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:
Oct. 30, 2007
Filed:
Nov. 22, 2004
Applicant:
Yuka Aoyagi, Tachikawa, JP;
Inventor:
Yuka Aoyagi, Tachikawa, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/012 (2006.01); G11B 5/82 (2006.01);
U.S. Cl.
CPC ...
Abstract
A perpendicular recording magnetic disk apparatus has a perpendicular two-layered medium including a pinning layer, a soft underlayer and a perpendicular recording layer, and a write head including a main pole, a return yoke and an exciting coil. In this apparatus, a magnetization recoverable magnetic field Hby which the pinning layer and the soft underlayer ensure a magnetization recovery ratio of 1 is larger than a magnetic field applied by the write head to the pinning layer.
Quick Actions:
Aoyagi, Yuka. (2007). Perpendicular recording magnetic disk apparatus (U.S. Patent No. 7289293). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7289293
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile