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:
Nov. 29, 2022
Filed:
Jan. 17, 2018
Nippon Steel Nisshin Co., Ltd., Tokyo, JP;
Masaki Yamamoto, Tokyo, JP;
Tadashi Nakano, Tokyo, JP;
Ichiro Takahashi, Tokyo, JP;
Hiroyuki Nakamizo, Tokyo, JP;
Toshiaki Sato, Tokyo, JP;
Yoshinobu Kurisu, Tokyo, JP;
Yuuki Sakuraba, Tokyo, JP;
Yoshitaka Yukura, Hiroshima, JP;
Tsutomu Ohta, Hiroshima, JP;
Shinichi Kajimoto, Hiroshima, JP;
Noboru Suzuki, Fukuoka, JP;
Masahiko Tsuchiyama, Fukuoka, JP;
Yuusuke Murai, Fukuoka, JP;
NIPPON STEEL NISSHIN CO., LTD., Tokyo, JP;
Abstract
The present invention provides a method for manufacturing more beautiful black coated steel sheets by uniformly blackening the coating layer. Specifically, the present invention provides a method for manufacturing black coated steel sheets, which brings Zn—Al—Mg alloy coated steel sheets () into contact with steam in a closed container (), wherein said closed container () can maintain a predefined internal pressure through variable control of the amount of steam flowing into said closed container () and/or the amount of steam flowing out of said closed container (), and in said closed container () that can maintain said predefined pressure, said Zn—Al—Mg alloy coated steel sheets () have contact with the steam introduced into said closed container ().