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:
Aug. 18, 2015
Filed:
Aug. 31, 2010
Yasuhide Morimoto, Tokyo, JP;
Nobuhiro Fujita, Tokyo, JP;
Akihiro Miyasaka, Tokyo, JP;
Kazuhiko Honda, Tokyo, JP;
Masafumi Azuma, Tokyo, JP;
Noriyuki Suzuki, Tokyo, JP;
Toshiki Nonaka, Tokyo, JP;
Yasuhide Morimoto, Tokyo, JP;
Nobuhiro Fujita, Tokyo, JP;
Akihiro Miyasaka, Tokyo, JP;
Kazuhiko Honda, Tokyo, JP;
Masafumi Azuma, Tokyo, JP;
Noriyuki Suzuki, Tokyo, JP;
Toshiki Nonaka, Tokyo, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
Provided is a galvanized steel sheet having a tensile strength of 770 MPa or more including a steel sheet portion, and a plated layer formed on the surface of the steel sheet portion, in which the plated layer is a galvanized plated layer or an galvannealed plated layer, the steel sheet portion has a soft layer that directly adjoins the interface with the plated layer and an inside layer that is other than the soft layer, the thickness D of soft layer is 0.001% to 5% of thickness t of the steel sheet portion, and, when the hardness of the soft layer measured by nano-indentation method is indicated by H1, and the representative hardness of the steel sheet portion measured by the nano-indentation method is indicated by Ha in cross section that goes along the thickness direction of the steel sheet portion, H1 is 5% to 75% of Ha.