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:
Sep. 16, 2003
Filed:
Feb. 13, 2001
Takashi Toyoguchi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
There is disclosed a magnetic recording medium in which reduced magnetic spacing and secured contact sliding durability are compatible with each other, and the magnetic recording medium includes: a disk-like substrate an underlayer formed on the substrate; a magnetic layer formed on the underlayer, including a ferromagnetic material, and formed by introducing a predetermined element to modify a surface layer portion; and a protective layer formed in at least one area of an outer peripheral area and an inner peripheral area excluding a middle area held between the outer peripheral area and the inner peripheral area of a disk on the modified surface layer portion of the magnetic layer, for protecting the magnetic layer.