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.:

US 7118816 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 10, 2006

Filed:

Apr. 24, 2003
Applicants:

Koukichi Waki, Kanagawa, JP;

Yasushi Hattori, Kanagawa, JP;

Inventors:

Koukichi Waki, Kanagawa, JP;

Yasushi Hattori, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/66 (2006.01); G11B 5/70 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention provides a magnetic recording medium comprising a support and a magnetic layer comprising a CuAu type or CuAu type magnetically hard ordered alloy phase, wherein a center line average roughness of a magnetic layer surface is 0.1 to 5 nm at a cut-off value of 0.25 mm, and a magnetic recording medium comprising a support and a magnetic layer containing, in a nonmagnetic metal oxide matrix, metal nanoparticles having a CuAu type or CuAu type magnetically hard ordered alloy phase.


Find Patent Forward Citations

Waki, Koukichi. (2006). Magnetic recording medium (U.S. Patent No. 7118816). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7118816

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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