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:
Nov. 20, 1990
Filed:
Aug. 22, 1988
Applicant:
Inventors:
Norbert Munch, Kelkheim, DE;
Lothar Schlosser, Frankfurt am Main, DE;
Gustav Hudec, Schwalbach am Taunus, DE;
Assignee:
Hoecsht Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; B05D / ;
U.S. Cl.
CPC ...
427421 ; 427389 ; 4273934 ; 4274301 ; 428421 ; 428473 ;
Abstract
The leather is treated with a resin, quaternary ammonium compound, amine or polymer before the impregnation with the fluoro chemicals. With these auxiliaries, a uniform effectiveness of the fluoro chemicals which act on the surface is achieved, regardless of the procedure or the chemicals previously introduced into the leather. These auxiliaries can optionally also be applied to the leather together with the fluoro chemicals.