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:
Aug. 17, 2004
Filed:
Jan. 08, 2002
Applicant:
Inventors:
Kyung-jin Lee, Kyungki-do, KR;
Taek-dong Lee, Seoul, KR;
In-seon Lee, Seoul, KR;
Min-sik Hwang, Jeollabuk-do, KR;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/66 ; G11B 5/70 ; H01J 1/00 ;
U.S. Cl.
CPC ...
G11B 5/66 ; G11B 5/70 ; H01J 1/00 ;
Abstract
A perpendicular magnetic recording medium is provided. The perpendicular magnetic recording medium has an underlayer for leading perpendicular orientation of a perpendicular magnetic recording layer, stacked between a substrate and the perpendicular magnetic recording layer, and thickness of the perpendicular magnetic recording layer is controlled within the range of 5-40 nm to have a negative nucleation field.