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. 02, 2003
Filed:
May. 07, 2001
Applicant:
Inventors:
Kazusuke Yamanaka, Kanagawa, JP;
Tomoo Yamamoto, Hchiohji, JP;
Yuzuru Hosoe, Hino, JP;
Nobuyuki Inaba, Hasuda, JP;
Yasutaro Uesaka, Kokubunji, JP;
Masaaki Futamoto, Kanagawa, JP;
Yoshibumi Matsuda, Odawara, JP;
Kenji Furusawa, Yokohama, JP;
Shinji Narishige, Kanagawa, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 5/64 ;
U.S. Cl.
CPC ...
G11B 5/64 ;
Abstract
A thin film magnetic recording medium including a magnetic layer having a fluctuation field defined as S/X , where S is magnetic viscosity and X is irreversible susceptibility X . The fluctuation field of the magnetic layer is not less than 15 oersteds.