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:
May. 28, 2019
Filed:
Oct. 08, 2015
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Yoshiaki Tani, Kitakyushu, JP;
Shigeru Hirano, Kitakyushu, JP;
Akira Tachiki, Kitakyushu, JP;
Morio Yanagihara, Hubei, CN;
Makoto Kawabata, Chonburi, TH;
Hirokazu Yokoya, Onga-gun, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
A chemical treatment steel sheet includes a steel sheet; a Fe—Sn alloy layer which is formed on at least one surface of the steel sheet; an Sn layer which is formed on the Fe—Sn alloy layer; and a chemical treatment layer that is formed on the Sn layer, and contains a 0.01 to 0.1 mg/mof Zr compounds in terms of an amount of metal Zr and 0.01 to 5 mg/mof phosphate compounds in terms of an amount of P. The total Sn content of the Fe—Sn alloy layer and the Sn layer is 0.1 to 15 g/mof Sn in terms of the amount of metal Sn.