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. 05, 2000
Filed:
Aug. 17, 1998
Applicant:
Inventors:
Linda M Hlivka, Downingtown, PA (US);
Joseph Mihelic, Sparta, NJ (US);
Bruce L Libutti, Teaneck, NJ (US);
Assignee:
Ashland Inc., Dublin, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ; C11D / ; C11D / ; C11D / ;
U.S. Cl.
CPC ...
134 42 ; 510247 ; 510253 ; 510254 ; 510477 ; 510488 ; 510499 ;
Abstract
The invention relates to a composition useful for cleaning metal surfaces immersed in an aqueous system. The composition comprises as a mixture: an organic carboxylic acid; a non chelating amine; a chelating agent; and preferably a sulfur-containing polymer.