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:
Oct. 11, 2011
Filed:
Aug. 05, 2009
Shinichi Ishibashi, Ichihara, JP;
Migaku Takahashi, Sendai, JP;
Shin Saito, Sendai, JP;
Yuzo Sasaki, Ichihara, JP;
Atsushi Hashimoto, Chiba, JP;
Gohei Kurokawa, Ichihara, JP;
Tomoyuki Maeda, Kawasaki, JP;
Akihiko Takeo, Tokyo, JP;
Shinichi Ishibashi, Ichihara, JP;
Migaku Takahashi, Sendai, JP;
Shin Saito, Sendai, JP;
Yuzo Sasaki, Ichihara, JP;
Atsushi Hashimoto, Chiba, JP;
Gohei Kurokawa, Ichihara, JP;
Tomoyuki Maeda, Kawasaki, JP;
Akihiko Takeo, Tokyo, JP;
Showa Denko K.K., Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Tohoku University, Miyagi-ken, JP;
Abstract
In a perpendicular magnetic recording medium in which at least a soft magnetic underlayer, an orientation control layer, a magnetic recording layer and a protective layer are formed on a non-magnetic substrate in order from the bottom, the orientation control layer has a laminated structure of two or more layers including an intermediate layer and a seed layer which is disposed closer to the non-magnetic substrate than the intermediate layer. The seed layer includes two or more kinds of elements having a face-centered cubic structure, has face-centered cubic (111) plane crystals oriented in a direction perpendicular to a substrate surface, and has a pseudo-hexagonal structure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile