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. 24, 2010
Filed:
Dec. 24, 2004
Tomoyuki Maeda, Kawasaki, JP;
Soichi Oikawa, Tokyo, JP;
Takeshi Iwasaki, Yokohama, JP;
Futoshi Nakamura, Ichikawa, JP;
Hiroshi Sakai, Ichihara, JP;
Kenji Shimizu, Ichihara, JP;
Akira Sakawaki, Ichihara, JP;
Tomoyuki Maeda, Kawasaki, JP;
Soichi Oikawa, Tokyo, JP;
Takeshi Iwasaki, Yokohama, JP;
Futoshi Nakamura, Ichikawa, JP;
Hiroshi Sakai, Ichihara, JP;
Kenji Shimizu, Ichihara, JP;
Akira Sakawaki, Ichihara, JP;
Showa Denko K.K., Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A magnetic recording mediumwherein a substrate, undercoating layersandformed on the substrate, and a magnetic recording layer, which include the magnetic crystal grain and the grain boundary field which encloses magnetic crystal grains, are included. The grain boundary field includes Ti oxide, and the ratio of the substance amount of the Ti oxide in the magnetic recording layeris 5 mol % or more and 15 mol % or less, and the Ti oxide includes at least TiO and/or TiOs.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile