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:
Jul. 13, 1993
Filed:
Jul. 26, 1991
Applicant:
Inventors:
Gunther Auerbach, Basel, CH;
Kurt Brenneisen, Grenzach, DE;
Markus Doerr, Hartheim, DE;
Paul Doswald, Munchenstein, CH;
Markus Gisler, Rheinfelden, CH;
Werner Koch, Oberwil, CH;
Helmut A Moser, Oberwil, CH;
Roland Wald, Huningue, FR;
Assignee:
Sandoz Ltd., Basel, CH;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B / ; D06P / ;
U.S. Cl.
CPC ...
534634 ; 534618 ; 534623 ; 534624 ; 534633 ; 540126 ; 544 56 ; 544 581 ; 544 60 ; 544 75 ; 544209 ; 8549 ;
Abstract
Metal-free compounds of the formula ##STR1## a 1:1 or 1:2 metal complex of a metallizable compound of said formula or a salt of a metal-free compound of said formula or of a 1:1 or 1:2 metal complex thereof each cation of which is independently a non-chromophoric cation, or a mixture, thereof, wherein