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. 31, 2026
Filed:
May. 10, 2019
Applicant:
Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;
Inventors:
Assignee:
IDEMITSU KOSAN CO., LTD., Chiyoda-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D 307/91 (2006.01); H10K 50/15 (2023.01); H10K 85/60 (2023.01);
U.S. Cl.
CPC ...
C07D 307/91 (2013.01); H10K 85/615 (2023.02); H10K 85/636 (2023.02); H10K 85/6574 (2023.02); H10K 50/156 (2023.02); H10K 50/157 (2023.02);
Abstract
Provided is an organic electroluminescent element including a compound that is represented by formula (1) and having a more improved lifetime. In the formula, X, R-R, R-R, R-R, L, L, n, and Ar-Arare as defined in the description: