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:
Dec. 28, 2004
Filed:
Aug. 29, 2003
Applicant:
Inventors:
Hiroaki Doushita, Kanagawa, JP;
Takeshi Harasawa, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/714 ;
U.S. Cl.
CPC ...
G11B 5/714 ;
Abstract
A magnetic recording medium comprising: a support; and a magnetic layer comprising ferromagnetic metal powder and a binder, wherein the ferromagnetic metal powder is acicular composite magnetic particle powder having an average long axis length of from 20 to 50 nm, and at least a part of a surface of the particle powder is covered with carbon black.