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:
May. 27, 1980
Filed:
Apr. 13, 1979
Teijin Limited, Osaka, JP;
Abstract
A method for regenerating a spent bleach-fixer solution by electrodialysis using an electrodialysis cell comprising a cathode, an anode and alternating anion exchange membranes and cation exchange membranes arranged therebetween to define a cathode compartment, a plurality of intermediate enionation and deionation compartments with a set of the deionation compartments alternately disposed between a set of the enionation compartments, and an anode compartment; said method comprising filling an electrolyte solution in the cathode compartment, the enionation compartments and anode compartment, and the spent bleach-fixer solution in the deionation compartments, and passing a direct electric current across the cathode and the anode; and an apparatus for use in the aforesaid method.