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. 20, 1989
Filed:
Oct. 13, 1988
Applicant:
Inventors:
Richard N Steinbicker, Allentown, PA (US);
Herbert E Townsend, Center Valley, PA (US);
Yung-Herng Yau, Allentown, PA (US);
Assignee:
Bethlehem Steel Corporation, Bethlehem, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
204 28 ;
Abstract
The invention relates to an improvement in a process for electrodepositing a protective coating of zinc or a zinc alloy on steel or other metal substrates in which the process utilizes a metal conductor roll or conductor roll with metal sleeves and contains a rinsing bath with a mineral acid solution associated with the roll, the improvement comprises providing at least 50 ppm of hydrogen peroxide or a peroxydisulfate compound in the mineral acid bath.