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. 24, 2022
Filed:
Jun. 05, 2018
Jfe Steel Corporation, Tokyo, JP;
Yusuke Nakagawa, Tokyo, JP;
Takeshi Suzuki, Tokyo, JP;
Mikito Suto, Tokyo, JP;
Katsumi Kojima, Tokyo, JP;
Yuya Baba, Tokyo, JP;
Hanyou Sou, Tokyo, JP;
Yoichiro Yamanaka, Tokyo, JP;
Shunsuke Tokui, Tokyo, JP;
JFE STEEL CORPORATION, Tokyo, JP;
Abstract
A steel sheet for cans which exhibits excellent weldability; and a production method therefor include a steel sheet for cans with the surface of a steel sheet in order from the steel sheet side, a chromium metal layer and a hydrous chromium oxide layer. The deposited amount of the chromium metal layer is 65-200 mg/m. The deposited amount of the hydrous chromium oxide layer in terms of chromium is 3-30 mg/m. The chromium metal layer includes: a base part having a thickness of 7.0 nm or higher; and granular protrusions which are on the base part, have a maximum grain size of 100 nm or lower, and have a number density per unit area of at least 200 per μm.