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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.:

US 12256638 B1

PDFFull Text
Date of Patent:
Mar. 18, 2025

Filed:

Nov. 29, 2019

Photoactive compound

Applicant:

Sumitomo Chemical Co., Ltd., Tokyo, JP;

Inventor:

Kiran Kamtekar, Godmanchester, GB;

Assignee:

Sumitomo Chemical Co., Ltd., Tokyo, JP;

Attorney:

Wolf, Greenfield & Sacks, P.C.

Primary Examiner:

Robert D Harlan

Int. Cl.
CPC ...
H01L 51/00 (2006.01); C07D 495/04 (2006.01); G01N 21/64 (2006.01); H10K 85/60 (2023.01); H10K 30/30 (2023.01); H10K 71/15 (2023.01); H10K 71/40 (2023.01);
U.S. Cl.
CPC ...
H10K 85/6576 (2023.02); C07D 495/04 (2013.01); G01N 21/645 (2013.01); H10K 85/6572 (2023.02); H10K 30/30 (2023.02); H10K 71/15 (2023.02); H10K 71/441 (2023.02);
Abstract

A compound of formula (I): EAG-EDG-EAG (I) wherein EDG is an electron-donating group comprising a polycyclic heteroaromatic group and each EAG is an electron-accepting group of formula (II): (II) wherein Rin each occurrence is H or a substituent; --- is a bond to EDG; and each X-Xis independently CRor N wherein Rin each occurrence is H or a substituent, with the proviso that at least one occurrence of at least one of X-Xis N. The compound may be used as an acceptor in a bulk heterojunction layer of an organic photodetector.

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Kamtekar, Kiran. (2025). Photoactive compound (U.S. Patent No. 12256638). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12256638

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