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:
Feb. 27, 1996
Filed:
Feb. 27, 1994
Applicant:
Inventors:
Reinhard Pedrazzi, Allschwil, CH;
Ulrich Zirngibl, Oberwil, CH;
Assignee:
Sandoz Ltd., Basel, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B / ; C09B / ; D06P / ; D06P / ;
U.S. Cl.
CPC ...
534631 ; 534691 ; 8506 ; 8549 ; 8681 ; 8918 ; 8919 ; 106 / ; 252585 ;
Abstract
The disazo dyestuffs and mixtures thereof, of the general formula I ##STR1## wherein the symbols R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and M possess the significances given in claim 1, are eminently suitable for dyeing or printing organic substrates containing hydroxyl, thiol or amido groups, especially cotton or paper.