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:
Mar. 19, 1996
Filed:
Jun. 24, 1994
Satoru Udagawa, Kawasaki, JP;
Masaki Abe, Kawasaki, JP;
Satoru Ando, Kawasaki, JP;
Yasuhiro Matsuki, Kawasaki, JP;
Toyofumi Watanabe, Kawasaki, JP;
Yukimitsu Shiohara, Kawasaki, JP;
Masaya Morita, Kawasaki, JP;
Akimasa Kido, Kawasaki, JP;
NKK Corporation, Tokyo, JP;
Abstract
A surface treated steel sheet comprises: a steel sheet containing C, Si, Mn, P, S, Ni, Ti, Cu and B; a diffused alloy layer containing Fe, Ni, and P; and a zinc coating layer formed on the diffused alloy layer. A method for producing a surface treated steel sheet comprises the steps of: preparing a steel sheet; coating the steel sheet with a Ni-P coating layer; heat-treating the steel sheet coated with the Ni-P coating layer; and forming a zinc coating layer on the diffused alloy layer.