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:
Mar. 29, 1994
Filed:
Mar. 17, 1993
Applicant:
Inventor:
Charles Garvie Carter, Silver Spring, MD (US);
Assignee:
W. R. Grace & Co. - Conn., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23F / ;
U.S. Cl.
CPC ...
422 15 ; 25238922 ; 25238923 ; 210699 ;
Abstract
A method is disclosed for inhibiting or preventing the formation of scale and corrosion on surfaces in contact with an aqueous system comprising adding to the system an amount effective to inhibit scale formation of a sulfonated organophosphonate compound having the formula: ##STR1## wherein n is an integer from 3 to 10, X is OH or NH.sub.2 ; and water soluble salts thereof.