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:
Apr. 26, 2016
Filed:
Sep. 27, 2011
Katsuya Hoshino, Chiyoda-ku, JP;
Shinji Ootsuka, Chiyoda-ku, JP;
Takayoshi Yano, Chiyoda-ku, JP;
Tatsuya Miyoshi, Chiyoda-ku, JP;
Katsuya Hoshino, Chiyoda-ku, JP;
Shinji Ootsuka, Chiyoda-ku, JP;
Takayoshi Yano, Chiyoda-ku, JP;
Tatsuya Miyoshi, Chiyoda-ku, JP;
JFE Steel corporation, Tokyo, JP;
Abstract
In order to obtain a cold rolled steel sheet having excellent press formability, a cold rolled steel sheet has, on a surface thereof, an organic-inorganic composite film containing: an organic resin; and a crystalline layered material. The organic-inorganic composite film has an average film thickness of 0.10 to 2.0 μm and contains 0.5 part or more by weight of the crystalline layered material as a solid with respect to 100 parts by weight of a solid of the organic resin. 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).