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:
Jun. 23, 1998
Filed:
Oct. 04, 1996
Applicant:
Inventors:
Kouichi Masaki, Kanagawa, JP;
Toshihiko Miura, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428323 ; 428328 ; 4286 / ; 4286 / ; 428900 ;
Abstract
A magnetic recording medium is disclosed, which comprises a nonmagnetic support having thereon a magnetic layer containing at least ferromagnetic metal particles, wherein said ferromagnetic metal particles have a coercive force of from 1,700 to 3,000 Oe, an average long axis length of from 30 to 80 nm, an average acicular ratio of from 2.0 to 5.0, and a crystallinity of from 30 to 100%.