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:
Mar. 17, 1998
Filed:
Oct. 25, 1990
Applicant:
Inventors:
Michael Schmitt, Weinheim, DE;
Wolfgang Schrott, Lugwigshafen, DE;
Peter Neumann, Mannheim, DE;
Sibylle Brosius, Ludwigshafen, DE;
Klaus Dieter Schomann, Ludwigshafen, DE;
Harald Kuppelmaier, Goennheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560221 ; 560128 ; 560103 ;
Abstract
Carbonyloxy-substituted azulenesquaric acid dyes of the formula ##STR1## where L is C.sub.1 -C.sub.12 -alkylene which may be substituted by phenyl,
Schmitt, Michael. (1998). Carbonyloxy-substituted azulenesquaric acid dyes, intermediates therefor (U.S. Patent No. 5728867). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5728867
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile