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. 02, 1999
Filed:
Sep. 30, 1997
Applicant:
Inventors:
Thomas Hubsch, Koln, DE;
Ralf Weimann, Leverkusen, DE;
Angelika Scholkmann, Leverkusen, DE;
Erika Spriewald, Leverkusen, DE;
Assignee:
Agfa Gevaert AG, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430393 ; 430460 ;
Abstract
A bleach/fixing bath, characterized in that it contains, apart from the active and auxiliary substances necessary for bleach/fixing, a phosphonocarboxylic acid having at least two carboxylic acid groups per molecule, is lower in odor and more stable than conventional bleaching baths.