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:
Jul. 19, 1994
Filed:
Apr. 22, 1993
Applicant:
Inventors:
Takenori Nakayama, Kobe, JP;
Toyohiko Konno, Stanford, CA (US);
Assignee:
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428627 ; 428632 ; 428635 ; 428650 ; 428651 ; 428469 ; 428471 ; 428472 ; 428925 ; 428926 ;
Abstract
A corrosion resistant Al or Al alloy material on the surface of which multi-layer deposits for improved corrosion resistance. The deposits are obtained by laminating more than five layers of unit periodic layers with a thickness of 100 .ANG. or less in which two, or three or more layers of unit deposits, comprised of specific elements, are laminated. Such multi-layer structure can prevent water, chloride and other corrosion accelerating substances from passing through the deposits and reaching the surface of the base material, thus effectively preventing the corrosion of Al or Al alloy.