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:
Apr. 29, 2003
Filed:
Feb. 11, 2002
Applicant:
Inventors:
Olivier J. Poncelet, Chalon sur Saone, FR;
Jacques Roussilhe, Virey le Grand, FR;
Danielle M. Wettling, Chatenoy le Royal, FR;
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/42 ;
U.S. Cl.
CPC ...
C02F 1/42 ;
Abstract
This invention concerns the developing of silver halide photographic products. Silver-laden slurries accumulate in developing baths. It is possible to eliminate these silver-laden slurries by placing the developing baths in contact with aluminosilicate polymers modified by sulfur groups. For example, a tank is fitted with a loop to feed the bath through a cartridge 16 that contains the elements that are permeable to the developing bath, and which contain the aluminosilicate polymer modified by the sulfur groups.