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. 19, 1996
Filed:
May. 19, 1994
Applicant:
Inventors:
Richard R Horn, Fairport, NY (US);
Christine K Gaskell, Rochester, NY (US);
Susan R Krauss, Pittsford, NY (US);
Michael D Purol, Rochester, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210668 ; 210669 ; 210684 ; 210694 ; 210912 ; 210917 ;
Abstract
A method of treating photoprocessing wash water, comprising in sequence, the steps of: A) contacting the wash water with an acrylic anion exchange resin to remove silver thiosulfate complex in the water; and B) contacting the water from step A) with an oxidizing agent that converts thiosulfate ions to sulfate ions. C) recirculating continuously through the photoprocessing wash tank and steps A) and B).