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:
Feb. 17, 2026
Filed:
Feb. 19, 2021
Applicant:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Inventors:
Yuki Nakano, Sodegaura, JP;
Ryota Takahashi, Sodegaura, JP;
Yoshinao Shirasaki, Sodegaura, JP;
Yu Kudo, Sodegaura, JP;
Assignee:
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 487/22 (2006.01); H01L 51/54 (2006.01); H10K 85/60 (2023.01); H10K 50/11 (2023.01);
U.S. Cl.
CPC ...
C07D 487/22 (2013.01); H10K 85/631 (2023.02); H10K 85/636 (2023.02); H10K 85/6572 (2023.02); H10K 50/11 (2023.02);
Abstract
A compound represented by the following formula (1), wherein at least one of Rto Ris a substituted or unsubstituted biphenyl-2-yl group; and at least one of Rto Rhas a specific substituent.
Nakano, Yuki. (2026). Compound and organic electroluminescent element (U.S. Patent No. 12552805). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12552805
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile