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, 1985
Filed:
Jun. 09, 1981
Applicant:
Inventors:
Philip Brocklebank, Warrington, GB;
John J Bennison, Runcorn, GB;
Assignee:
Dearborn Chemicals Limited, Widnes, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23F / ; C23F / ; C23F / ;
U.S. Cl.
CPC ...
422 14 ; 422 15 ; 422 17 ;
Abstract
Composition and method for inhibiting corrosion in aqueous systems using synergistic combination of an inorganic nitrite and a phosphonate, e.g., 10-20 ppm sodium nitrite plus 0.5-5 ppm hydroxyethylidene diphosphonic acid.