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. 21, 1980
Filed:
Jul. 11, 1978
Applicant:
Inventors:
Karl Frank, Leverkusen, DE;
Hans-Dieter Block, Cologne, DE;
Assignee:
AGFA-Gevaert, A.G., , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430372 ; 430427 ;
Abstract
A new bath composition for processing photographic materials with at least one silver halide layer is provided in which discolorations caused by Fe III-bleaching agents are prevented by an after-treatment bath comprising phosphoric acid or a phosphonic acid as hereinafter described.