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. 23, 2008
Filed:
Feb. 02, 2005
Reiko Murao, Higashine, JP;
Masaya Suzuki, Kawasaki, JP;
Reiko Murao, Higashine, JP;
Masaya Suzuki, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A magnetic recording medium including a substrate, a first underlayer provided on the substrate, a first magnetic layer provided on the first underlayer, a nonmagnetic coupling layer provided on the first magnetic layer, and a second magnetic layer provided on the nonmagnetic coupling layer. The first and second magnetic layers are exchange-coupled, and have magnetizations that are mutually antiparallel in a state where no external field is applied to the magnetic recording medium. Additionally, the first underlayer is made of Cr or a Cr alloy each having a bcc crystal structure and including nitrogen, and further wherein the first underlayer has a thickness in a range of 0.5 nm to 6.0 nm.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile