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:
Oct. 13, 1998
Filed:
Jul. 16, 1997
Applicant:
Inventors:
Patricia Marie Lesko, Ottsville, PA (US);
James John Hodder, Doylestown, PA (US);
Alvin Michael Maurice, Lansdale, PA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C14C / ;
U.S. Cl.
CPC ...
8 9421 ; 98 9433 ; 98 942 ; 98 9423 ; 98436 ;
Abstract
The present invention is directed to a method of treating tanned leather to improve its dyeing characteristics while still retaining desired grain break and grain strength. The tanned leather is contacted, preferably by immersion, in a float containing a syntan and a desired colorant. The syntan includes a copolymer of a carboxylic acid monomer and a vinyl ester monomer, such as, vinyl acetate. The retanning method of the present invention provides wide process latitude.