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:
Jul. 12, 2022
Filed:
Jan. 21, 2020
Applicant:
Agc Inc., Chiyoda-ku, JP;
Inventors:
Shigeki Hattori, Tokyo, JP;
Satoshi Okada, Tokyo, JP;
Assignee:
AGC Inc., Chiyoda-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/20 (2006.01); G02B 5/28 (2006.01); C09B 23/16 (2006.01); G02B 5/22 (2006.01);
U.S. Cl.
CPC ...
C09B 23/166 (2013.01); G02B 5/208 (2013.01); G02B 5/223 (2013.01); G02B 5/281 (2013.01);
Abstract
A near infrared absorbing dye includes a croconium-based compound shown in formula (AI). In formula (AI), ring Z is either an optionally substituted 6-membered ring including no heteroatom or an optionally substituted 5-membered ring including 0 to 3 heteroatoms in the ring, Rand R, Rand R, and Rand a carbon atom or heteroatom as a part of ring Z may be linked to each other to respectively form a heteroring A, a heteroring B, and a heteroring C together with a nitrogen atom.