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:
Jan. 12, 1993
Filed:
Apr. 02, 1992
Applicant:
Inventors:
Herman L Gewanter, Waterford, CT (US);
Ralph D May, Oakdale, CT (US);
Assignee:
Pfizer Inc., New York, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G23F / ;
U.S. Cl.
CPC ...
25238953 ; 25238962 ; 252392 ; 25218828 ; 422 17 ; 422 19 ;
Abstract
There is disclosed a method for removing dissolved oxygen from aqueous systems, for example, boiler water systems for oil injection water or brine. The disclosed method uses a salt of a keto-gluconic acid, or a salt of a stereoisomer of a keto-gluconic acid, as the oxygen scavenger a metal containing compound which controls the rate of oxygen removal.