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:
Jun. 04, 1991
Filed:
Feb. 23, 1989
Applicant:
Inventors:
Dieter Barfurth, Troisdorf-Spich, DE;
Claus Lindzus, Cologne, DE;
Heinz Nestler, Troisdorf-Eschmar, DE;
Assignee:
Huels Troisdorf Aktiengesellschaft, Troisdorf, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
556 55 ; 106 20 ;
Abstract
Zirconium(IV) chelates with citric acid ester radicals and optionally with alkoxy groups are prepared from tetraalkoxy zirconate and a citric acid ester; they are useful as components of printing inks.