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. 14, 1988
Filed:
Feb. 20, 1985
Applicant:
Inventor:
Rudolf Schmidt, Worms, DE;
Assignee:
Benckiser-Knapsack GmbH, Ladenburg, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C14C / ;
U.S. Cl.
CPC ...
8 9418 ; 8 9426 ;
Abstract
The present invention concerns retanning agents for mineral tanned leathers. They comprise aqueous solutions of organic polymer complex compounds containing carboxyl groups doped with chromium III. The agents are characterized by high chromium depletion and retanning effects.