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. 25, 1989
Filed:
Nov. 30, 1988
Applicant:
Inventor:
Ralph D May, Oakdale, CT (US);
Assignee:
Pfizer Inc., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C02F / ; C23F / ;
U.S. Cl.
CPC ...
210750 ; 210757 ; 210766 ; 422 17 ; 252178 ;
Abstract
When an aqueous system containing dissolved oxygen and erythorbate or ascorbate is passed through an activated carbon bed, the oxygen is removed at ambient temperatures. This method of oxygen removal finds practical application in the removal of oxygen from boiler condensate, low temperature boiler feedwater and oil well injection water or brine.