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. 03, 2015
Filed:
Sep. 28, 2011
Applicants:
Katsuya Hoshino, Chiyoda-ku, JP;
Shinji Ootsuka, Chiyoda-ku, JP;
Takayoshi Yano, Chiyoda-ku, JP;
Inventors:
Assignee:
JFE Steel Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D 9/10 (2006.01);
U.S. Cl.
CPC ...
C25D 9/10 (2013.01); Y10T 428/265 (2015.01);
Abstract
In order to obtain a cold rolled steel sheet having excellent press formability, a cold rolled steel sheet has an inorganic film containing a crystalline layered material having an average film thickness of 10 nm to 2000 nm on a surface thereof. The crystalline layered material preferably is, for example, a layered double hydroxide represented by [MM(OH)][A].zHO, where: Mis one or more of Mg, Ca, Fe, Ni, and Zn; Mis one or more of Al, Fe, and Cr; and Ais one or more of OH, CO, Cl, and (SO).