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. 03, 2009
Filed:
Mar. 14, 2006
Ryosaku Inamura, Kawasaki, JP;
Isatake Kaitsu, Kawasaki, JP;
Takuya Uzumaki, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A magnetic recording medium includes; a base member; an underlayer formed on the base member; a main recording layer formed on the underlayer, and a writing assist layer formed on or under the main recording layer in contact with the main recording layer. The main recording layer has perpendicular magnetic anisotropy with an anisotropic magnetic field of Hand an inclination of a reversal part of a magnetization curve of a. The writing assist layer has an anisotropic magnetic field of Hand an inclination of a reversal part of a magnetization curve of a. The anisotropic magnetic fields Hand Hand the inclinations aand asatisfy H>Hand a>a.