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:
Feb. 09, 1999
Filed:
Feb. 16, 1996
Applicant:
Inventors:
Kevin Brown, Middlesex, GB;
Gianfranco Filippo Liberti, Milan, IT;
Sarfraz Ali, Middlesex, GB;
David Thomas Gawne, Buckinghamshire, GB;
Assignee:
Brent International PLC, Buckinghamshire, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ; C01B / ; C01B / ;
U.S. Cl.
CPC ...
148254 ; 423306 ; 423308 ;
Abstract
Disclosed is a composition for the pre-rinsing of a metal surface prior to phosphating, a method for preparing the composition, and a method for using the composition to pre-condition the metal surface. The composition is an aqueous suspension containing a water-insoluble manganese phosphate having the formula Mn.sub.x X.sub.y H.sub.2 (PO.sub.4).sub.4.nH.sub.2 O, in which X is a divalent metal ion other than manganese, x+y is 5 and x is a positive number of from 1 to 5, y is 0, 1, 2, 3 or 4, and n is less than 4.