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. 22, 2013
Filed:
Nov. 27, 2006
Applicant:
Leonardus Strijbos, Neuenburg am Rhein, DE;
Inventor:
Leonardus Strijbos, Neuenburg am Rhein, DE;
Assignee:
TFL Ledertechnik GmbH, Weil am Rhein, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C14C 11/00 (2006.01); C14C 3/06 (2006.01); C14C 3/28 (2006.01); C14C 3/32 (2006.01); C14C 3/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
D-Isoascorbic acid or one of its salts, as such or as a constituent of a liquid or solid formulation, is an effective agent for reducing the amount of Cr(VI) compounds in leathers tanned with Cr(III) salts by treatment of the leather in an aqueous liquor after tanning or finishing or of a commodity article with an aqueous solution.