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:
Oct. 19, 2010
Filed:
Sep. 28, 2005
Applicants:
Joseph D. Pemberton, New Berlin, WI (US);
John P. Jandrists, Chicago, IL (US);
Inventors:
Joseph D. Pemberton, New Berlin, WI (US);
John P. Jandrists, Chicago, IL (US);
Assignee:
Coral Chemical Company, Waukegan, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C 22/42 (2006.01); C23C 22/44 (2006.01); C23C 22/34 (2006.01); C23C 22/50 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention provides a method and composition for coating a ferrous metal surface with a zirconium/vanadium conversion coating which is substantially free of an organic film forming composition and tannins. The method is a low temperature method which contemplates an aqueous conversion coating composition which is low in phosphates and which comprises zirconium, vanadium, fluoride, as well as phosphate ions in a ratio and a concentration effective for providing a conversion-coated ferrous metal surface.