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:
Mar. 29, 1977
Filed:
Apr. 17, 1972
Applicant:
Inventors:
Assignee:
AGFA-Gevaert, A.G., Leverkusen, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C / ;
U.S. Cl.
CPC ...
204109 ; 96 6 / ;
Abstract
Photographic bleach fix baths are desilvered by electrolysis in a cell in which the cathode and anode chambers are separated by a diaphragm, with the exclusion of air, and the bleach fix bath is removed from the cell before the potential is switched off. For increasing the current yield the bleaching agent can be reduced prior to electrolysis for example by the addition of sodium dithionite.