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:
Oct. 22, 2024
Filed:
Jan. 17, 2020
Applicant:
Basf SE, Ludwigshafen am Rhein, DE;
Inventors:
Leonhard Feiler, Basel, CH;
Thomas Ruch, Basel, CH;
Frank Bachmann, Basel, CH;
Marie-Pascale Perritaz, Basel, CH;
Gerardus De Keyzer, Basel, CH;
Assignee:
BASF SE, Ludwigshafen am Rhein, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B 31/053 (2006.01); C09B 31/043 (2006.01); C09B 31/26 (2006.01); C09B 31/30 (2006.01); C09K 19/60 (2006.01);
U.S. Cl.
CPC ...
C09B 31/053 (2013.01); C09B 31/043 (2013.01); C09B 31/26 (2013.01); C09B 31/30 (2013.01); C09K 19/601 (2013.01);
Abstract
Azo-azomethine dyes, a dichroic dye mixture including azo-azomethine dyes, a liquid crystal composition with the azo-azomethine dyes, and methods for producing the dyes and dye compositions. The dyes can be used in liquid crystal systems, transmissive displays, and smart windows.