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.

Date of Patent:
Aug. 30, 2005

Filed:

Mar. 25, 2003
Applicants:

Satoru Hayakawa, Kanagawa, JP;

Yuichiro Murayama, Kanagawa, JP;

Inventors:

Satoru Hayakawa, Kanagawa, JP;

Yuichiro Murayama, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B005/733 ;
U.S. Cl.
CPC ...
Abstract

A magnetic recording medium comprising: a support; a subbing layer comprising a radiation-curable resin; a nonmagnetic layer comprising a nonmagnetic powder and a binder; and at least one magnetic layer comprising a ferromagnetic powder and a binder, in this order, wherein the subbing layer has a thickness of from 0.05 to 1.0 μm, and the nonmagnetic powder has an average acicular ratio of 8 or more and has a form of a raft.


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