yuichiro Kawamura, Sodegaura, JP;
Yumiko Mizuki, Sodegaura, JP;
Hiroyuki Saito, Sodegaura, JP;
Inventors:
Hirokatsu Ito, Sodegaura, JP;
Masahiro Kawamura, Sodegaura, JP;
Yuichiro Kawamura, Sodegaura, JP;
Yumiko Mizuki, Sodegaura, JP;
Hiroyuki Saito, Sodegaura, JP;
Assignee:
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/54 (2006.01); C07D 471/04 (2006.01); C07D 401/04 (2006.01); C07D 213/22 (2006.01); C09K 11/06 (2006.01); H01L 51/00 (2006.01); H05B 33/20 (2006.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
C07D 213/22 (2013.01); C07D 401/04 (2013.01); C07D 471/04 (2013.01); C09K 11/06 (2013.01); H01L 51/0055 (2013.01); H01L 51/0067 (2013.01); H01L 51/0072 (2013.01); H05B 33/20 (2013.01); H01L 51/5048 (2013.01);
Abstract
A benzo[k]fluoranthene derivative represented by the following formula (1): wherein Rto Rare as defined in the specification. The benzo[k]fluoranthene derivative represented by the formula (1) reduces a driving voltage of an organic electroluminescence device and makes it possible to realize light emission with high efficiency and long lifetime.