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 7978438 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 12, 2011

Filed:

Jul. 09, 2007
Applicants:

Naoki Ohta, Tokyo, JP;

Kosuke Tanaka, Tokyo, JP;

Takayasu Kanaya, Tokyo, JP;

Kazuki Sato, Tokyo, JP;

Yasufumi Uno, Tokyo, JP;

Tetsuya Kuwashima, Tokyo, JP;

Inventors:

Naoki Ohta, Tokyo, JP;

Kosuke Tanaka, Tokyo, JP;

Takayasu Kanaya, Tokyo, JP;

Kazuki Sato, Tokyo, JP;

Yasufumi Uno, Tokyo, JP;

Tetsuya Kuwashima, Tokyo, JP;

Assignee:

TDK Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/39 (2006.01);
U.S. Cl.
CPC ...
Abstract

A thin-film magnetic head provided with at least one MR read head element includes a lower shield layer, an upper shield layer, and an MR layer formed between the lower shield layer and the upper shield layer. A profile of the upper shield layer, appeared at an ABS, has obtuse or rounded upper corners at end edges of the upper shield layer along a track-width direction.


Find Patent Forward Citations

Ohta, Naoki. (2011). Thin-film magnetic head with shield layer profile having obtuse or rounded corners, magnetic head assembly, magnetic disk drive apparatus and manufacturing method of thin-film magnetic head (U.S. Patent No. 7978438). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7978438

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

Loading…