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. 20, 2024
Filed:
Jun. 01, 2021
Applicant:
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Inventors:
Kohei Ohtani, Tokyo, JP;
Hitomi Muto, Tokyo, JP;
Saori Suzuki, Tokyo, JP;
Takashi Yoshimoto, Tokyo, JP;
Assignee:
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1333 (2006.01); C09B 1/58 (2006.01); C09K 19/60 (2006.01); G02F 1/137 (2006.01);
U.S. Cl.
CPC ...
C09B 1/585 (2013.01); C09K 19/603 (2013.01); G02F 1/13737 (2013.01); G02F 2202/043 (2013.01);
Abstract
The present invention relates to an anthraquinone compound represented by formula (1) (in formula (1), R1 represents a C1-9 alkyl group and R2 represents a C1-8 alkyl group): a yellow dichroic pigment that includes this compound; a liquid crystal composition for light control that contains this yellow dichroic pigment and a liquid crystal material; and a light control element that uses this composition.