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:
May. 09, 1989
Filed:
Oct. 09, 1986
Applicant:
Inventors:
Ulrich Riegel, Frankfurt am Main, DE;
Fritz Engelhardt, Frankfurt am Main, DE;
Kuno Reh, Frankfurt am Main, DE;
Helmut Croon, Frankfurt am Main, DE;
Hermann Becker, Jugesheim, DE;
Werner Lotz, Niedernhausen, DE;
Assignee:
Cassella Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C14C / ;
U.S. Cl.
CPC ...
8 94 / ; 8 9421 ; 8 9424 ; 528 69 ; 528128 ; 528266 ;
Abstract
Hides, skins and pelts are tanned by use of a tanning agent which comprises the reaction product of acetaldehyde, formaldehyde and a formylamino compound.