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:
Jun. 03, 2003
Filed:
Jan. 29, 2001
Applicant:
Inventor:
Ulrich Reiter, Osnabrück, DE;
Assignee:
KM Europa Metal AG, Osnabruck, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C 1/824 ;
U.S. Cl.
CPC ...
C23C 1/824 ;
Abstract
A method for producing an inner tin film on the surface of plumbing components, such as those made of red brass or yellow brass, for drinking water supply. The lead content on the inner surface of the hollow component parts is first reduced by treatment with an acid-based aqueous reducing solution. For this purpose, chloride-free and sulfate-free, non-oxidizing hydracids may be used. The hollow component parts are subsequently chemically internally tinned.