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:
Oct. 20, 2026

Filed:

Dec. 13, 2024
Applicants:

Kabushiki Kaisha Toshiba, Tokyo, JP;

Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;

Inventors:

Yuji Nakagawa, Kawasaki Kanagawa, JP;

Masayuki Takagishi, Tokyo, JP;

Naoyuki Narita, Funabashi Chiba, JP;

Tomoyuki Maeda, Kawasaki Kanagawa, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/147 (2006.01); G11B 5/02 (2006.01);
U.S. Cl.
CPC ...
G11B 5/147 (2013.01); G11B 5/02 (2013.01); G11B 2220/2516 (2013.01);
Abstract

According to one embodiment, a magnetic head includes a first magnetic pole, a second magnetic pole, and a magnetic element. The magnetic element is provided between the first magnetic pole and the second magnetic pole in a first direction from the first magnetic pole to the second magnetic pole. The magnetic element includes a first magnetic layer provided between the first magnetic pole and the second magnetic pole, a second magnetic layer provided between the first magnetic layer and the second magnetic pole, a third magnetic layer provided between the second magnetic layer and the second magnetic pole, and a fourth magnetic layer provided between the third magnetic layer and the second magnetic pole. The first magnetic layer includes a first face facing the first magnetic pole. The fourth magnetic layer includes a second face facing the second magnetic pole.


Find Patent Forward Citations

Nakagawa, Yuji. (2026). Magnetic head having magnetic layers of varying thickness and magnetic recording device (U.S. Patent No. 12770645). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12770645

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

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