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:
Jul. 20, 1999
Filed:
Sep. 24, 1997
Applicant:
Inventor:
Philippe Strauel, Givry, FR;
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210724 ; 210725 ; 210726 ; 210727 ; 210912 ; 423140 ;
Abstract
The present invention concerns the treatment of an aqueous effluent and consists of ridding it of the iron which it contains, notably in the form of a complex. The method according to the invention consists of treating this effluent by successively a silicate, and a magnesium and aluminium hydroxycarbonate, then decanting and filtering. The method according to the invention is particularly useful in the treatment of photographic effluents.