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:
Dec. 10, 1991
Filed:
Sep. 07, 1989
Applicant:
Inventors:
Wolfgang Schrott, Ludwigshafen, DE;
Karin H Beck, Ludwigshafen, DE;
Karl-Heinz Etzbach, Frankenthal, DE;
Peter Neumann, Mannheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ;
U.S. Cl.
CPC ...
2522991 ; 25229901 ;
Abstract
A liquid-crystalline mixture contains a liquid crystal composition and an azulenesquaric acid dye of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 each have defined meanings, and is used for fabricating liquid crystal displays.
Quick Actions:
Schrott, Wolfgang. (1991). Liquid-crystalline mixture containing an azulenesquaric acid dye (U.S. Patent No. 5071588). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5071588
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile