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:
Jan. 05, 1988
Filed:
Jan. 30, 1986
Applicant:
Inventor:
Michel Dien, Rixheim, FR;
Assignee:
Sandoz Ltd., Basel, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D06P / ;
U.S. Cl.
CPC ...
8436 ;
Abstract
Tanned leather is penetration-dyed from aqueous medium with hydrospluble sulpho group-containing sulphur dyes in the presence of dye-substantive uptake assistants and may be used as a substrate for further coloration processes, mainly dyeings and printings, in particular with anionic or basic dyes; in a variation of the process for overdyeing, in particular of thin leathers, the penetration-dyeing may also be carried out in the absence of the dye-substantive uptake assistant.