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. 16, 2010
Filed:
Jan. 22, 2007
Hiroshi Tomiyasu, Shinjuku-ku, JP;
Koichi Shimokawa, Shinjuku-ku, JP;
Hiroshi Tomiyasu, Shinjuku-ku, JP;
Koichi Shimokawa, Shinjuku-ku, JP;
WD Media (Singapore) Pte. Ltd., Singapore, SG;
Abstract
Disclosed is a magnetic disk which has a lubricant layer with excellent heat resistance and high adhesiveness and is free from fly-stiction failure or corrosion failure even at an extremely low flying height of 10 nm or lower. Also disclosed is a magnetic disk which has a lubricant layer with good thermal properties and can exert a stable action over a wide temperature range. The magnetic disk comprises a substrate (), and a magnetic layer (), a carbon-containing protective layer () and a lubricant layer () provided on the substrate (), wherein the lubricant layer () contains a magnetic disk lubricant comprising a compound having a phosphazene ring and two or more hydroxyl and/or carboxyl groups in the molecule.