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:
Aug. 10, 2004
Filed:
Nov. 20, 2001
Applicant:
Inventors:
Simon Gerard Hardin, North Fitzroy, AU;
Klaus Werner Wittel, Frankfurt, DE;
Anthony Ewart Hughes, Olinda, AU;
Karen Joy Hammon Nelson, Plympton, AU;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 2/200 ;
U.S. Cl.
CPC ...
C23C 2/200 ;
Abstract
An aqueous acidic solution for forming a rare earth element containing conversion coating on the surface of a metal, said solution being chromate-free and including effective quantities of at least one rare earth element (as herein defined) containing species, an oxidant and at least one accelerator, comprising a metal selected from Groups VA and VIA of the Periodic Table.