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. 26, 1991
Filed:
Aug. 05, 1988
Applicant:
Inventors:
Michel Dien, Rixheim, FR;
Willi Egli, Reinach, CH;
Assignee:
Sandoz Ltd., Basel, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D06P / ;
U.S. Cl.
CPC ...
8437 ; 8436 ;
Abstract
A process for the dyeing or printing of leather with anionic metal complex dyes wherein the metal complex dyes are metal complexes of metallizable monoazo dyes or metallizable monoazomethine dyes or both metallizable monoazo and monoazo methine dyes and before the application of the dye or after the application of the dye or both before and after the application of the dye the leather is treated with a product (P) or a mixture of products (P) or an acid addition product thereof, product (P) being a polymer obtainable by reaction of