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. 27, 1995
Filed:
Jan. 22, 1993
Applicant:
Inventors:
Alain Lauton, Saint-Louis, FR;
Markus Hess, Steinen-Hofen, DE;
Gunter Streicher, Weil am Rhein, DE;
Alois Puntener, Rheinfelden, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C14C / ;
U.S. Cl.
CPC ...
8 9418 ; 8 9415 ; 8 9417 ; 252-857 ;
Abstract
A process for pickling raw hides, which comprises treating a delimed raw hide with an aqueous liquor that comprises a reaction product of phenol and a sulfonating agent, the molar ratio of (phenol):(SO.sub.3) being (1):(1.1-2.2), and which is free from neutral salts. The raw hides obtainable by the novel process are suitable for further processing by all conventional tanning methods.