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. 24, 2015
Filed:
Aug. 08, 2012
Applicant:
Narumi Sato, Matsumoto, JP;
Inventor:
Narumi Sato, Matsumoto, JP;
Assignee:
FUJI ELECTRIC CO., LTD., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/66 (2006.01); G11B 5/72 (2006.01); G11B 5/84 (2006.01);
U.S. Cl.
CPC ...
G11B 5/72 (2013.01); G11B 5/8408 (2013.01);
Abstract
A magnetic recording medium is disclosed which has excellent corrosion resistance, even with a protective layer of thickness 2 nm or less. The magnetic recording medium includes, on a substrate, a magnetic layer and a carbon-based protective layer. The thickness of the carbon-based protective layer is 2 nm or less, and the contact angle of water on a surface of the carbon-based protective layer is 25° or greater and less than 60°.