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:
Dec. 10, 2002
Filed:
Jul. 18, 2001
Applicant:
Inventor:
Didier J. Martin, Givry, FR;
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C 5/31 ; G03C 5/395 ; G03C 7/44 ;
U.S. Cl.
CPC ...
G03C 5/31 ; G03C 5/395 ; G03C 7/44 ;
Abstract
A method to improve the functioning of a membrane of a nanofiltration device provided to filter a solution optimizes the retention rate of the membrane. In the method, the permeate and the retentate are circulated through the nanofiltration membrane for a time before starting to use the membrane. The method is applicable to the treatment of photographic baths.