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. 01, 1989
Filed:
May. 13, 1987
Applicant:
Inventors:
Assignee:
Nippon Steel Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428621 ; 428632 ; 428658 ; 428659 ; 428684 ;
Abstract
In the electroplated steel sheets for automobile use, the chipping resistance, water-resistant adhesion, unpainted corrosion resistance, post-painted corrosion resistance, and resistance to secular exposure are improved by superimposing a chemical conversion layer between electroplated layers of zinc and iron, nickel, cobalt, or alloys thereof.