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:
Apr. 28, 2009
Filed:
Nov. 20, 2003
Ryosaku Inamura, Kawasaki, JP;
Kazumasa Shimoda, Kawasaki, JP;
Toshio Sugimoto, Kawasaki, JP;
Takuya Uzumaki, Kawasaki, JP;
Ryosaku Inamura, Kawasaki, JP;
Kazumasa Shimoda, Kawasaki, JP;
Toshio Sugimoto, Kawasaki, JP;
Takuya Uzumaki, Kawasaki, JP;
Fujitsu Limted, Kawasaki, JP;
Abstract
A perpendicular magnetic recording medium at least comprises a perpendicular magnetic recording layer and a backing layer backing the perpendicular magnetic recording layer. The backing layer has an in-plane magnetization and is formed of a ferrimagnetic material having a compensation temperature in the vicinity of a recording/reproducing temperature in which reproducing of magnetic information is made from the perpendicular magnetic recording layer. A magnetic storage apparatus for recording and reproducing magnetic information using the perpendicular magnetic recording medium is also disclosed.