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:
May. 06, 2025
Filed:
Jun. 26, 2020
Applicant:
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Inventors:
Ryoutarou Morita, Tokyo, JP;
Noriaki Mochizuki, Tokyo, JP;
Assignee:
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/30 (2005.12); C09B 57/02 (2005.12); C09B 67/02 (2005.12); C09K 11/06 (2005.12); G02F 1/13357 (2005.12);
U.S. Cl.
CPC ...
G02B 5/3075 (2012.12); C09B 57/02 (2012.12); C09B 67/0097 (2012.12); C09K 11/06 (2012.12); G02F 1/13362 (2012.12);
Abstract
This polarized light-emitting film contains a water-soluble coumarin compound represented by formula (1) (in formula (1), A represents an optionally substituted coumarin skeleton, X represents a sulfo group or a carboxyl group, and n represents an integer of 1 to 3.) or a salt thereof.