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:
Apr. 04, 2023
Filed:
May. 01, 2020
Applicant:
Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;
Inventors:
Assignee:
IDEMITSU KOSAN CO., LTD., Chiyoda-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C 211/61 (2006.01); C07D 307/91 (2006.01); H01L 51/00 (2006.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
C07D 307/91 (2013.01); H01L 51/006 (2013.01); H01L 51/0073 (2013.01); H01L 51/5024 (2013.01); H01L 51/5056 (2013.01);
Abstract
A compound represented by formula (A): wherein Ar, Rto R, Rto R, Rto R, Rto R, *1, and Rto Rare as defined in the description provides organic electroluminescence devices with improved device performance.