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:
Sep. 06, 1994
Filed:
Jan. 06, 1993
Applicant:
Inventors:
Charles G Carter, Silver Spring, MD (US);
Lai-Duien G Fan, Lake Zurich, IL (US);
Joseph C Fan, Lake Zurich, IL (US);
Robert P Kreh, Jessup, MD (US);
Vladimir Jovancicevic, Columbia, MD (US);
Assignee:
W. R. Grace & Co.-Conn., New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23F / ;
U.S. Cl.
CPC ...
252396 ; 252180 ; 25238961 ; 25238962 ; 210698 ; 422 17 ;
Abstract
A method for inhibiting corrosion of metals in contact with an aqueous solution comprising adding to the system a corrosion inhibiting amount of one or more polytartaric acid compounds having the generalized formula: ##STR1## wherein each R is independently selected from the group consisting of H and C.sub.1 to C.sub.4 alkyl, n is less than 4 and the average molecular weight of the mixture corresponds to an average n in the range 1.2 to 3.