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. 08, 2022
Filed:
Jun. 12, 2017
Applicant:
Basf SE, Ludwigshafen am Rhein, DE;
Inventors:
Qing Shi, Shanghai, CN;
Laszlo Szarvas, Hong Kong, CN;
Biyu Peng, Chengdu, CN;
Chunxiao Zhang, Chengdu, CN;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C14C 1/08 (2006.01); C14C 3/06 (2006.01);
U.S. Cl.
CPC ...
C14C 1/08 (2013.01); C14C 3/06 (2013.01);
Abstract
The present invention relates to a process for producing leather in which methanesulfonic acid (MSA) is used in the pickling step at a high pH value, and the use of MSA is to improve the quality of the final leather product as well as to improve the environmental impact of the waste liquor.