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:
Jul. 12, 2005
Filed:
Sep. 26, 2002
Jun Koujima, Hiroshima-ken, JP;
Teruaki Santoki, Ohtake, JP;
Masaaki Maekawa, Hiroshima, JP;
Takanori Doi, Hatsukaichi, JP;
Jun Koujima, Hiroshima-ken, JP;
Teruaki Santoki, Ohtake, JP;
Masaaki Maekawa, Hiroshima, JP;
Takanori Doi, Hatsukaichi, JP;
Toda Kogyo Corporation, Hiroshima-ken, JP;
Abstract
A perpendicular magnetic recording medium, comprises a substrate; a soft-magnetic layer formed on the substrate; an NaCl-type oxide layer for orientation control formed on the soft-magnetic layer, having a thickness of from more than 0 to less than 10 nm; and a magnetic recording layer formed on the NaCl-type oxide layer for orientation control, comprising a maghemite thin film. Such a perpendicular magnetic recording medium is capable of showing excellent magnetic properties, a high recording resolution and improved surface properties.